A novel method for using high-power automotive light sources

By combining liquid cooling pipes and a wiper mechanism, the problems of low heat dissipation efficiency and unstable defogging effect of LED light sources in automotive lighting are solved, achieving efficient heat dissipation and stable defogging, and improving the service life and safety of the lighting fixtures.

CN115628425BActive Publication Date: 2026-03-13WUHU RES INST OF XIAN UNIV OF ELECTRONIC SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-12-10
Publication Date
2026-03-13

AI Technical Summary

Technical Problem

The low heat dissipation efficiency of LED light sources in existing automotive lighting leads to high temperature rise, large light decay, and unstable defogging effect. Traditional desiccants and antifogging coatings are costly and ineffective.

Method used

By employing liquid-cooled pipes and a new type of condenser cover, combined with a high thermal conductivity metal serrated condenser plate and a scraping mechanism, efficient heat dissipation and defogging are achieved through liquid cooling and scraping away residual water film.

Benefits of technology

It improves heat dissipation efficiency, reduces costs, ensures the stability and safety of the defogging effect, reduces the vaporization and backflow of condensate, and enhances the lifespan and aesthetics of the lamps.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a novel method for using a high-power automotive light source, relating to the technical field of lighting equipment and accessories. The high-power light source includes a lamp body and a cover, with the cover mounted at the end of the lamp body. An LED light source board is installed inside the lamp body, and an LED light source lens is also mounted inside the lamp body via a lens bracket. A light source reflector is mounted at the other end of the lens bracket. The invention also includes a drive base, liquid cooling pipes, a novel condenser cover, and a wiper mechanism. By incorporating liquid cooling pipes and a novel condenser cover, this invention replaces traditional air cooling with liquid cooling, significantly improving heat dissipation efficiency, reducing weight and saving costs, while simultaneously enhancing condensation. The wiper mechanism within the novel condenser cover allows for reciprocating scraping of the wiper head within the toothed grooves of the serrated condenser plate, preventing the re-vaporization and backflow of condensate adhering to the serrated condenser plate, further ensuring defogging effectiveness.
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Description

Technical Field

[0001] This invention relates to the field of lighting equipment and related facilities, specifically to a novel method for using a high-power automotive light source. Background Technology

[0002] With the development of the automotive industry, LED light sources in automotive lighting are gradually becoming mainstream, and the requirements for heat dissipation of LEDs are also getting higher and higher. The higher the temperature rise, the greater the light decay of LEDs. Therefore, in order to control the optical performance of LEDs, the temperature rise of LEDs should be as small as possible while ensuring the power of LEDs. Therefore, it is necessary to equip them with supporting facilities for efficient heat dissipation.

[0003] Currently, the automotive lighting industry generally uses heat sinks and cooling fans to dissipate heat for high-power LED light sources. This not only increases the weight and cost of the light source module, but also makes it prone to condensation and fogging due to uneven temperature distribution inside the lamp. This not only affects driving safety, but also the lifespan and aesthetics of the lamp. Current defogging methods mainly rely on desiccants and anti-fogging coatings. However, desiccants have a limited lifespan and become ineffective after saturation. Anti-fogging coatings are not only expensive and require high-precision manufacturing processes, but they are also prone to dripping with condensate, resulting in unstable anti-fogging effects. Summary of the Invention

[0004] The purpose of this invention is to provide a novel method for using high-power automotive light sources to overcome the aforementioned deficiencies in the prior art.

[0005] A novel method for using a high-power automotive light source includes a lamp body and a lens cover. The lens cover is installed at the end of the lamp body. An LED light source board is installed inside the lamp body, and an LED light source lens is also installed inside the lamp body via a lens bracket. A light source reflector is installed at the other end of the lens bracket. The system also includes a drive base, a liquid cooling pipe, a novel condenser cover, and a wiper mechanism. The drive base is installed on the lens bracket. The LED light source board is installed on the upper end of the drive base and positioned below the light source reflector. The liquid cooling pipe is installed on the side end of the drive base. The novel condenser cover is installed on the outer end of the lamp body and is used to remove water vapor from inside the automotive light fixture. The wiper mechanism is installed inside the novel condenser cover and is used to scrape off residual water film to improve the defogging effect.

