Power-driven heat conduction structure of lamp
By adopting a three-dimensional heat-conducting structure on the two contact surfaces of the power driver and using high-thermal-conductivity silicone heat-conducting sheets and aluminum blocks, the problem of poor heat dissipation of the power driver is solved, more efficient heat dissipation is achieved, the life of the lamp is extended, and reliability is improved.
Patent Information
- Application Number
- CN202422886691.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The power supply drive heat dissipation conditions of existing high-power LED lamps are poor, resulting in a shortened lifespan, especially in high-temperature environments.
It adopts a three-dimensional heat conduction structure, conducts heat on the two large contact surfaces of the power drive, uses high thermal conductivity silicone thermal conductive sheets and thermal conductive aluminum blocks to increase the heat conduction area and the thermal conductivity of the contact material, and combines the heat dissipation groove design to achieve rapid heat dissipation.
It significantly improves the thermal conductivity of the power drive, reduces the temperature by about 5°C, extends the life of the lamp by about 20,000 hours, and improves the reliability and energy efficiency of the lamp.
Smart Images
Figure CN223319042U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lighting equipment, in particular to a heat-conducting structure driven by a power supply of a lamp. Background Art
[0002] The lifespan of existing high-power LED lamps is limited by their power drivers. While LED light sources can often reach 100,000 hours, poor heat dissipation can significantly impact their lifespan. With adequate heat dissipation and operating within the appropriate temperature range, the lifespan can reach 100,000 hours. Therefore, heat dissipation is particularly important for high-power lamps. Currently, common lamps often utilize single-sided heat conduction, which inadequately dissipates heat from the driver and makes it difficult to quickly dissipate heat in high-temperature environments, significantly impacting lamp life.
[0003] Heat conduction through the power driver mounting surface is a common method of heat conduction for lamps. When the lamp is required to operate under high temperature conditions, such as an ambient temperature of 65°C and a 400W power driver, the high total power will cause the driver to generate a large amount of heat (approximately 32W). At this time, the power supply housing temperature can easily exceed 70°C. Currently, the lifespan of most power supplies from internationally renowned brands will begin to be significantly affected when the housing temperature exceeds 70°C. Therefore, for high-power lamps operating in high-temperature environments, relying solely on single-sided heat conduction is far from enough. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, the purpose of the present invention is to provide a heat-conducting structure driven by a power supply of a lamp, which can conduct heat on both large contact surfaces of the power supply drive, greatly improving the heat conduction efficiency, thereby reducing the temperature of the power supply drive and increasing the life of the lamp.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a power supply cavity shell, a power supply cavity upper cover, a power supply driver and a heat-conducting block module, the power supply driver is installed in the power supply cavity shell; the power supply cavity upper cover is installed on the power supply cavity shell; the heat-conducting block module is arranged between the power supply cavity shell and the power supply cavity upper cover, and the heat-conducting block module includes a first heat-conducting gasket, a heat-conducting aluminum block and a second heat-conducting gasket; the first heat-conducting gasket and the second heat-conducting gasket are respectively installed on the upper and lower sides of the heat-conducting aluminum block.
[0006] As a preferred solution of the power-driven heat-conducting structure of the lamp of the present invention, the first heat-conducting gasket and the second heat-conducting gasket are silicone heat-conducting pads with high thermal conductivity.
[0007] As a preferred solution of the power-driven heat-conducting structure of the lamp of the present invention, the thickness of the first heat-conducting gasket is 0.8-1.2 mm.
[0008] As a preferred solution of the power-driven heat-conducting structure of the lamp of the present invention, the thickness of the second heat-conducting gasket is 2.8-3.2 mm.
[0009] As a preferred solution of the power-driven heat-conducting structure of the lamp of the present invention, a plurality of heat-dissipating grooves are arranged side by side on the heat-conducting aluminum block.
[0010] As a preferred solution of the power-driven heat-conducting structure of the lamp of the present invention, the first heat-conducting gasket is bonded to the upper part of the heat-conducting aluminum block with adhesive; the second heat-conducting gasket is bonded to the lower part of the heat-conducting aluminum block with adhesive.
