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How to choose night scene lighting LED landscape lights?     Night scene lighting design should consider multiple directions, such as the brightness and color of lighting design, lighting layout, lighting methods, etc., and constantly meet lighting needs and require the artistic effect of lighting. How to choose night scene lighting LED landscape lights? Then these factors should also be taken into account in the selection of LED landscape lights.   In lighting design, night scene lighting applications are divided into monochrome and color, with high brightness and low chroma. In terms of color matching, sometimes colorful lights are needed to render the atmosphere, and sometimes monochrome lights are needed to reflect the characteristics. Night scene lighting emphasizes the visual effects of intimacy, luxury, simplicity and generosity through the change of colors, which is pleasing to the eye, showing different night scene atmospheres and making the lighting colors richer.   According to the shape and material of the illuminated surface, choose the appropriate light projection form and direction. For high-rise buildings, the light source is projected from bottom to top, and the projection direction can show moderate shadows and three-dimensional layering. For rougher facades, the light has good diffusion, so the projection angle can be larger and narrow beam light can be used. For smooth surfaces, try to make the projection direction perpendicular to the surface and use diffuse light. If there is a glass curtain wall, in order to avoid the "black hole" effect, the internal light transmission should be used. The characteristics of lighting are highlighted by these details, and they need to be considered comprehensively in the design of night landscape lighting.   In addition, the arrangement of lights is divided into key points and secondary points. Usually the main light is used to illuminate the key parts of things, such as important three-dimensional signs, signs, architectural features, etc. Auxiliary light is used for other or background parts. Let the entire night scene lighting have a sense of hierarchy. The appearance of landscape lights should also be beautiful. For example, those that emphasize the outline of building lighting often use linear lights such as LED wall washers or LED line lights, LED guardrail tubes to outline; while floodlighting will tend to LED projection lights, LED floodlights and other lamps; and some lighting that combines points, lines and surfaces will also need to use LED point light sources, etc.   COMI LIGHTING LIMITED is a professional manufacturer of outdoor lighting fixtures. Its products mainly provide outdoor lighting for scenic spots, real estate, buildings, municipal administration, parks, etc. and create high-quality outdoor lighting projects. Its products mainly include landscape lights, street lights, garden lights, underwater lights, inground lights, underground lights, bollard lights, column lights, floodlights, wall lights, neon light strips, wall washers, etc. Over the years, with excellent product performance and perfect pre-sales, in-sales and after-sales services, its products have received unanimous praise from users in customers and markets around the world.

As an important part of the outdoor landscape, landscape lighting is an effective means of displaying lighting concepts. Scientific and reasonable outdoor landscape lighting projects are of great significance for improving the taste and external image of the landscape and improving the quality of life of the owners. Today Huimeixing Lighting will introduce to you several common landscape lighting fixtures.   1. Garden lights Garden lights are mainly used in some public places such as urban roads and residential roads. Garden lights can significantly improve the living environment and improve the quality of life of residents. During the day, courtyard lamps embellish the urban scenery; at night, courtyard lamps can not only provide necessary lighting and convenience for life, but also highlight the highlights of the city and interpret a bright style. Height 2, between 5-5 meters.   2. Landscape lights Viewing lights are an indispensable part of our modern life. They not only have high ornamental value, but also emphasize the coordination and unity of the landscape of artistic lights with the history and culture of the scenic spot and the surrounding environment.   3. Lawn lights Lawn lights are used as lighting facilities around lawns in parks and other places. With their unique design and soft lighting, they add safety and beauty to urban green space landscapes. They are easy to install and highly decorative. They can be used in parks and garden villas. The surrounding lawns, pedestrian streets, and parking lots are also available. 4. Underground lights Underground lights are widely used in landscape lighting. Landscape structures, small items, plants, and hard pavements can all be illuminated with underground lights. When the color temperature of underground lights is controlled between 2000-6500K, it will not affect the growth of plants. It is advisable to choose underground lights with chamfers. After the installation is completed, use glass glue to seal them. 5. Spike Lights Shrub lighting areas generally use ground lamps for lighting. When selecting lamps, the color of the light should be consistent with the plants, the base of the lamp needs to be fixed with concrete, and the brightness of the light needs to be adjusted arbitrarily during use.   6. Wall lamps Wall lamps are mainly used for wall and cylinder lighting and are a supplement to functional lighting. Lamps should use anti-glare translucent covers and be hot-dip galvanized on the surface. At the same time, the stainless steel screws used on the lamps should also be painted in a color that matches the surface of the lamps as much as possible.   7. Underwater lights Underwater lamps are mainly used for underwater lamp bodies. They have good waterproof properties and can only use low-voltage current and be used in conjunction with fountains.   8. Floodlights Floodlights can also be called spotlights. Generally, they can be aimed in any direction and have a structure that is not affected by climate conditions. Almost all large-area lighting fixtures used outdoors can be regarded as floodlights.