[0006] Preferably, the novel condenser cover includes a thermally conductive filter, a semiconductor cooling plate, a serrated condenser plate, and a drain U-shaped pipe. The thermally conductive filter is installed on the side of the lamp body, and a thermally conductive plug is connected to the middle of the thermally conductive filter. A sealing element is fixedly connected to the side of the thermally conductive filter, and the other end of the sealing element is connected to the semiconductor cooling plate. The serrated condenser plate is fixedly disposed on the side of the semiconductor cooling plate near the thermally conductive filter, and the drain U-shaped pipe is installed at the lower end of the sealing element and positioned directly below the serrated condenser plate.

[0007] Preferably, the scraping mechanism includes a sliding part, a connecting frame, a tension spring, and a loading chamber. Several vertically arranged scraping heads are evenly distributed on the side of the sliding part near the serrated condenser plate. Two symmetrically arranged sliders are fixed to the other side of the sliding part. The connecting frame is fixed to the sliding part, and a receiving cavity is opened at the side end of the connecting frame. The lower end of the tension spring is connected to a connecting member, and the upper end of the tension spring is connected to the inner top wall of the sealing member. Guide rails are slidably provided on both sliders, and the guide rails are fixedly installed on the heat-conducting filter screen. There are two loading chambers symmetrically fixedly installed on the heat-conducting filter screen. The loading chambers are slidably disposed within the receiving cavity. A rubber bulb is disposed between the receiving cavities in the loading chamber, and the rubber bulb is filled with antifreeze.

[0008] Preferably, the liquid cooling pipe is installed through a heat-conducting plug in the middle of the new condenser cover, and the other end is connected to the outlet branch of the vehicle's liquid cooling pipeline at the engine compartment radiator.

[0009] Preferably, the serrated condenser plate is made of a high thermal conductivity metal, and the teeth on the serrated condenser plate are matched with the scraper head.

[0010] Preferably, the lower part of the connecting frame is a curved concave shape that matches the outer end face of the heat-conducting plug.

[0011] The advantages of this invention are:

[0012] (1) By setting up liquid cooling pipes and a new type of condenser cover, liquid cooling heat dissipation method is adopted to replace traditional air cooling heat dissipation. The heat inside the lamp body is directly carried away by the coolant in the liquid cooling pipes, which greatly improves the heat dissipation efficiency, reduces weight and saves costs. At the same time, based on the good transfer of the cooling effect of the semiconductor cooling plate by the sawtooth condenser plate made of high thermal conductivity metal material, the sawtooth structure of the sawtooth condenser plate end face increases the contact area with the high temperature and high humidity airflow inside the lamp body. According to the strengthening technology and principle of film condensation, enhanced condensation can be achieved.

[0013] (2) By setting a scraper mechanism in the new type of condenser cover, during the vehicle start-stop phase, the coolant in the rubber bulb deforms in the cavity due to its own inertia, which drives the scraper head on the sliding part to scrape off the residual condensate adhering to the tooth groove of the serrated condenser plate. The condensate is discharged out of the lamp through the drain U-shaped pipe below, and then the elastic action of the tension spring resets the scraper head to move upward. This achieves the purpose of the reciprocating scraper head scraping repeatedly in the tooth groove of the serrated condenser plate, preventing the condensate adhering to the serrated condenser plate from being vaporized and flowing back again, further ensuring the defogging effect. At the same time, the drain U-shaped pipe can also separate the air inside and outside the lamp, thereby ensuring that the new type of condenser cover only acts on the inside of the lamp. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the internal structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the structure of the novel condenser cover in this invention.

[0016] Figure 3 These are schematic diagrams of the novel condenser cover from different perspectives in this invention.

[0017] Figure 4 This is a schematic diagram of the scraping mechanism in this invention.

[0018] Figure 5 This is an internal cross-sectional view of the scraping mechanism in this invention.

[0019] Figure 6 This is an external schematic diagram of the entire invention.

