Lamp heat dissipation device and vehicle

Abstract

The utility model discloses a lamp radiating device and a vehicle. The lamp radiating device comprises a lamp body, a radiator and a windshield washer, the radiator is located in the lamp body, a light-emitting element is installed outside the radiator, and a cooling flow channel is formed in the radiator; the washing kettle is located outside the lamp body, a liquid storage cavity is formed in the washing kettle, a cooling flow path is communicated between the liquid storage cavity and the cooling flow path, and a circulation loop is formed through the cooling flow path. According to the lamp heat dissipation device, the washing kettle of the vehicle is connected with the heat dissipation device of the lamp body, circulation between washing liquid in the washing kettle and the heat dissipation device is achieved so as to dissipate heat of a light-emitting element of the lamp body, and meanwhile heat of the lamp body is applied to the washing kettle. And the problem that the washing kettle is frozen to crack at low temperature or the washing liquid in the washing kettle is frozen at low temperature is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a lamp heat dissipation device and a vehicle. Background Art

[0002] When driving at night or in bad weather conditions, cars need to rely on headlights to ensure driving safety. LED headlights have significant advantages in brightness, energy saving, starting speed, etc., and have been widely used in vehicle lighting.

[0003] However, the luminous efficiency of LED lamp beads is greatly affected by temperature. When the temperature exceeds a certain temperature, the luminous efficiency drops significantly. When LED lamp beads work in a high temperature environment for a long time, the light decay becomes irreversible and the lifespan is shortened. When the LED lamp is cooled in the existing technology, the heat inside the lamp body is difficult to transfer to the outside, resulting in the luminous temperature of the LED lamp being too high and the luminous efficiency being low. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide a lamp heat dissipation device that connects a vehicle's washer pot to a radiator of the lamp body, allowing the washing liquid in the washer pot to circulate between the radiator to dissipate heat from the light-emitting elements of the lamp body. Simultaneously, heat from the lamp body is applied to the washer pot, preventing the washer pot from freezing or the washing liquid from freezing at low temperatures.

[0005] According to the embodiment of the utility model, the heat dissipation device of a lamp includes: a lamp body, a radiator and a washing pot; the radiator is located in the lamp body, a light-emitting element is installed outside the radiator, and a cooling flow channel is formed in the radiator; the washing pot is located outside the lamp body, and a liquid storage cavity is formed in the washing pot, a cooling flow path is connected between the liquid storage cavity and the cooling flow path, and a circulation loop is formed through the cooling flow path.

[0006] According to the lamp heat dissipation device of the embodiment of the present invention, a radiator is provided in the lamp body, and the radiator is provided with a liquid storage chamber, which is connected to the washing pot outside the lamp body to realize the heat dissipation circulation between the washing liquid in the washing pot and the radiator to dissipate heat to the light-emitting elements of the lamp body. The heat of the lamp body can be transferred to the outside of the lamp body to reduce the temperature of the lamp body and prevent the low luminous efficiency of the lamp body. At the same time, the heat of the lamp body is applied to the washing pot to prevent the washing pot from freezing and cracking at low temperatures or the washing liquid from freezing at low temperatures.

[0007] According to the lamp heat dissipation device of the embodiment of the present invention, the cooling flow path includes a first flow path and a second flow path, the radiator is provided with a liquid outlet and a liquid inlet, the liquid outlet is connected to the washing pot through the first flow path, and the liquid inlet is connected to the washing pot through the second flow path; a first one-way valve is provided at the liquid outlet, and the first one-way valve is suitable for being pushed open when the pressure in the radiator is greater than the pressure of the washing pot, and a second one-way valve is provided at the liquid inlet, the height of the washing pot is higher than the height of the radiator, and the second one-way valve is suitable for opening under the liquid flow pressure of the second flow path when the first one-way valve is opened.

[0008] According to the lamp heat dissipation device of an embodiment of the present invention, a heat-conducting component is connected between the light-emitting element and the radiator, the heat-conducting component is provided with a temperature sensing component, the first flow path is provided with a driving pump, the driving pump is electrically connected to the temperature sensing component and both are electrically connected to the vehicle's controller, and the controller is suitable for controlling the driving pump to turn on when the temperature sensing component senses that the temperature of the heat-conducting component reaches a first preset value.