[0011] As a preferred solution for the power-driven heat-conducting structure of the lamp described in the utility model, screw mounting holes are provided at both ends of the heat-conducting aluminum block; mounting holes are provided on the upper cover of the power cavity corresponding to the screw mounting holes, and the heat-conducting aluminum block is fastened to the upper cover of the power cavity with countersunk screws.
[0012] Compared with the existing technology, the beneficial effect of the present invention is that the present invention is a three-dimensional heat-conducting structure, which can conduct heat on the two large contact surfaces of the power drive, greatly improving the heat conduction efficiency, thereby reducing the temperature of the power drive and increasing the life of the lamp. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:
[0014] Figure 1 This is a schematic diagram of the decomposition structure of the utility model.
[0015] Figure 2 This is a schematic structural diagram of the heat-conducting aluminum block of the present invention.
[0016] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model.
[0017] Figure 4 Schematic diagram of the cross-sectional structure without a thermal conductive module.
[0018] Numbers in the figure: 1. Power cavity shell; 2. Power cavity cover; 21. Mounting hole; 3. Power drive; 4. Heat conductive block module; 41. First heat conductive gasket; 42. Heat conductive aluminum block; 43. Second heat conductive gasket; 42-1. Heat dissipation groove; 42-2. Screw mounting hole. DETAILED DESCRIPTION
[0019] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.
[0020] Example 1
[0021] Reference Figure 1-4 , which is the first embodiment of the utility model, provides a heat-conducting structure of the power drive of the lamp, which is a three-dimensional heat-conducting structure that can conduct heat on the two large contact surfaces of the power drive, greatly improving the heat-conducting efficiency, thereby reducing the temperature of the power drive and increasing the life of the lamp.
[0022] Specifically, it includes a power cavity shell 1, a power cavity upper cover 2, a power driver 3 and a heat conductive block module 4, the power driver 3 is installed in the power cavity shell 1; the power cavity upper cover 2 is installed on the power cavity shell 1; the heat conductive block module 4 is arranged between the power cavity shell 1 and the power cavity upper cover 2, and the heat conductive block module 4 includes a first heat conductive gasket 41, a heat conductive aluminum block 42 and a second heat conductive gasket 43; the first heat conductive gasket 41 and the second heat conductive gasket 43 are respectively installed on the upper and lower sides of the heat conductive aluminum block 42.
[0023] Preferably, the first thermally conductive pad 41 and the second thermally conductive pad 43 are silicone thermally conductive pads with high thermal conductivity, so as to ensure good contact between the thermally conductive block module 4, the power cavity cover 2 and the power driver.
[0024] Preferably, the thickness of the first thermally conductive gasket 41 is 0.8-1.2 mm. The thickness of the second thermally conductive gasket 43 is 2.8-3.2 mm. The optimal thickness of the first thermally conductive gasket 41 is 1 mm. The optimal thickness of the second thermally conductive gasket 43 is 3 mm, which can fill the unevenness of the drive surface while leaving enough elastic compression for closing the cover.
[0025] Preferably, a plurality of heat dissipation grooves 42-1 are arranged side by side on the heat-conducting aluminum block 42, which can facilitate heat dissipation while reducing the weight of the heat-conducting aluminum block 42 and facilitate installation and disassembly.
[0026] Preferably, the first thermally conductive gasket 41 is bonded to the upper part of the thermally conductive aluminum block 42 with adhesive; the second thermally conductive gasket 43 is bonded to the lower part of the thermally conductive aluminum block 42 with adhesive. Screw mounting holes 42-1 are provided at both ends of the thermally conductive aluminum block 42; mounting holes 21 are provided on the power cavity upper cover 2 at locations corresponding to the screw mounting holes 42-1, and the thermally conductive aluminum block 42 is fastened to the power cavity upper cover 2 with countersunk screws. When the power cavity upper cover 2 is opened, the thermally conductive block module 4 moves with the power cavity upper cover 2. When the power cavity upper cover 2 is closed, the thickness of the second thermally conductive gasket 43 can compensate for the unevenness of the upper surface of the power cavity shell 1. At the same time, the elastic gasket can allow the thermally conductive block module 4 to have good contact with the power drive.