COMI LIGHTING is proud to introduce its latest innovation in outdoor garden lighting and customizable LED lights: ECLIPSE-T. Our collection offers you a versatile lighting solution that seamlessly combines style and functionality.   Portable Table Lamp: ECLIPSE-T is a detachable and portable table lamp that enhances the atmosphere with a stylish and compact design. The lamp has excellent battery life and can work for up to 8 hours at maximum brightness on a single charge.   Easy Touch Control System: ECLIPSE-T is simple first. It is equipped with an intuitive touch button located on the top, making control a breeze. Turn the light on or off with a single touch and fine-tune the brightness 5%~100% to suit your mood and needs.   Versatile Lighting: ECLIPSE-T's optical design proves its versatility. It provides a wide range of illumination, ensuring that your space is bathed in the perfect lighting atmosphere, whether it is an outdoor party or a cozy indoor night.   Multiple body finish colors to choose from: ECLIPSE-T is available in the following body finish colors to meet the needs of different scenarios.     Weather Resistant: IP65 rated, this light is made for both indoor and outdoor use, weatherproof and ready to illuminate your garden, patio or any space.     A New Dawn: ECLIPSE-T is more than just a light. It elevates your landscape lighting ambience to unprecedented heights, making ordinary spaces extraordinary.   More Than Outdoor: While ECLIPSE-T excels in outdoor garden lighting, it is not limited by the scene. This portable table lamp is equally suitable for your indoor space, becoming a versatile addition to your table lamp collection.   Contact us and explore the future of lighting with ECLIPSE-T, where portability meets power, style meets substance, and illuminates your world in new ways.

Why the underground lamp with a rated IP67 waterproof level is still leaking? ​   Many of us may wonder that the rated IP67 outdoor underground lights are with water or moisture infiltrating into the internal of the lighting fixture, even though these IP67 LED in-ground luminaires are with IP test reports issued by the Third-party certification bodies which prove these luminaires are passed IP67 tested and IP67 waterproof level. And some of these lights are world well-known international brands which are still leaks or with moisture Attached to the inner of glass cover of underground lights.   Why the underground lights with a rated IP67 waterproof level is still infiltrated with water or vapor?   Before having the answer, it is better to understand and learn what IP67 meanings. IP67 means the ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 m of submersion). For more information about ingress protection, please view this link>> What is IP code and IK Code?     The reasons for the water leakage or moisture problem of underground lights are main 4 aspects: 1. Unreasonable design 2. Defects in materials 3. Defects in workmanship 4. Improper installation and operation     1. Unreasonable Design For example, some outdoor underground lamps are sealed with glue to prevent the water from seeping in. These lamps sealed with glue meet the waterproof IP grade indeed when they finished and tested in the factory, or even still working excellent in Third-party certification bodies or lab.   However, the glue will start to get age and turn yellow after about a period of time (around 6 months) of use in an outdoor harsh environment, and the vapor or water will infiltrate to the inner of lamp housing. Therefore, glue sealing waterproofing is unreliable or not enough, the structural waterproofing for outdoor lighting is the kingly way for underground lights, or it is better adopts both structural waterproofing and glue sealing waterproofing technology, especially for IP68 LED underwater lights.   The front cover of some underground lights ere not be pressed firmly or properply, and the manufacturer did not fix the front cover and housing firmly by enough screws. It should be known that LED buried lights are often in an environment immersed by water, and if the front cover is not fixed on lamp body tightly and properly, it is easy to lead to the water or vapor seep into the internal of the underground lighting fixtures via the gaps.   There are only 2 or 3 screws for the front cover for such a large size lamp, and the distance between the screws is far. Do you think it is pressed and fixed tightly?   If the cover of the lamp is not pressed and fixed firmly, there may be gaps, and it is hard to be waterproof even if it is filled and sealed with glue.       The lamp of an international brand in the picture below has no glue sealing inside. Let's check how many screws are used on it? 10 pcs screws.   Several of the lamps mentioned above are not easy to pass the IP67 test. And even if it passes the IP67 grade test, it does not mean there will be no risk of water leakage. Structural design defects in lamps can also lead to water leakage.     