Immersed cooling tunnel lighting lamp

Abstract

The utility model discloses an immersed cooling tunnel lighting lamp which comprises a lower box body, an upper box body is arranged on the top of the lower box body in a sealed mode, a liquid cooling working medium is arranged in the lower box body, and an electronic assembly and a light-transmitting plate are sequentially arranged in the lower box body from top to bottom. The lower box body is communicated with the upper box body, the top of the upper box body is provided with a heat transfer mechanism, the heat transfer mechanism expands after the liquid cooling working medium is gasified, and heat is transferred to the wall face of the tunnel to achieve heat dissipation. According to the tunnel lighting lamp, an immersed two-phase cooling method is adopted, heat of the lamp is absorbed through phase change of a liquid cooling working medium, and the heat is transmitted to the wall face of a tunnel through the expansion effect; the radiating efficiency is high, the lamp holder temperature rise is small, and the manufacturing cost is low; the technical problem of heat dissipation of the high-power and high-power-density LED lamp is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED lighting fixtures, and particularly relates to an immersion cooling tunnel lighting fixture. Background Technique

[0002] The electro-optical conversion efficiency of LED is about 20%-30%, and the remaining 70%-80% of the energy is mainly converted into heat. High-power and high-power-density LED lamps must solve the heat dissipation problem, otherwise it will cause the junction temperature of the LED chip to rise, bringing problems such as spectral change, light efficiency reduction, and shortened lifespan. Content of the Utility Model

[0003] The purpose of the utility model is to provide an immersion cooling tunnel lighting fixture, which adopts the immersion two-phase cooling method, uses the phase change of the liquid cooling working medium to absorb the heat of the lamp, and transfers the heat to the tunnel wall through the expansion effect, solving the heat dissipation technical problem of high-power and high-power-density LED lamps.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an immersion cooling tunnel lighting fixture, including a lower box body, the top of the lower box body is hermetically provided with an upper box body, the inside of the lower box body is provided with a liquid cooling working medium, the inside of the lower box body is successively provided with electronic components and a light-transmitting plate from top to bottom, and the electronic components and the light-transmitting plate are immersed in the liquid cooling working medium, the lower box body communicates with the upper box body, the top of the upper box body is provided with a heat transfer mechanism, and the heat transfer mechanism expands after the liquid cooling working medium is vaporized, transferring the heat to the tunnel wall to achieve heat dissipation; the lamp of the utility model adopts the immersion two-phase cooling method, uses the phase change of the liquid cooling working medium to absorb the heat of the lamp, and discharges it in the form of gas to the heat transfer mechanism, the heat transfer mechanism expands, and then the heat transfer mechanism contacts the tunnel wall to transfer the heat to the tunnel wall, thereby achieving heat dissipation.

[0005] Preferably, the upper box body is also provided with mounting holes and exhaust ports; there are multiple mounting holes, and the multiple mounting holes are evenly arranged on the top of the upper box body. To solve the problem that the assembly error of the lamp on the tunnel and the unevenness of the tunnel wall surface cause the heat transfer mechanism to not smoothly contact the tunnel wall surface, a heat transfer mechanism is slidably installed on each mounting hole, and the exhaust port is located outside the upper box body.

[0006] Preferably, the heat transfer mechanism includes a cavity, a film, a sealing ring and a top ring; the cavity is slidably installed in the mounting hole on the top of the upper box body, and a sealing ring is arranged between the mounting hole and the cavity, a film is arranged at the port of the cavity located outside the upper box body; a top ring for limiting is arranged at the edge of the port of the cavity located inside the upper box body. Through the vaporization of the liquid cooling working medium, the film expands and fits with the tunnel wall, and the heat is transferred to the tunnel wall surface, improving the heat dissipation efficiency.

[0007] Preferably, the film is fixed to the cavity port by a compression ring to ensure the sealing performance at the connection between the film and the cavity.

[0008] Preferably, since the liquid cooling working medium will be consumed after long-term use, to ensure that there is a sufficient amount of liquid cooling working medium in the lamp; a liquid storage structure for replenishing the liquid cooling working medium is provided inside the upper box body.