[0009] According to the lamp heat dissipation device of the embodiment of the present utility model, the first preset value is t, and satisfies: 80°C≤t≤100°C.

[0010] According to the lamp heat dissipation device of the embodiment of the present invention, the heat conduction component includes a lamp body electric control board and a heat conduction seal, the light-emitting element is electrically connected to the lamp body electric control board, and the lamp body electric control board and the radiator are connected through the heat conduction seal.

[0011] According to the lamp heat dissipation device of an embodiment of the present invention, the thermally conductive seal and the lamp body electronic control board extend along the first direction of the radiator, the light-emitting elements are multiple and the multiple light-emitting elements are spaced apart along the first direction, and the radiator includes multiple heat dissipating fins, and the multiple heat dissipating fins are spaced apart along the first direction.

[0012] According to the lamp heat dissipation device of the embodiment of the present utility model, the liquid outlet and the liquid inlet are arranged on the same side of the radiator along the first direction.

[0013] According to the lamp heat dissipation device of the embodiment of the present utility model, the washing kettle is provided with a kettle body inlet and a kettle body outlet, the position of the kettle body inlet in the washing kettle is higher than the position of the kettle body outlet, and the liquid outlet of the radiator is lower than the liquid inlet.

[0014] According to the lamp heat dissipation device of an embodiment of the present invention, a liquid level sensor is provided in the washing pot, which is electrically connected to the vehicle's controller and is suitable for transmitting a signal to the controller when the liquid level in the washing pot is lower than a preset liquid level, so that the controller issues an instruction to add washing liquid.

[0015] An embodiment of the utility model further discloses a vehicle, comprising the above-mentioned lamp heat dissipation device.

[0016] The advantages of the vehicle described above over the prior art and the advantages of the lamp heat dissipation device described above over the prior art are the same and will not be described in detail here.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a structural schematic diagram of a lamp heat dissipation device according to an embodiment of the utility model.

[0020] Reference numerals:

[0021] Lamp heat dissipation device 100,

[0022] Lamp body 1, photometric lens 11, light-emitting element 12, lamp body electronic control board 13, temperature sensor 131, radiator 14, heat dissipation fins 141, main heat dissipation channel 142, liquid outlet 143, liquid inlet 144, thermally conductive seal 15, washing pot 2, liquid level sensor 21, pot body outlet 22, pot body inlet 23, second flow path 3, second one-way valve 4, first one-way valve 5, first flow path 6, drive pump 61. DETAILED DESCRIPTION

[0023] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0024] Reference below Figure 1 A lamp heat dissipation device 100 according to an embodiment of the present invention is described. A radiator 14 is provided in the lamp body 1. The radiator 14 is provided with a liquid storage chamber. The liquid storage chamber is connected to the washing pot 2 outside the lamp body 1 to realize a heat dissipation cycle between the washing liquid in the washing pot 2 and the radiator 14 to dissipate heat for the light-emitting element 12 of the lamp body 1. The heat of the lamp body 1 can be transferred to the outside of the lamp body 1 to reduce the temperature of the lamp body 1 and prevent the low luminous efficiency of the lamp body 1. At the same time, the heat of the lamp body 1 is applied to the washing pot 2 to prevent the washing pot 2 from freezing and cracking at low temperatures or the washing liquid from freezing at low temperatures.

[0025] like Figure 1 As shown, the heat dissipation device of a lamp of an embodiment of the present invention includes: a lamp body 1, a radiator 14 and a washing pot 2; the radiator 14 is located inside the lamp body 1, a light-emitting element 12 is installed outside the radiator 14, and a cooling flow channel is formed inside the radiator 14; the washing pot 2 is located outside the lamp body 1, and a liquid storage cavity is formed inside the washing pot 2, a cooling flow path is connected between the liquid storage cavity and the cooling flow path, and a circulation loop is formed through the cooling flow path.