Some manufacturers perform a soak-in water test for their underground lamps under certain temperature conditions, BUT there is a risk of failure if the test time is too short (such as 5~6 hours) and considered their lamps passed the IP67 testing. But the fact is, the environment of outdoor lamps is complex in the actual working process than the simple testing.   When the fixture is turned on or working under the scorching sun, the inside temperature will increase as the operating time goes. Conversely when the lamp stops working or when it is raining or snow, the temperature will slowly drop. This phenomenon will cause “The Siphon effect”. Thermal expansion and contraction make the inside and outside air pressure differences. The vapor will infiltrate to the housing through the wire entry as soon as the internal air pressure is smaller than the external.   This is caused by the unreasonable structure design of the lamps or improper operation for the connection for the lamp, which leads to the substandard durability of the lamps.       2. Defects in materials   Defects in the material of the luminaire may cause the luminaire to leak.   This is related to the key waterproof materials of the lamps, such as, waterproof nuts, sealants, silicon rings, etc., which often perform well when they are first installed, but their durability is not enough after a long time. The Poor quality silicone rings will get age in two months. And the outdoor underground light is often exposed to the sun, the ring will crack and water will go into the internal of the housing via the gaps. And lead to premature failure for the outdoor underground light which is not reaching the designed life as expectation.     Even if the silicone ring is not aged, if the silicone strip is not selected properly, and if the selected silicone ring for underground lamp is not an inorganic material but an organic material, It may be acted and decomposed by mildew which the underground light is result in leaking water.   Therefore, the correct selection and high quality of materials is also very important for outdoor LED underground lights.     3. Defects in workmanship For example, the front cover or the bottom cover or other cover for the underground light must be very dense and fixed firmly by screws when the lamp is assembled. Each screw has its fixed torque, if screws are driven too tight, the silicone ring will be crushed, if the screws are driven too loose, the silicone ring is not tight enough. That is to say there will be a fixed torque for the screws. Companies with quality assurance have designed the torque for screws, which can be in place in a good position with just a hit of the electric drill. Other companies without design and conditions to design the torque, just screwed it casually during assembly, it’s hard to avoid water leakage issues.   Well, what if it is a well-known international brand, the lighting design is reasonable, and the materials are good quality, does the IP67 underground lamp will not with the leaking water issue?   The answer is NO!   If the in-ground lamp you use is from a famous supplier or qualified suppliers, but it still gets water leakage, the only possibility is improper installation methods.     4. Improper installation and operation ① Installation ground surface is uneven The general possibility improper operation is that the surface of ground is not on the same level of the front cover of the underground light. The Install ground is uneven, and there are often pressures from pedestrians or cars. Therefore, the position of the pressed rubber ring will lose its elasticity due to excessive pressure-and then it will lead to the lamp leak water or vapor issue?     ②"Short-term waterproof" If the drainage is not handled properly, the underground will leak if they are immersed in water for a long time. The IP67 of the recessed underground light represents short-term waterproofing only. For long time waterproof requirements and submersed lamp into water for a long time, this kind of lamp should be IP68 underwater light required.   ▲ There must be a large layer of space under the lamp for filling with gravel, and there must be a drainage pipe at the bottom so that the water can be drained and avoid the underground lamps soaked in water for a long time.   ▲Gravel   ▲ Drain pipe.   If the recessed Underground lights are soaked in water for a long time, the environment of the underground light in this case is worse than in the environment in swimming pool. Because the ground is often cleaned with detergents such as oxalic acid, oxalic acid is corrosive, the underground light will be corroded or damaged by oxalic acid, so water or vapor will probably seep into the housing of the underground lights.   So if the installation ground is on flat level and there are drainage measures, will everything be fine and there will be no water leakage issue? Unfortunately, even if these operations are reaches this level and proper, it is still possible for LED underground lights to fail, or with water infiltrated.   ③Power connection for LED underground   Another possible cause of water leakage is the power wiring.   Ordinary wiring with tape is actually not waterproof, because water vapor will enter the interior of the lamp along the gap of the tape wrapped around the wire, forming moisture or water mist inside the lamp.   