[0009] Preferably, the liquid storage structure includes a liquid storage box, a cover plate, a compression magnet, a liquid storage bag and a liquid outlet pipe; the liquid storage box is fixed to one side of the inner wall of the upper box body, the cover plate is fixed to the top of the liquid storage box, the liquid storage bag is located inside the liquid storage box, a compression magnet for squeezing the liquid storage bag is movably arranged on one side of the liquid storage bag, the liquid outlet pipe is located on the other side of the liquid storage box, and the liquid outlet pipe is communicated with the liquid storage bag for squeezing out the liquid cooling working medium in the liquid storage bag; since the space formed by the upper box body and the lower box body is a sealed space and the installation position of the lamp in the tunnel is relatively high, it is not convenient to replenish the liquid. To facilitate the replenishment of the liquid, a magnet can be used outside the sealed space in the present utility model. Using the principle of magnetic repulsion, the compression magnet in the liquid storage box is pushed to roll in the liquid storage box, the compression magnet squeezes the liquid storage bag, and the liquid cooling working medium in the liquid storage bag flows out, thereby replenishing the liquid cooling working medium in the sealed space.

[0010] Preferably, the lower box body includes a frame body, a liquid level viewing window, a liquid injection port and a wire lead-out port. The light-transmitting plate is located at the bottom of the frame body and is hermetically connected. The liquid level viewing window is arranged on the outer surface of the frame body to facilitate observing the height and remaining amount of the liquid cooling working medium level in the frame body. The liquid injection port is arranged on the outer surface of the frame body and is communicated with the inside of the frame body. The wire lead-out port is arranged at the edge of the frame body; to facilitate leading out the cable.

[0011] Preferably, the electronic component includes a mounting frame, a lamp head circuit component, a reflector and a power supply component. The mounting frame is located inside the frame body. The lamp head circuit component and the reflector are mounted on the mounting frame. The power supply component is fixedly mounted on the edge of the mounting frame. A cable is connected to the power supply component, and the cable extends to the outside of the lower box body through the wire lead-out port.

[0012] Preferably, the lamp head circuit component includes a lamp head circuit board, a lamp head and a hole. The lamp head circuit board is inclinedly mounted on the mounting frame; on the one hand, it can make the light irradiate along the vehicle driving direction to avoid glare; on the other hand, the inclination of the lamp head and the lamp head circuit board can facilitate the detachment of the bubbles generated after the liquid cooling working medium vaporizes, and expand by using the heat transfer mechanism, further improving the heat transfer effect; the lamp head is fixedly mounted on the lamp head circuit board, and holes corresponding to the lamp head are arranged on the lamp head circuit board.

[0013] Preferably, symmetrically extending lifting pieces are provided on both sides of the outer surface of the housing, and threaded round holes are provided in the lifting pieces to facilitate the lifting of the lamp body.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: The tunnel lighting fixture of the present utility model adopts an immersion two-phase cooling method, utilizes the phase change of the liquid cooling working medium to absorb the heat of the fixture, and transfers the heat to the tunnel wall surface through the expansion effect; it has high heat dissipation efficiency, small temperature rise of the lamp head, and low manufacturing cost; it solves the heat dissipation technical problem of high-power and high-power density LED fixtures;

[0015] Through a plurality of heat transfer structures slidably designed on the upper box body, the assembly error of the fixture on the tunnel and the inconsistent flatness of the tunnel wall surface can be compensated, and the problem that the heat transfer mechanism cannot smoothly contact the tunnel wall surface is solved;

[0016] By designing a liquid storage structure for supplementing the liquid cooling working medium in the upper box body; ensuring that there is a sufficient amount of liquid cooling working medium in the fixture;

[0017] And the liquid storage structure utilizes the principle of magnetic repulsion to push the compression magnet in the liquid storage box to roll in the liquid storage box, the compression magnet squeezes the liquid storage bag, and the liquid cooling working medium in the liquid storage bag flows out, thereby supplementing the liquid cooling working medium in the sealed space, and the liquid supplement is more convenient;

[0018] By obliquely installing the lamp head circuit board on the installation frame, the light can be irradiated along the vehicle driving direction to avoid glare; on the other hand, the inclination of the lamp head and the lamp head circuit board facilitates the detachment of the bubbles generated after the vaporization of the liquid cooling working medium, and utilizes the expansion of the heat transfer mechanism to further improve the heat transfer effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an exploded schematic view of the present utility model.

[0020] Figure 2 It is a schematic structural diagram of the electronic components of the present utility model.

[0021] Figure 3 It is a schematic cross-sectional structure view of the whole lamp of the present utility model.

[0022] Figure 4 It is a schematic enlarged partial structure view at A of the present utility model.

[0023] Figure 5 It is a schematic cross-sectional structure view of the heat transfer mechanism of the present utility model.