[0020] Among them, 1-lamp body, 2-face cover, 3-LED light source board, 4-lens bracket, 5-LED light source lens, 6-light source reflector, 7-drive seat, 8-liquid cooling pipe, 9-new type condenser back cover, 10-scraping mechanism, 91-thermal conductive filter, 92-semiconductor cooling plate, 93-serrated condenser plate, 94-drain U-shaped pipe, 95-thermal conductive plug, 96-seal, 101-sliding part, 102-connecting frame, 103-tension spring, 104-loading chamber, 105-scraping head, 106-slider, 107-accommodating cavity, 108-guide rail, 109-rubber balloon. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0022] like Figures 1 to 6 As shown, a novel method for using a high-power automotive light source includes a lamp body 1 and a faceplate 2. The faceplate 2 is installed at the end of the lamp body 1. An LED light source board 3 is installed inside the lamp body 1. An LED light source lens 5 is also installed inside the lamp body 1 via a lens bracket 4. A light source reflector 6 is installed at the other end of the lens bracket 4. The system also includes a drive seat 7, a liquid cooling pipe 8, a novel condenser cover 9, and a wiper mechanism 10. The drive seat 7 is installed on the lens bracket 4. The LED light source board 3 is installed on the upper end of the drive seat 7 and positioned below the light source reflector 6. The liquid cooling pipe 8 is installed on the side end of the drive seat 7. The novel condenser cover 9 is installed on the outer end of the lamp body 1 and is used to remove water vapor from inside the automotive light fixture. The wiper mechanism 10 is installed inside the novel condenser cover 9 and is used to scrape off residual water film to improve the defogging effect.

[0023] In this embodiment, the novel condenser cover 9 includes a thermally conductive filter 91, a semiconductor cooling plate 92, a serrated condenser plate 93, and a drain U-shaped pipe 94. The thermally conductive filter 91 is installed on the side of the lamp body 1. A thermally conductive plug 95 is connected to the middle of the thermally conductive filter 91. A sealing element 96 is fixedly connected to the side of the thermally conductive filter 91. The other end of the sealing element 96 is connected to the semiconductor cooling plate 92. The serrated condenser plate 93 is fixedly disposed on the side of the semiconductor cooling plate 92 near the thermally conductive filter 91. The drain U-shaped pipe 94 is installed at the lower end of the sealing element 96 and is positioned directly below the serrated condenser plate 93.

[0024] In this embodiment, the scraping mechanism 10 includes a sliding part 101, a connecting frame 102, a tension spring 103, and a loading chamber 104. Several vertically arranged scraping heads 105 are evenly distributed on the side of the sliding part 101 near the serrated condenser plate 93. Two symmetrically arranged sliders 106 are fixed to the other side of the sliding part 101. The connecting frame 102 is fixed to the sliding part 101, and a receiving cavity 107 is opened on the side end of the connecting frame 102. The lower end of the tension spring 103 is connected to... On the connector, the upper end of the tension spring 103 is connected to the inner top wall of the seal 96. Guide rails 108 are slidably provided on both sliders 106. The guide rails 108 are fixedly installed on the heat-conducting filter 91. There are two loading chambers 104, which are symmetrically fixedly installed on the heat-conducting filter 91. The loading chambers 104 are slidably disposed in the receiving cavity 107. A rubber balloon 109 is disposed in the loading chamber 104 between the receiving cavity 107. The rubber balloon 109 is filled with antifreeze.

[0025] It should be noted that the filling material inside the rubber balloon 109 is antifreeze, which can ensure that the cooling and defogging of the vehicle interior can still be carried out smoothly even at low ambient temperatures.

[0026] In this embodiment, the liquid cooling pipe 8 is installed through the heat-conducting plug 95 in the middle of the new condenser back cover 9, and the other end is connected to the outlet branch of the vehicle's liquid cooling pipe at the engine compartment radiator.

[0027] It is worth noting that the sawtooth condenser plate 93 is made of a high thermal conductivity metal, and the teeth on the sawtooth condenser plate 93 cooperate with the scraper head 105, so that the reciprocating movement of the scraper head 105 quickly scrapes the residual water film attached to the tooth groove of the sawtooth condenser plate 93.

[0028] In addition, the lower part of the connecting bracket 102 is curved and concave to match the outer end face of the heat-conducting plug 95, thereby ensuring that the scraping head 105 has a sufficiently long scraping range and a better defogging effect.

[0029] Working process and principle: During use, when the LED light source board 3 starts working, the liquid cooling pipe 8 is turned on, and the coolant begins to circulate. After the high-power LED lamp is liquid cooled, the temperature of the driver seat 7 begins to rise, and the temperature of the coolant rises. The heated coolant passes through the new type of condenser cover 9, while the high-temperature surface of the semiconductor cooling plate 92 is located on the outside of the lamp body 1. The high-temperature surface dissipates heat through the external air, and the internal low-temperature surface is in contact with the back of the sawtooth condenser plate 93. The sawtooth condenser plate 93, made of high thermal conductivity metal, can effectively transfer the cooling effect of the semiconductor cooling plate 92. The sawtooth structure covering the surface increases the contact area with the high-temperature and high-humidity airflow. At the same time, the high-temperature and high-humidity airflow in the space of the lamp body 1 passes through the thermally conductive filter 91 and immediately condenses after passing through the low-temperature surface of the sawtooth condenser plate 93. The condensate flows through the grooves of the sawtooth condenser plate 93 into the drain U-shaped pipe 94 and is discharged outside the lamp.