So the reasonable way should be to use a IP68 connector or waterproof junction box. The junction box is filled with soft silicone glue; this way is helpful for preventing water vapor infiltrate to the housing through the wire entry.     There are also many LED in-ground lights delivered with IP67 waterproof male and female connector, most people take for granted it is waterproof for this kind of connectors, BUT In fact, it is not waterproof (after a long time)!     ▲Normal Waterproof male and female plugs   In fact, due to man-made reasons such as the tolerance and poor quality of male and female sockets, water will leak from the gap.   Click here to know How to dispose the outdoor light connector correctly?       Conclusion Overall, the water leakage problem of the buried LED lamp is either caused by the unqualified quality of the lamp itself, or it is caused by the improper operation on installation.   After find out the reason of underground lights leak problem, you are now able to know how to deal with and avoid the leakage problem of outdoor lighting fixture. COMI Lighting is a professional manufacturer and supplier on outdoor lighting, landscape lighting, and architectural lighting luminaires, such as underground lights, in-ground light, underwater lights, swimming pool lights, step lights, wall washer, landscape lights, garden lights, flood lights and etc. If you need a professional company to help you handle the lighting products, feel free to be invited to be one of our partners and contact us @ sales@comilandscapelighting.com or call us 0086 755 2315 8250.

The LED Outdoor lighting fixtures are usually used for and installed in outdoor applications, so the outdoor lighting luminaires are required to withstand the test of ice, snow, scorching sun, wind, rain, lightning, water, or even drive over, or corroded by sea water or sea wind and so on for a long time. and the cost of outdoor lighting fixtures are relatively high. However, because they are difficult to dismantle, remove and repair when these LED outdoor lighting lamps are used on external walls, building, or underground or underwater and other severe environments, so the LED outdoor lighting luminaires must meet the requirements of long-term stable work. And LED diode is a delicate semiconductor component. If the inner of LED outdoor lamps especially the LEDs and other components are affected with damp, it will lead to the LED chip absorb moisture, and LED, PCB and other components are damaged. Therefore, the LED is suitable for working at a dry and low temperature. To ensure that LEDs can work stably for a long time under harsh outdoor conditions, the waterproof structure design of lamps is extremely critical for outdoor lighting fixtures. Factors affecting the waterproof performance of LED outdoor lamps: 1. Ultraviolet rays Ultraviolet rays have a destructive effect on those exposed outside the LED outdoor lamp, such as: the wire insulated rubber, lamp housing protective coating, plastic parts, sealing glue, sealing rubber ring, and adhesive and etc. After the insulated rubber of the wire is aged and cracked, water vapor will penetrate into the interior of the lamp through the gap in the wire core. After the coating of the housing of the lamp is aged, the coating on the edge of the lamp housing will be cracked or peeled off, or with gaps. After the plastic housing ages, it will deform and crack. The electronic potting colloid will crack when it ages. The sealing rubber ring is aging and deformed, and gaps will appear. The adhesive between the structural parts is aging, and gaps will appear after the adhesive force is reduced. These are the damages of ultraviolet rays to the waterproof ability of outdoor luminaires. 2. High and low temperature difference The outdoor temperature changes greatly every day, especially In summer, the surface temperature of outdoor lamps can rise to 50-60℃ during the day time, and drop to 10-20 ℃ at night. In winter or ice snow days, the temperature can drop to below zero, and the temperature difference changes even more. For outdoor lamps, the aging and deformation of materials are accelerated in the high temperature environment in summer; in winter, when the temperature drops below zero, the plastic parts become brittle, or crack under the pressure of ice and snow. 3. Thermal expansion and cold contraction Luminaire housing expands with heat and contracts with cold: Changes in temperature lead to thermal expansion and contraction of the luminaire. Different materials (such as glass and aluminum profiles) have different linear expansivity or linear expansion coefficients, and the two different materials will be displaced at the junction. The process of thermal expansion and contraction is repeating and happening every day, and the relative displacement is also repeating and happening, which greatly damages the airtightness of the outdoor lamps. The internal air expands with heat and contracts with cold: It is often seen that water droplets condense on the inner of glass cover of the LED underground lights in the ground of the public square or road and etc. How does the water drop