[0024] Figure 6 It is a schematic enlarged partial structure view at C of the present utility model.

[0025] Figure 7This is a schematic structural diagram of the heat transfer mechanism of the present utility model.

[0026] Figure 8 This is a schematic diagram of a partial internal structure of the electronic component of the present utility model.

[0027] Figure 9 This is an enlarged schematic structural diagram of part B of the present utility model.

[0028] Figure 10 This is a front view structural diagram of the entire lamp of the present utility model.

[0029] Figure 11 This is a schematic structural diagram of the liquid storage cavity of the present utility model.

[0030] 1. Lower box body; 101. Frame body; 102. Liquid level viewing window; 103. Liquid injection port; 104. Wire lead-out port; 2. Transparent plate; 3. Electronic component; 301. Installation frame; 302. Lamp head circuit component; 302a. Lamp head circuit board; 302b. Lamp head; 302c. Hole; 303. Reflector; 304. Power supply component; 304a. Cable; 4. Upper box body; 401. Installation hole, 403. Exhaust port, 404. Liquid storage box; 405. Cover plate; 406. Compression magnet; 407. Liquid storage bag; 408. Liquid outlet; 5. Heat transfer mechanism; 501. Cavity; 502. Pressing ring; 503. Film; 504. Sealing ring; 505. Top ring. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Embodiment 1

[0033] Please refer to Figure 1 , Figure 5 , Figure 6 , Figure 7 , Figure 10 and Figure 11 , an immersion cooling tunnel lighting fixture, including a lower box body 1, the top of the lower box body 1 is hermetically provided with an upper box body 4, a liquid cooling working medium is arranged inside the lower box body 1, an electronic component 3 and a transparent plate 2 are sequentially arranged from top to bottom inside the lower box body 1, and the electronic component 3 and the transparent plate 2 are immersed in the liquid cooling working medium. The lower box body 1 communicates with the upper box body 4, and a heat transfer mechanism 5 is arranged at the top of the upper box body 4. After the liquid cooling working medium vaporizes, the heat transfer mechanism 5 expands and transfers heat to the tunnel wall surface to achieve heat dissipation;

[0034] Specifically, in this embodiment, the specific structures of the upper box body and the lower box body are as follows:

[0035] The upper box body 4 is provided with mounting holes 401 and exhaust ports 403; there are multiple mounting holes 401, and the multiple mounting holes 401 are evenly arranged on the top of the upper box body 4, and a heat transfer mechanism 5 is slidably mounted on each mounting hole, and the exhaust port 403 is located outside the upper box body 4.

[0036] The lower box body 1 includes a frame body 101, a liquid level viewing window 102, a liquid injection port 103 and a wire lead-out port 104. The light-transmitting plate 2 is located at the bottom of the frame body 101 and is hermetically connected. The liquid level viewing window 102 is arranged on the outer surface of the frame body 101. The liquid injection port 103 is arranged on the outer surface of the frame body 101 and is communicated with the inside of the frame body 101. The wire lead-out port 104 is arranged at the edge of the frame body 101; symmetrically extending lifting pieces are arranged on both sides of the outer surface of the frame body 101, and threaded round holes are provided on the lifting pieces.

[0037] Specifically, in this embodiment, the specific structure of the heat transfer mechanism is as follows:

[0038] The heat transfer mechanism 5 includes a cavity 501, a thin film 503, a sealing ring 504 and a top ring 505; the cavity 501 is slidably mounted in the mounting hole 401 on the top of the upper box body 4, and a sealing ring 504 is arranged between the mounting hole 401 and the cavity 501. A thin film 503 is arranged at the port of the cavity 501 located outside the upper box body 4, and the thin film 503 is fixed to the cavity 501 through a compression ring 502; a top ring 505 for limiting is arranged at the edge of the port of the cavity 501 located inside the upper box body 4.

[0039] The basic principle of the heat dissipation of this lamp is as follows: Since the electronic components 3 and the light-transmitting plate 2 are immersed in the liquid cooling working medium, after the electronic components 3 generate heat, the liquid cooling working medium absorbs the heat and undergoes a phase change to be converted into a gas. The gas causes the thin film 503 to expand and contact the tunnel wall surface and transfer the heat to the tunnel wall surface, solving the heat dissipation technical problem of high-power and high-power-density LED lamps, making the lamp have high heat dissipation efficiency, small temperature rise of the lamp head and low manufacturing cost.