[0026] In practice, the lamp body 1 includes an internal light-emitting element 12 and a light distribution mirror 11 on the outside of the lamp body 1. The function of the light distribution mirror 11 of the LED is to refract the parallel light beam reflected by the reflector, so that the road surface and roads in front of the vehicle can be well and evenly illuminated. However, the heat dissipation efficiency of the light distribution mirror 11 of the lamp body 1 is not high, that is, the heat generated by the light-emitting element 12 in the lamp body 1 is difficult to be effectively dissipated. First, a radiator 14 is set in the lamp body 1, and the interior of the radiator 14 is configured as a hollow cooling channel. Liquid can be set in the cooling channel. The washing pot 2 is located outside the lamp body 1, and the cooling channel of the radiator 14 is connected to the vehicle's washing pot 2. The vehicle's washing pot 2 is also called a water spray pot. It is an important component of the car washing system. Its main function is to provide cleaning for the windshield and the vehicle's LED lights through a water spray system, ensuring a clear view and normal use of the vehicle's LED lights in various weather conditions.

[0027] Furthermore, some circulating water can be pre-arranged in the cooling channel. When the temperature of the light-emitting element 12 rises, the circulating water can cool the light-emitting element 12, and the circulating water and the washing pot 2 form a cooling cycle. During the circulation process, the heat of the light-emitting element 12 can be brought to the washing pot 2 through the cooling flow path, and the washing pot 2 can be made to absorb the heat of the light-emitting element 12 under low temperature conditions. The circulating water in the radiator 14 can transfer the heat to the washing pot 2, thereby increasing the temperature of the washing water in the washing pot 2. Then, when the temperature is relatively low in winter, the washing liquid in the washing pot 2 can be prevented from freezing and the washing pot 2 can be prevented from being cracked by freezing.

[0028] That is to say, the heat dissipation device of the lamp in the embodiment of the present invention can not only bring the heat generated by the light-emitting element 12 of the lamp body 1 to the outside of the lamp body 1, but can also be connected with the washing pot 2 of the vehicle to apply the excess heat of the lamp body 1 to the washing pot 2, ensuring that the washing pot 2 and the washing liquid in the washing pot 2 can work normally at low temperatures; thereby, the washing water in the washing pot 2 can clean the windshield of the vehicle and the LED lights of the vehicle, that is, the washing water in the washing pot 2 not only has the function of washing, but also has the function of dissipating heat for the lamp body 1.

[0029] In some embodiments, the cooling flow path includes a first flow path 6 and a second flow path 3. The radiator 14 is provided with a liquid outlet 143 and a liquid inlet 144. The liquid outlet 143 is connected to the washing pot 2 through the first flow path 6, and the liquid inlet 144 is connected to the washing pot 2 through the second flow path 3. A first one-way valve 5 is provided at the liquid outlet 143. The first one-way valve 5 is suitable for being pushed open when the pressure in the radiator 14 is greater than the pressure of the washing pot 2. A second one-way valve 4 is provided at the liquid inlet 144. The height of the washing pot 2 is higher than the height of the radiator 14. The second one-way valve 4 is suitable for opening under the liquid flow pressure of the second flow path 3 when the first one-way valve 5 is opened.

[0030] That is to say, when the liquid flows between the first flow path 6, the second flow path 3, the cooling channel inside the radiator 14 and the liquid storage chamber in the washing pot 2, a circulation loop is formed. The radiator 14 is provided with a liquid outlet 143 and a liquid inlet 144. The liquid in the radiator 14 flows to the washing pot 2 through the first flow path 6, and the washing liquid in the washing pot 2 continues to flow to the radiator 14 through the second flow path 3. The cycle is repeated to take away the heat of the light-emitting element 12 in the lamp body 1, ensuring that the lamp body 1 emits light stably at a suitable temperature, reducing light decay, and ensuring road lighting.