penetrate into the underground lamp which sealed and filled with gel completely? This is the result of “The Siphon effect” when heat expands and contracts. For example, when the temperature drops from 60°C to 10°C, the change in air pressure inside the lamp is about: 1-(273+60) K/(273+10)K=-0.18 atm=-1.86 m water column. The temperature rises, and under the action of huge negative pressure, the humid air passes through the tiny gaps in the material of the lamp body. After the humid air penetrates into the lamp body and encounters the lamp housing with lower temperature, it condenses into water droplets and gathers. After the temperature is lowered, under the action of positive pressure, the air is discharged from the lamp body, but the water droplets are still attached to the lamp. The breathing process of temperature changes is repeated every day, and more and more water accumulates inside the lamp. The physical changes of thermal expansion and contraction makes the waterproof and airtight design of outdoor LED lamps a complex system engineering. The physical changes of thermal expansion and contraction make the waterproof and airtight design of outdoor LED lamps a complex system engineering. The following is an analysis of the technical characteristics of the two lighting waterproof systems (one is structural waterproofing and the other one is Sealing Materials waterproofing) to understand their advantages and disadvantages. I. About structural waterproofing Technology: Outdoor luminaires based on structural waterproof design need to be closely matched with silicone sealing rings for waterproofing. The lamp housing structure is more precise and complex. It is usually suitable for larger-sized lamps with medium and high power, such as linear floodlights, square flood light and round flood light or spotlights and etc. Structural waterproof lamps are only assembled with purely mechanical structures by simple tools, less assembly procedures and processes, and taken short assembly time, and it is convenient and quick to be repaired. However, the outdoor lighting fixture with structural waterproofing have higher requirements for machining, and the dimensions of each parts must be precisely matched. Only suitable materials and structures can guarantee its waterproof performance. The following are several key design requirements: (1) Silicone waterproof ring: Choose a material with a suitable hardness and design a suitable pressure for silicone waterproof ring, and its cross-sectional shape is also very critical for the waterproof silicone ring. The wire lead is a channel for water seepage, so it is necessary to choose a waterproof wire, and the use of a strong cable waterproof fixing head (PG head) can prevent water vapor from penetrating through the gaps in the cable core, but it is required that the wire insulation layer or rubber will be not age or crack under long-term strength squeeze of waterproof PG head. (2) Temperature difference: At ordinary temperature, the linear expansion coefficient of glass is about 7.2×10~m/(m·K), and that of aluminum alloy is about 23.2×10-m/(m·K). There is a big difference between the two. When the outer size of the lamp is large, it must be taken into consideration carefully. Assuming that the length of the lamp is 1 000 mm, the temperature of the lamp housing is 60°C during the day, its temperature drops to 10°C at night or when raining, and the temperature difference is around 50°C, the glass and aluminum profiles will contact by 0.36 mm and 1.16 mm respectively, and the relative displacement is 0.8mm, the sealing elements or parts is repeatedly pulled during the repetitive displacement process, which affects the airtightness for the outdoor lighting fixtures very much.   (3) Breather valve: Many medium and high-power outdoor LED lamps can be equipped with waterproof breather valve (or vacuum pressure valves). The function of molecular sieves of waterproof breather valve can help to balance the internal and external air pressure of the lamp and eliminate negative pressure, prevent water vapor from being absorbed, and ensure that the interior of the lamps is dry. This economical and effective waterproof device (breather valve) can improve the waterproof ability of the original structure design. However, the breather valve is not suitable for underground light, in-ground lights, buried lamps, underwater lamps and other lamps that are often submersed in water. The long-term stability of the waterproof structure of the lamp is closely related to its design, the performance of the selected lamp materials, the processing accuracy, and the assembly technology. If the weak parts of outdoor lighting fixture are deformed and water seeps, it will cause irreversible damage to the LED and electronic devices, which it is difficult to predict during the factory inspection process, and it is sudden happen to the lighting fixtures. Therefore, to improve the reliability of structural waterproof outdoor lamps, it is necessary to continue to improve waterproof technology.     