[0030] The thermally conductive filter 91 not only filters dust and foreign objects from outside the lamp, but also allows the high-temperature coolant from the outlet of the drive seat 7 to be transferred to the thermally conductive filter 91 through the thermal plug 95. When the air passes through the thermally conductive filter 91, it will be further heated and the temperature will rise. When the air passes through the thermally conductive filter 91 to the surface of the sawtooth condenser plate 93, the condensation effect will be further enhanced. Finally, the condensate will be discharged from the lamp through the drain U-shaped pipe 94, thereby achieving the function of defogging. The drain U-shaped pipe 94 not only drains water, but also separates the air outside the lamp from the internal controller of the lamp, ensuring that the new condenser cover 9 only acts on the inside of the lamp.

[0031] Furthermore, a scraping mechanism 10 is installed inside the new type of condenser cover 9. When the vehicle starts or stops, the rubber bulb 109 filled with antifreeze deforms and is squeezed into the receiving cavity 107, which drives the connecting frame 102, the sliding part 101, and several evenly distributed scraping heads 105 to move down synchronously. The scraping heads 105, which cooperate with the toothed groove surface of the serrated condenser plate 93, scrape off the residual water film on the serrated condenser plate 93 from top to bottom. Then, under the elasticity of the tension spring 103, the scraping heads 105 are driven to reset and move up, thereby realizing the reciprocating scraping of the scraping heads 105 in the toothed groove of the serrated condenser plate 93, preventing the re-vaporization and backflow of the condensate on the serrated condenser plate 93, and further ensuring the defogging effect.

[0032] Based on the above, this invention adopts liquid cooling heat dissipation instead of traditional air cooling heat dissipation by setting up liquid cooling pipe 8 and a new type of condenser cover 9. The heat inside the lamp body 1 is directly carried away by the coolant in the liquid cooling pipe 8, which greatly improves the heat dissipation efficiency, reduces weight and saves costs. At the same time, based on the good transfer of the cooling effect of the semiconductor cooling plate 92 by the sawtooth condenser plate 93 made of high thermal conductivity metal material, the sawtooth structure of the end face of the sawtooth condenser plate 93 increases the contact area with the high temperature and high humidity airflow inside the lamp body 1. According to the strengthening technology and principle of film condensation, enhanced condensation can be achieved.

[0033] By setting a scraper mechanism 10 inside the new condenser cover 9, during the vehicle start-stop phase, the coolant in the rubber bulb 109 deforms in the receiving cavity 107 under its own inertia, driving the scraper head 105 on the sliding part 101 to scrape off the residual condensate adhering to the tooth groove of the serrated condenser plate 93. The condensate is then discharged outside the lamp through the drain U-shaped pipe 94 below. The elastic action of the tension spring 103 then resets the scraper head 105 and moves it upward, thereby achieving the purpose of reciprocating scraping of the scraper head 105 in the tooth groove of the serrated condenser plate 93. This prevents the condensate adhering to the serrated condenser plate 93 from being vaporized and flowing back again, further ensuring the defogging effect. At the same time, the drain U-shaped pipe 94 can also isolate the air inside and outside the lamp, thereby ensuring that the new condenser cover 9 only acts on the inside of the lamp.