[0031] Furthermore, when the temperature inside the lamp body 1 is high, and at the same time the heat of the light-emitting element 12 is transferred to the radiator 14, the temperature of the radiator 14 increases, thereby increasing the temperature of the circulating water in the radiator 14. At this time, the pressure of the radiator 14 is greater than the pressure in the washing pot 2, and the first one-way valve 5 is pushed open, allowing the liquid to flow from the radiator 14 to the washing pot 2, and the heat is brought into the washing pot 2. After cooling in the washing pot 2 or during the circulation process, it cools down, and when the first one-way valve 5 is pushed open, liquid circulation is formed between the radiator 14 and the washing pot 2. When the first one-way valve 5 is opened, a large amount of liquid in the radiator 14 enters the washing pot 2, and the pressure in the radiator 14 decreases. The height of the washing pot 2 is set higher than the height of the radiator 14. The liquid in the washing pot 2 can push the first one-way valve 5 open under the action of gravity and the flow of liquid in the first flow path 6, thereby forming a preliminary circulation between the radiator 14 and the washing pot 2 under the action of the first flow path 6 and the second flow path 3, thereby cooling the inside of the lamp body 1.

[0032] In some embodiments, a heat-conducting component is connected between the light-emitting element 12 and the radiator 14, and the heat-conducting component is provided with a temperature sensing component 131. The first flow path 6 is provided with a driving pump 61. The driving pump 61 is electrically connected to the temperature sensing component 131 and is both electrically connected to the vehicle's controller. The controller is suitable for controlling the driving pump 61 to open when the temperature sensing component 131 senses that the temperature of the heat-conducting component reaches a first preset value.

[0033] The light emitting element 12 is connected to the heat conducting component. When the light emitting element 12 generates heat, the heat of the light emitting element 12 can be transferred to the radiator 14 through the heat conducting component, and then transferred to the circulating water in the radiator 14. The temperature sensing element 131 is a temperature sensor. When the temperature sensor senses that the temperature of the light emitting element 12 is within a certain range and affects the luminous efficiency of the lamp body 1, the temperature sensor transmits a temperature signal to the controller. The controller controls the driving pump 61 at the liquid outlet of the radiator 14 to open, so that a circulating cooling is formed between the radiator 14 and the washing pot 2, so as to pass the washing water in the washing pot 2. The wash water continuously takes away the heat of the radiator 14, thereby taking away the heat of the light-emitting element 12; therefore, through the setting of the drive pump 61 and the temperature sensor 131, the drive pump 61 can be opened according to actual conditions to achieve efficient circulation cooling between the radiator 14 and the washing pot 2, and under the premise that the temperature reaches the level that affects the luminous efficiency of the light-emitting element 12, and when the above-mentioned pressure difference makes the first one-way valve 5 and the second one-way valve 4 fail to open, the control module can open the drive pump 61 through the temperature sensed by the temperature sensor, thereby achieving normal circulation of the liquid in the washing pot 2 and the radiator 14.

[0034] Furthermore, the temperature sensing component 131 is arranged in the heat-conducting component, and the heat-conducting component is connected to the light-emitting element 12, that is, the distance between the temperature sensing component 131 and the light-emitting element 12 is relatively close, the temperature sensing component 131 is closer to the light-emitting element 12 and senses the temperature of the light-emitting element 12, and the sensed temperature is more accurate. High temperature will aggravate the light decay of the light-emitting element 12 and affect the light-emitting efficiency. Therefore, the controller can control the circulation of the loop in time through the temperature sensing component 131, thereby reducing the risk of light decay of the light-emitting element 12.

[0035] In some embodiments, the first preset value is t, and satisfies: 80°C≤t≤100°C.

[0036] Specifically, the light-emitting element 12 is an LED lamp bead. The luminous efficiency of the LED lamp bead is greatly affected by temperature. When the temperature exceeds 100°C, the luminous efficiency drops significantly. Therefore, when the first preset value is t and satisfies: 80°C≤t≤100°C, that is, when the temperature sensing component 131 senses a temperature greater than 80°C and less than 100°C, the temperature sensor is used in time to turn on the drive pump 61 and form a circulation between the washing pot 2 and the radiator 14, so as to timely reduce the temperature in the lamp body 1, thereby preventing the LED lamp bead temperature from exceeding 100°C and causing a significant drop in luminous efficiency.

[0037] It should be noted that when t is less than 80°C, the drive pump 61 can be started and closed. The temperature at this time will not affect the luminous efficiency of the light-emitting element 12. There is no need to cool the light-emitting element 12 with circulating water, and the heat can be dissipated through normal heat conduction.