II. About sealing Materials waterproofing What is About material waterproofing for outdoor lighting fixtures? The outdoor lighting fixture designed by materials waterproof, which is used filling and sealing glue to insulate and waterproof, and used glue or gel to seal the joints or gaps between structural parts to make electrical components completely airtight and achieve the waterproof effect for outdoor lighting.   With the development of waterproof material technology, various types and brands of special sealing for outdoor lamps continue to appear, such as modified epoxy resin, modified polyurethane resin, modified organic silica gel, etc. With different chemical formulas, the physical and chemical performance indicators of sealing adhesives such as elasticity, molecular structure stability, adhesion, UV resistance, heat resistance, low temperature resistance, hydrophobicity, and insulation performance are different. Elasticity: The softer of colloid and the smaller elastic modulus of colloid is, so the better of adaptability will be. Among them, the elastic modulus of modified silicone is the smallest. Molecular structure stability: it is required the chemical structure of the material is stable, and it will not age or crack under the long-term action of UV, air, and high& low temperature. Modified silicone is the most stable in these materials. Adhesion: If the adhesion is strong, it is not easy to peel off. The modified epoxy resin has the strongest adhesion, but its chemical structure is less stable, and it is easy to age and crack. Hydrophobicity: It is Indicator of the ability of the colloid to resist water seepage. The modified organic silica gel has better hydrophobicity in above several materials mentioned. Insulation: Insulation is one of indicators for the safety of outdoor lighting products. The special sealing glue/gel of the above mentioned materials are all good. From the comprehensive view of the above physical and chemical properties, the modified organosilicon material performed best for outdoor lighting products. Sealant The sealant is usually packaged in a tube, suitable for glue construction, and is generally used for bonding and sealing the joints between wire ends and shell structural parts. The commonly used one-component formula reacts with air moisture at room temperature and solidifies naturally. Special note: Some manufacturers use neutral curtain wall glue for construction instead of professional electronic sealant, which is easy to decompose harmful substances and damage lamps. Some types of sealing glue and sealant will decompose a small amount of chemical liquid or gas during the solidification process, for example: the phosphor of LED is easy to be damaged by the colloid decomposition product which on surrounding of the LED diodes, and resulting in color temperature shifted, or damage LED chips; or the colloid decompose substances that chemically react with transparent PC plastics, destroy the structure of PC, and so on. This is a potential hazard in the application of colloids. It is necessary to fully understand its chemical and physical properties from the colloid manufacturer, and test and verify when design lighting fixtures and select the sealing materials. The sealant is most affected by thermal expansion and contraction in the bonding and sealing of the shell/housing structure of the outdoor lamps. Especially for large outdoor luminaires, the linear expansion coefficients of different materials are quite different, and the pulled and cracks constantly caused by the phenomenon of thermal expansion and contraction to the outdoor lighting fixtures. Therefore, the waterproof ability of the material waterproof design mainly depends on the circuit board sealing. The production process of waterproof materials is relatively long, and it takes 24 hours for a glue-filling and solidification cycle. Some products are more complicated in design, and even require 2-3 glue-filling cycles, that is why the delivery time of outdoor lighting fixtures is long, and a large amount of production space is occupied and required, and the production environment Dirty. Meanwhile, it is very troublesome to repair the outdoor lighting products (such as IP67 LED in-ground lights and IP68 Underwater lights ) after the glue/gel is solidified. The structural design of sealing materials waterproofs type of outdoor lamps does not need to be too precise for, as long as there is space for sealing materials and the liquid does not leak out, and its waterproof performance is very good. Therefore, the material waterproof process is more suitable for outdoor lamps (underground lights or underwater lights) and indoor moisture-proof lamps, such as flexible light strips, small strip lights, buried lights, in-ground lights, pool lights, underwater lamps and etc.

IP66 Outdoor Flood light with Visor for Xihu University gate and architectural Lighting.           Products Used (For more information, Click here>> Outdoor Architectural Flood lighting-Applications -COMI Lighting Limited (comilandscapelighting.com))   Products Used Outdoor LED Floodlights IP66 with Light Barrier 120W 150W 200W IP66 Outdoor Flood light with Visor in Mono or RGBW DMX 75W 100W LED Architectural Lighting IP65 bracket or Tree Mounted 45W 60W