[0040] Since the cavity 501 is slidably mounted on the mounting hole 401, when the thin film 503 cannot contact the tunnel wall surface only by relying on the expansion of the thin film 503, the sliding fit of the cavity 501 on the mounting hole 401 can also be utilized to drive the entire heat transfer mechanism 5 to move towards the tunnel wall surface in the mounting hole 401 until the thin film 503 contacts the tunnel wall surface.

[0041] Since a top ring is arranged at the port of the cavity 501 of the heat transfer mechanism 5 located inside the upper box body 4, it can also provide a limit for the sliding of the cavity 501 on the mounting hole 401.

[0042] Example 2

[0043] Please refer to Figure 2 、 Figure 4 、 Figure 8 and Figure 9 Based on Example 1, since the electronic component 3 is entirely immersed in the liquid cooling working medium, the structure of the electronic component 3 is optimized in this example:

[0044] Specifically, the electronic component 3 includes a mounting frame 301, a lamp head circuit component 302, a reflector 303, and a power supply component 304. The mounting frame 301 is located inside the housing 101. The lamp head circuit component 302 and the reflector 303 are mounted on the mounting frame 301. The power supply component 304 is fixedly mounted on the edge of the mounting frame 301. A cable 304a is connected to the power supply component 304, and the cable 304a extends to the outside of the lower housing 1 through the wire outlet 104;

[0045] Among them, the lamp head circuit component 302 includes a lamp head circuit board 302a, a lamp head 302b, and a hole 302c. The lamp head circuit board 302a is inclinedly mounted on the mounting frame 301. The lamp head 302b is fixedly mounted on the lamp head circuit board 302a. A hole 302c corresponding to the lamp head 302b is provided on the lamp head circuit board 302a. The inclined mounting of the lamp head circuit board 302a can, on the one hand, make the light irradiate along the vehicle driving direction to avoid glare; on the other hand, the inclination of the lamp head 302b and the lamp head circuit board 302a can facilitate the detachment of the bubbles generated after the vaporization of the liquid cooling working medium, and the heat transfer mechanism expands due to the expansion, further improving the heat transfer effect.

[0046] When the lamp head 302b is energized and emits light, the temperature rises, and the heat is transferred to the liquid cooling working medium; the liquid cooling working medium near the lamp head 302b absorbs the heat of the lamp head 302b and transfers the heat to the surrounding liquid cooling working medium; when the temperature of the liquid cooling working medium near the lamp head 302b reaches the boiling point, a vaporization phenomenon occurs, and the liquid cooling working medium changes from a liquid to a gas and continues to absorb the heat dissipated by the lamp head 302b; the vaporized liquid cooling working medium forms bubbles, detaches from near the lamp head, and moves in the opposite direction of gravity, causing the film 503 of the heat transfer mechanism 5 to expand and driving the heat transfer mechanism to move upward; then the film 503 contacts the tunnel wall surface; the heat is transferred from the film 503 to the tunnel wall surface, and the heat is dissipated to the tunnel wall surface; at this time, the temperature of the gaseous liquid cooling working medium near the film 503 drops and condenses into a liquid, and finally drips into the lower housing 1.

[0047] Example 3

[0048] Please refer to Figure 3 and Figure 11, on the basis of Embodiment 1, a liquid storage structure for supplementing the liquid cooling working medium is added; specifically, the liquid storage structure includes a liquid storage box 404, a cover plate 405, a compression magnet 406, a liquid storage bag 407 and a liquid outlet pipe 408; the liquid storage box 404 is fixed on one side of the inner wall of the upper box body 4, the cover plate 405 is fixed on the top of the liquid storage box 404, the liquid storage bag 407 is located inside the liquid storage box 404, a compression magnet 406 for squeezing the liquid storage bag 407 is movably arranged on one side of the liquid storage bag 407, the liquid outlet pipe 408 is located on the other side of the liquid storage box 404, and the liquid outlet pipe 408 is communicated with the liquid storage bag 407 for squeezing out the liquid cooling working medium in the liquid storage bag 407; the compression magnet 406 in the liquid storage box 404 is pushed to roll in the liquid storage box 404, the compression magnet 406 squeezes the liquid storage bag 407, and the liquid cooling working medium in the liquid storage bag 407 flows out, so as to supplement the liquid cooling working medium in the sealed space and avoid the problem of poor heat dissipation effect after the liquid cooling working medium in the lower box body 1 decreases.