[0038] In some embodiments, the heat conduction assembly includes a lamp body electric control board 13 and a heat conduction seal 15 , the light emitting element 12 is electrically connected to the lamp body electric control board 13 , and the lamp body electric control board 13 and the heat sink 14 are connected via the heat conduction seal 15 .

[0039] The main functions of the lamp body electronic control board 13 include providing stable and reliable output voltage, regulating output current, preventing voltage fluctuations from damaging the lamp body 1, adjusting brightness, stepping down voltage, and controlling the on and off of the lamp body 1.

[0040] In addition, the lamp body electronic control board 13 can be set as a copper substrate. The copper substrate has excellent thermal conductivity, high density and mechanical strength. The copper substrate transfers heat to the thermally conductive seal 15. The thermally conductive seal 15 can be a thermal paste. The thermal paste can fill the gap between the copper substrate and the radiator 14, improve the heat dissipation efficiency, and effectively reduce the temperature of the copper substrate and the light-emitting element 12 connected to the copper substrate, thereby extending the service life of the light-emitting element 12 and the copper substrate. That is, the thermal paste can remove the air or gap between the two surfaces to maximize the heat conduction amount, ensuring that the heat can be transferred to the thermally conductive seal 15 through the copper substrate, and then transferred to the radiator 14 through the thermally conductive seal 15. The liquid in the radiator 14 can take away the heat transferred through the thermally conductive seal 15, thereby taking out the heat in the lamp body 1.

[0041] In some embodiments, the thermally conductive seal 15 and the lamp body electronic control board 13 extend along the first direction of the radiator 14, there are multiple light-emitting elements 12 and the multiple light-emitting elements 12 are spaced apart along the first direction, and the radiator 14 includes multiple heat dissipating fins 141, and the multiple heat dissipating fins 141 are spaced apart along the first direction.

[0042] First, there are multiple light emitting elements 12, which ensure sufficient light, and the multiple light emitting elements 12 are connected to the lamp body electric control board 13 along the first direction of the radiator 14 and then connected to the radiator 14. The multiple heat dissipation fins 141 of the radiator 14 are also distributed along the first direction. The first direction can be Figure 1 In the longitudinal direction, the distribution direction of the multiple heat dissipation fins 141 is consistent with the distribution direction of the multiple light-emitting elements 12, and a cooling flow channel is provided in the radiator 14, that is, circulating water is provided in the multiple heat dissipation fins 141, and each light-emitting element 12 can dissipate heat through the circulating water in the heat dissipation fins 141. For example, if there are three light-emitting elements 12, from left to right, the first light-emitting element 12 is located between two adjacent heat dissipation fins 141, and the middle light-emitting element 12 and the last light-emitting element 12 can be distributed at intervals along the first direction according to actual conditions, which can basically ensure that each light-emitting element 12 is cooled by at least two heat dissipation fins 141 close to it, thereby improving the heat dissipation efficiency.

[0043] Furthermore, the radiator 14 includes a plurality of heat dissipation fins 141 and a main heat dissipation channel 142 connected to the plurality of heat dissipation fins 141. When the washing liquid in the washing pot 2 enters the radiator 14 through the liquid inlet 144, it first passes through the main heat dissipation channel 142, and then enters the plurality of heat dissipation fins 141 from the main heat dissipation channel 142, so that the coolant is dispersed to different positions, and multiple light-emitting elements 12 can be cooled at the same time, thereby improving the heat dissipation efficiency.

[0044] In some embodiments, the liquid outlet 143 and the liquid inlet 144 are disposed on the same side of the radiator 14 along the first direction.

[0045] In practice, by arranging the liquid outlet 143 and the liquid inlet 144 of the radiator 14 on the same side of the radiator 14, the washing pot 2 can be arranged on one side of the radiator 14, so that the washing pot 2 can be conveniently connected to the liquid outlet 143 and the liquid inlet 144 of the radiator 14 through the cooling flow path. Moreover, the washing pot 2 is located on one side of the radiator 14, which makes it convenient for the washing pot 2 to wash while reducing the impact of the washing pot 2 on the light source when the lamp body 1 is emitting light.