[0034] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A novel method for using a high-power automotive light source, the high-power light source comprising a lamp body (1) and a mask (2), the mask (2) being mounted at the end of the lamp body (1), an LED light source board (3) being installed inside the lamp body (1), and an LED light source lens (5) being mounted inside the lamp body (1) via a lens bracket (4), the other end of the lens bracket (4) being fitted with a light source reflector (6), characterized in that, It also includes a drive seat (7), a liquid cooling pipe (8), a new type of condenser back cover (9), and a wiper mechanism (10). The drive seat (7) is mounted on the lens bracket (4). The LED light source board (3) is mounted on the upper end of the drive seat (7) and placed below the light source reflector (6). The liquid cooling pipe (8) is mounted on the side end of the drive seat (7). The new type of condenser back cover (9) is mounted on the outer end of the lamp body (1) and is used to remove water vapor in the automotive lamp. The wiper mechanism (10) is mounted inside the new type of condenser back cover (9) and is used to scrape off residual water film to improve the defogging effect. The novel condenser cover (9) includes a thermally conductive filter (91), a semiconductor cooling plate (92), a serrated condenser plate (93), and a drain U-shaped pipe (94). The thermally conductive filter (91) is installed on the side of the lamp body (1). A thermally conductive plug (95) is connected to the middle of the thermally conductive filter (91). A sealing element (96) is fixedly connected to the side of the thermally conductive filter (91). The other end of the sealing element (96) is connected to the semiconductor cooling plate (92). The serrated condenser plate (93) is fixedly installed on the semiconductor cooling plate (92) near the side of the thermally conductive filter (91). The drain U-shaped pipe (94) is installed at the lower end of the sealing element (96) and is placed directly below the serrated condenser plate (93). The scraping mechanism (10) includes a sliding part (101), a connecting frame (102), a tension spring (103), and a loading chamber (104). Several vertically arranged scraping heads (105) are evenly distributed on the side of the sliding part (101) near the serrated condenser plate (93). Two symmetrically arranged sliders (106) are fixed to the other side of the sliding part (101). The connecting frame (102) is fixed to the sliding part (101), and a receiving cavity (107) is opened on the side of the connecting frame (102). The lower end of the tension spring (103) is connected to the connecting... On the component, the upper end of the tension spring (103) is connected to the inner top wall of the seal (96). Guide rails (108) are slidably provided on both sliders (106). The guide rails (108) are fixedly installed on the heat-conducting filter (91). There are two loading chambers (104) that are symmetrically fixedly installed on the heat-conducting filter (91). The loading chambers (104) are slidably disposed in the receiving cavity (107). A rubber balloon (109) is provided in the loading chamber (104) between the receiving cavity (107). The rubber balloon (109) is filled with antifreeze. The lower part of the connecting frame (102) is curved and concave to match the outer end face of the heat-conducting plug (95); The specific method of using the high-power light source is as follows: When the LED light source board (3) starts working, the liquid cooling pipe (8) is turned on. After the coolant starts circulating to the high-power LED lamp for liquid cooling, the temperature of the drive seat (7) starts to rise. The temperature of the coolant rises. The heated coolant passes through the new type of condenser cover (9). The high-temperature surface of the semiconductor cooling plate (92) is located outside the lamp body (1). The high-temperature surface dissipates heat through the external air. The internal low-temperature surface is in contact with the back of the sawtooth condenser plate (93) to transfer the cooling effect of the semiconductor cooling plate (92). The heat-conducting filter (91) can filter dust and foreign objects outside the lamp. The high-temperature coolant at the outlet of the drive seat (7) transfers the high temperature to the heat-conducting filter (91) through the heat-conducting plug (95). The air will be further heated after passing through the heat-conducting filter (91) and the temperature will rise. When the air passes through the heat-conducting filter (91) to the surface of the sawtooth condenser plate (93), it will immediately condense. The condensate flows through the grooves of the sawtooth condenser plate (93) into the drain U-shaped pipe (94) and is discharged outside the lamp to achieve defogging. When the vehicle starts or stops, the rubber bulb (109) filled with antifreeze deforms and is squeezed into the receiving cavity (107), causing the connecting bracket (102), the sliding part (101), and several evenly distributed wiper heads (105) to move down synchronously. The wiper heads (105), which cooperate with the toothed surface of the serrated condenser plate (93), scrape off the residual water film on the serrated condenser plate (93) from top to bottom. Then, under the elasticity of the tension spring (103), the wiper heads (105) are driven to reset and move up, thereby realizing the reciprocating scraping of the wiper heads (105) in the toothed groove of the serrated condenser plate (93).

2. The method of using a novel high-power automotive light source according to claim 1, characterized in that: The liquid cooling pipe (8) is installed in the middle of the new condenser cover (9) through a heat-conducting plug (95), and the other end is connected to the outlet branch of the vehicle's liquid cooling pipeline at the engine compartment radiator.

3. The method of using a novel high-power automotive light source according to claim 1, characterized in that: The sawtooth condenser plate (93) is made of a high thermal conductivity metal, and the teeth on the sawtooth condenser plate (93) are matched with the scraper head (105).

Citation Information

Patent Citations

  • Novel automobile high-power light source

    CN112524567A