[0049] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An immersion cooling tunnel lighting fixture, comprising a lower box body (1), characterized in that: The top of the lower box body (1) is sealed with an upper box body (4), a liquid cooling medium is arranged inside the lower box body (1), an electronic component (3) and a light-transmitting plate (2) are arranged in sequence from top to bottom inside the lower box body (1), and the electronic component (3) and the light-transmitting plate (2) are immersed in the liquid cooling medium, the lower box body (1) and the upper box body (4) are interconnected, and a heat transfer mechanism (5) is arranged on the top of the upper box body (4), and the heat transfer mechanism (5) expands after the liquid cooling medium is gasified and contacts with the tunnel wall surface, thereby transferring heat to the tunnel wall surface to achieve heat dissipation.

2. The immersion cooling tunnel lighting fixture according to claim 1, characterized in that: The upper box body (4) is also provided with a mounting hole (401) and an exhaust port (403); a plurality of mounting holes (401) are provided, and the plurality of mounting holes (401) are evenly arranged on the top of the upper box body (4), a heat transfer mechanism (5) is slidably mounted on each mounting hole, and the exhaust port (403) is located on the outside of the upper box body (4).

3. The immersion cooling tunnel lighting fixture according to claim 2, characterized in that: The heat transfer mechanism (5) comprises a cavity (501), a film (503), a sealing ring (504) and a top ring (505); the cavity (501) is slidably mounted on a mounting hole (401) at the top of the upper box body (4), and a sealing ring (504) is provided between the mounting hole (401) and the cavity (501); a film (503) is provided at a port of the cavity (501) located outside the upper box body (4); and a top ring (505) for limiting is provided at an edge of a port of the cavity (501) located inside the upper box body (4).

4. The immersion cooling tunnel lighting fixture according to claim 3, characterized in that: The film (503) is fixed to the port of the cavity (501) through a pressure ring (502).

5. The immersion cooling tunnel lighting fixture according to claim 1, characterized in that: The upper box body (4) is provided with a liquid storage structure for replenishing liquid cooling medium.

6. The immersion cooling tunnel lighting fixture according to claim 5, characterized in that: The liquid storage structure comprises a liquid storage box (404), a cover plate (405), a compression magnet (406), a liquid storage bag (407) and a liquid outlet pipe (408); the liquid storage box (404) is fixed to one side of the inner wall of the upper box body (4), the cover plate (405) is fixed to the top of the liquid storage box (404), the liquid storage bag (407) is located inside the liquid storage box (404), one side of the liquid storage bag (407) is movably provided with a compression magnet (406) for squeezing the liquid storage bag (407), the liquid outlet pipe (408) is located on the other side of the liquid storage box (404), and the liquid outlet pipe (408) is connected to the liquid storage bag (407) and is used to squeeze out the liquid cooling medium in the liquid storage bag (407).

7. The immersion cooling tunnel lighting fixture according to claim 1, characterized in that: The lower box body (1) comprises a frame body (101), a liquid level window (102), a liquid injection port (103) and a wire lead-out port (104); the light-transmitting plate (2) is located at the bottom of the frame body (101) and is sealed and connected thereto; the liquid level window (102) is arranged on the outer surface of the frame body (101); the liquid injection port (103) is arranged on the outer surface of the frame body (101), and the liquid injection port (103) is connected to the inside of the frame body (101); and the wire lead-out port (104) is arranged at the edge of the frame body (101).

8. The immersion cooling tunnel lighting fixture according to claim 7, characterized in that: The electronic component (3) comprises a mounting frame (301), a lamp holder circuit component (302), a reflector (303) and a power supply component (304); the mounting frame (301) is located inside the frame body (101); the lamp holder circuit component (302) and the reflector (303) are mounted on the mounting frame (301); the power supply component (304) is fixedly mounted on the edge of the mounting frame (301); a cable (304a) is connected to the power supply component (304), and the cable (304a) extends to the outside of the lower box body (1) through a wire lead-out port (104).

9. The immersion cooling tunnel lighting fixture according to claim 8, characterized in that: The lamp holder circuit assembly (302) comprises a lamp holder circuit board (302a), a lamp holder (302b) and a hole (302c); the lamp holder circuit board (302a) is obliquely mounted on the mounting frame (301); the lamp holder (302b) is fixedly mounted on the lamp holder circuit board (302a); and the lamp holder circuit board (302a) is provided with a hole (302c) corresponding to the lamp holder (302b).

10. The immersion cooling tunnel lighting fixture according to claim 7, characterized in that: Mutually symmetrical extended hanging pieces are arranged on both sides of the outer surface of the frame (101), and threaded circular holes are provided on the hanging pieces.

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