[0046] In addition, the liquid outlet 143 and the liquid inlet 144 are arranged on the same side of the radiator 14, so that after the circulating water in the washing pot 2 enters the cooling channel of the radiator 14, a large amount of circulating water enters the multiple heat dissipation fins 141, and then flows to the main heat dissipation channel 142 through the multiple heat dissipation fins 141, and finally flows out from the liquid outlet 143 of the main heat dissipation channel 142, thereby effectively dissipating the heat of the radiator 14.

[0047] In some embodiments, the washing kettle 2 is provided with a kettle body inlet 23 and a kettle body outlet 22 . The position of the kettle body inlet 23 in the washing kettle 2 is higher than that of the kettle body outlet 22 , and the liquid outlet 143 of the radiator 14 is lower than the liquid inlet 144 .

[0048] Among them, when the liquid outlet 143 of the radiator 14 is lower than the liquid inlet 144, the circulating water inside the radiator 14 can enter from the upper part of the radiator 14 and flow out from the lower part. At this time, the circulating water flowing out from the lower part is away from the light-emitting element 12, and the circulating water flowing in from the upper part is close to the light-emitting element 12. Then the circulating water flowing in from the upper part can first cool the light-emitting element 12. The circulating water after cooling the light-emitting element 12 absorbs the heat of the light-emitting element 12, and thus flows out from the liquid outlet 143 at the lower part of the radiator 14, thereby improving the heat dissipation efficiency of the radiator 14 to the light-emitting element 12; similarly, the height of the pot body inlet 23 of the washing pot 2 is higher than the height of the pot body outlet 22, and the circulating water enters the washing pot 2 from the pot body inlet 23 of the washing pot 2 and flows out of the washing pot 2 from the pot body outlet 22. The circulating water entering the washing pot 2 has a higher temperature than the original circulating water of the washing pot 2, that is, the water temperature of the upper layer in the washing pot 2 is higher than the water temperature of the lower layer in the washing pot 2.

[0049] Therefore, the circulating water in the lower layer of the washing kettle 2 first enters the radiator 14, that is, the circulating water with a lower water temperature in the washing kettle 2 first enters the radiator 14, thereby improving the heat dissipation efficiency of the radiator 14, and the circulating water in the upper layer can also be gradually cooled under natural cooling so as to continue to enter the radiator 14 for cooling circulation.

[0050] In some embodiments, a liquid level sensor 21 is provided in the washing pot 2. The liquid level sensor 21 is electrically connected to the vehicle controller and is suitable for transmitting a signal to the controller when the liquid level in the washing pot 2 is lower than a preset liquid level, so that the controller issues an instruction to add washing liquid.

[0051] In practice, the liquid level sensing element 21 is a liquid level sensor. When the washing pot 2 washes the windshield and the liquid level drops, the liquid level sensor installed in the washing pot 2 feeds back a signal to the vehicle controller. The vehicle controller controls the instrument cluster indicator light to light up, prompting the user to add washing liquid, thereby ensuring that the washing of the vehicle and the circulation between the washing pot 2 and the radiator 14 can proceed normally, ensuring that sufficient washing liquid is supplied to the radiator 14 and the cooling circulation of the light-emitting element 12, and at the same time making the washing liquid meet the washing requirements for washing structures such as the windshield.

[0052] An embodiment of the present utility model also discloses a vehicle, including the above-mentioned lamp heat dissipation device, a radiator 14 is provided in the lamp body 1, and the radiator 14 is provided with a cooling channel, which connects the cooling channel with the liquid storage cavity of the washing pot 2 outside the lamp body 1, so as to realize the heat dissipation circulation between the washing liquid in the washing pot 2 and the radiator 14, so as to dissipate heat for the light-emitting element 12 of the lamp body 1, and can transfer the heat of the lamp body 1 to the outside of the lamp body 1, reduce the temperature of the lamp body 1, and prevent the low luminous efficiency of the lamp body 1, and at the same time apply the heat of the lamp body 1 to the washing pot 2, so as to prevent the washing pot 2 from freezing and cracking at low temperature or the washing liquid from freezing at low temperature, so that the vehicle windshield or the lamp body 1 can be normally flushed, and the heat dissipation of the lamp body 1 can be ensured.