[0027] The heat generated by the power driver when it is working is dissipated through three ways: heat conduction, heat convection and heat radiation. Among them, heat convection and heat radiation cannot be improved internally because the driver is inside the power cavity shell. To improve the heat dissipation of the driver, we can only start with heat conduction, which is also the most important way of heat dissipation. What affects the heat conduction of the driver is the contact area and the thermal conductivity of the contact material. The utility model conducts heat from the upper and lower main planes of the driver, doubling the heat conduction area of the traditional bottom surface. Because the cover needs to be opened and good surface contact needs to be maintained above the driver, an elastic second thermal pad is designed. The first and second thermal pads are both made of silicone thermal pads with a higher thermal conductivity (4W / (m*K)). Because the thermal conductivity of metal aluminum is about 160W / (m*K), which is much higher than the thermal pad, the design ensures the maximum thickness of the thermal aluminum block in the heat conduction path of the driver.
[0028] The three-dimensional heat-conducting structure of this lamp can reduce the temperature of the power supply housing by approximately 5°C compared to solutions without an upper heat-conducting structure, significantly extending the lifespan of the power supply by approximately 20,000 hours. This is particularly important for users who have difficulty installing and replacing lamps. For example, lighting damage in chemical plants or steel mills can seriously impact production and be very costly to maintain. If a power-driven, single-side heat-conducting solution were used to achieve the same effect, the housing would significantly increase in size and weight, far exceeding the weight of the heat-conducting module, and the material usage would increase significantly, which is not in line with the concept of energy conservation and environmental protection.
[0029] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may be modified or some or all of the technical features may be replaced with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.
Claims
1. A power-driven heat-conducting structure for a lamp, characterized in that: The invention comprises a power cavity shell (1), a power cavity upper cover (2), a power driver (3) and a heat conduction block module (4), wherein the power driver (3) is installed in the power cavity shell (1); the power cavity upper cover (2) is installed on the power cavity shell (1); the heat conduction block module (4) is arranged between the power cavity shell (1) and the power cavity upper cover (2); the heat conduction block module (4) comprises a first heat conduction gasket (41), a heat conduction aluminum block (42) and a second heat conduction gasket (43); the first heat conduction gasket (41) and the second heat conduction gasket (43) are respectively installed on the upper and lower sides of the heat conduction aluminum block (42).
2. The heat-conducting structure driven by a power supply of a lamp according to claim 1, characterized in that: The first heat-conducting pad (41) and the second heat-conducting pad (43) are silicone heat-conducting pads with high thermal conductivity.
3. The heat-conducting structure driven by a power supply of a lamp according to claim 2, characterized in that: The thickness of the first thermally conductive pad (41) is 0.8-1.2 mm.
4. The power-driven heat-conducting structure of the lamp according to claim 3, characterized in that: The thickness of the second thermally conductive pad (43) is 2.8-3.2 mm.
5. The heat-conducting structure driven by a power supply of a lamp according to claim 3, characterized in that: A plurality of heat dissipation grooves (42-1) are arranged side by side on the heat-conducting aluminum block (42).
6. The power-driven heat-conducting structure of the lamp according to claim 1 or 5, characterized in that: The first heat-conducting gasket (41) is bonded to the upper portion of the heat-conducting aluminum block (42) with adhesive; and the second heat-conducting gasket (43) is bonded to the lower portion of the heat-conducting aluminum block (42) with adhesive.
7. The power-driven heat-conducting structure of the lamp according to claim 6, characterized in that: Screw mounting holes (42-2) are provided at both ends of the heat-conducting aluminum block (42); mounting holes (21) are provided on the power cavity upper cover (2) corresponding to the screw mounting holes (42-2); and the heat-conducting aluminum block (42) is fastened to the power cavity upper cover (2) with countersunk screws.