[0053] 1. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0054] 2. In the description of this utility model, "first feature" and "second feature" may include one or more of these features.

[0055] 3. In the description of this utility model, “multiple” means two or more.

[0056] 4. In the description of the present invention, a first feature being “above” or “below” a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature therebetween.

[0057] 5. In the description of the present utility model, the first feature “above”, “above” and “above” the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0058] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A lamp heat dissipation device, characterized in that: include: Lamp body (1); a heat sink (14), the heat sink (14) being located inside the lamp body (1), a light-emitting element (12) being mounted outside the heat sink (14), and a cooling channel being formed inside the heat sink (14); A washing pot (2) is located outside the lamp body (1), and a liquid storage cavity is formed in the washing pot (2). A cooling flow path is connected between the liquid storage cavity and the cooling flow channel, and a circulation loop is formed through the cooling flow path.

2. The lamp heat dissipation device according to claim 1, characterized in that: The cooling flow path includes a first flow path (6) and a second flow path (3); the radiator (14) is provided with a liquid outlet (143) and a liquid inlet (144); the liquid outlet (143) is connected to the washing pot (2) through the first flow path (6); and the liquid inlet (144) is connected to the washing pot (2) through the second flow path (3); A first one-way valve (5) is provided at the liquid outlet (143), and the first one-way valve (5) is suitable for being pushed open when the pressure in the radiator (14) is greater than the pressure in the washing pot (2). A second one-way valve (4) is provided at the liquid inlet (144), and the height of the washing pot (2) is higher than the height of the radiator (14). The second one-way valve (4) is suitable for opening under the liquid flow pressure of the second flow path (3).

3. The lamp heat dissipation device according to claim 2, characterized in that: A heat conduction component is connected between the light emitting element (12) and the radiator (14), the heat conduction component is provided with a temperature sensing component (131), the first flow path (6) is provided with a driving pump (61), the driving pump (61) is electrically connected to the temperature sensing component (131) and both are electrically connected to a controller of a vehicle, and the controller is adapted to control the driving pump (61) to turn on when the temperature sensing component (131) senses that the temperature of the heat conduction component reaches a first preset value.

4. The lamp heat dissipation device according to claim 3, characterized in that: The first preset value is t, and satisfies: 80°C≤t≤100°C.

5. The lamp heat dissipation device according to claim 3, characterized in that: The heat-conducting assembly comprises a lamp body electric control board (13) and a heat-conducting seal (15); the light-emitting element (12) is electrically connected to the lamp body electric control board (13); and the lamp body electric control board (13) and the heat sink (14) are connected via the heat-conducting seal (15).

6. The lamp heat dissipation device according to claim 5, characterized in that: The heat-conductive seal (15) and the lamp body electric control board (13) extend along a first direction of the radiator (14); the light-emitting elements (12) are multiple and the multiple light-emitting elements (12) are spaced apart along the first direction; the radiator (14) includes multiple heat-dissipating fins (141); and the multiple heat-dissipating fins (141) are spaced apart along the first direction.

7. The lamp heat dissipation device according to claim 6, characterized in that: The liquid outlet (143) and the liquid inlet (144) are arranged on the same side of the radiator (14) along the first direction.

8. The lamp heat dissipation device according to claim 2, characterized in that: The washing kettle (2) is provided with a kettle body inlet (23) and a kettle body outlet (22); the position of the kettle body inlet (23) in the washing kettle (2) is higher than the position of the kettle body outlet (22); and the liquid outlet (143) of the radiator (14) is lower than the liquid inlet (144).

9. The lamp heat dissipation device according to claim 1, characterized in that: A liquid level sensor (21) is provided in the washing pot (2), and the liquid level sensor (21) is electrically connected to a vehicle controller and is adapted to transmit a signal to the controller when the liquid level in the washing pot (2) is lower than a preset liquid level, so that the controller issues an instruction to add washing liquid.

10. A vehicle, characterized in that: The lamp heat dissipation device comprises the lamp heat dissipation device according to any one of claims 1 to 9.

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