Backlight source with heat dissipation structure for rearview mirror

Abstract

The utility model provides a rearview mirror backlight source with a heat dissipation structure, and relates to the technical field of rearview mirror backlight sources. A rearview mirror backlight source with a heat dissipation structure comprises an outer frame, a bottom shell, mirror glass, a liquid crystal panel, a light guide plate and a lamp strip, the light guide plate is installed in the bottom shell, the liquid crystal panel is installed on the light guide plate, the mirror glass is installed on the liquid crystal panel, the lamp strip is installed in the outer frame and flush with the light guide plate, the outer frame is installed on the bottom shell, and the light guide plate is installed on the bottom shell. The mirror glass, the liquid crystal panel and the light guide plate are all located between the bottom shell and the outer frame. Heat on the light guide plate is absorbed through the surrounding frame and transmitted to the heat dissipation plate, the heat dissipation plate transmits the heat to the bottom shell, the heat can be quickly transmitted to the outer side through the honeycomb frame through the heat dissipation plate of the hexagonal honeycomb structure and the heat dissipation protruding strips, and the heat dissipation effect is achieved.

Description

Technical Field

[0001] The utility model provides a backlight source for a rearview mirror with a heat dissipation structure, and relates to the technical field of backlight sources for rearview mirrors. Background Art

[0002] The rearview mirror is a tool for the driver to directly obtain external information such as the rear, side and bottom of the car while sitting in the driver's seat. In order to facilitate the driver's operation, prevent traffic accidents and ensure personal safety, all countries have stipulated that rearview mirrors must be installed on cars, and all rearview mirrors must be able to adjust the direction. The interior rearview mirror is a mirror that can confirm the rear scene without changing the forward line of sight too much while driving.

[0003] The existing electronic rearview mirror in the car has electronic components. When the air conditioner is not turned on in the car, the electrical components in the rearview mirror are prone to heat up. However, the existing rearview mirror has poor heat dissipation effect, which can easily cause the internal electronic components to burn out, making the rearview mirror unable to display images.

[0004] Therefore, it is necessary to provide a backlight source for a rearview mirror with a heat dissipation structure, so that the heat generated by the rearview mirror can be quickly dissipated through the heat dissipation component. Utility Model Content

[0005] In order to overcome the shortcomings of the existing in-vehicle electronic rearview mirror, which has poor heat dissipation effect and easily causes the internal electronic components to burn out, making the rearview mirror unable to display images, the utility model provides a backlight source for a rearview mirror with a heat dissipation structure, which can quickly dissipate the heat generated by the rearview mirror through a heat dissipation component.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions: a backlight source for a rearview mirror with a heat dissipation structure, comprising an outer frame, a bottom shell, mirror glass, a liquid crystal panel, a light guide plate and a light strip, a light guide plate is installed in the bottom shell, a liquid crystal panel is installed on the light guide plate, mirror glass is installed on the liquid crystal panel, a light strip is installed in the outer frame, the light strip is flush with the light guide plate, the outer frame is installed on the bottom shell, the mirror glass, the liquid crystal panel and the light guide plate are all located between the bottom shell and the outer frame, and also includes a heat dissipation component for dissipating heat for the rearview mirror, the heat dissipation component comprises a surrounding frame, a heat dissipation plate and heat dissipation convex strips, a heat dissipation plate is installed in the bottom shell, a surrounding frame is installed on the heat dissipation plate, the surrounding frame wraps the light guide plate, and the heat dissipation convex strips are fixedly connected to the bottom shell.

[0007] Furthermore, the heat dissipation ribs and the heat dissipation plates are both hexagonal honeycomb structures.

[0008] Furthermore, it also includes a support frame installed on the bottom shell, a fan is rotatably arranged in the support frame, a plurality of air guide holes are opened on the bottom shell, and the air guide holes and the support frame are connected to each other and are connected to an air guide pipe.

[0009] Furthermore, it also includes a support column fixedly connected to the bottom shell, a plurality of sliding grooves are opened on the bottom shell, and a limit frame is slidably arranged on the sliding grooves and the support column. An elastic member is wound around the support column, and both ends of the elastic member are fixedly connected to the support column and the limit frame respectively.

[0010] Furthermore, a sealing gasket is sleeved on the edge of the outer frame.

[0011] Furthermore, a plurality of supporting points are fixedly connected to the bottom shell.

[0012] Compared with the prior art, the backlight source for the rearview mirror provided by the embodiment of the utility model has the following advantages: 1. The heat on the light guide plate is absorbed by the surrounding frame and transferred to the heat sink, and the heat sink transfers the heat to the bottom shell. Through the heat sink and heat sink ridges with a hexagonal honeycomb structure, the heat can be quickly transferred to the outside through the honeycomb frame to achieve the heat dissipation effect.

[0013] 2. The fan is started to blow air to the outer surface of the bottom shell to dissipate heat. At the same time, under the blowing action of the fan, negative pressure is generated in the support frame area. At this time, the heat in the bottom shell is absorbed through the air duct, so that the hot air is dissipated outward, achieving the effect of accelerating heat dissipation.

[0014] 3. Pull the limit frame through the elastic part to slide along the side of the support column box away from the bottom shell, so that the limit frame can clamp the mirror glass, liquid crystal panel and light guide plate together and press them into the bottom shell. When the outer frame is removed from the bottom shell, it can prevent the internal components from falling out and being damaged, thereby preventing the backlight module from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a schematic diagram of the three-dimensional exploded structure of the outer frame, mirror glass and liquid crystal panel of the utility model.

[0017] Figure 3 It is a schematic diagram of the three-dimensional exploded structure of the bottom shell, surrounding frame and heat dissipation plate of the utility model.

[0018] Figure 4 It is a three-dimensional structural schematic diagram of the support frame, fan and air guide duct of the utility model.

[0019] Figure 5 It is a three-dimensional cross-sectional structural schematic diagram of the outer frame, support columns and limiting frame of the utility model.

[0020] Figure 6 It is a three-dimensional structural schematic diagram of the bottom shell and the sealing gasket of the utility model.

[0021] Explanation of the reference numerals: 1: outer frame, 101: bottom shell, 2: mirror glass, 3: liquid crystal panel, 4: light guide plate, 5: light strip, 6: heat dissipation assembly, 601: surrounding frame, 602: heat dissipation plate, 603: heat dissipation ridge, 7: support frame, 8: fan, 9: air guide duct, 901: air guide hole, 10: sliding groove, 11: support column, 12: limit frame, 13: elastic member, 14: sealing pad, 15: support point. DETAILED DESCRIPTION

[0022] The embodiments of the present invention will be described below with reference to the accompanying drawings.

[0023] Embodiment 1: A backlight source for a rearview mirror with a heat dissipation structure, see Figure 1-Figure 3 As shown, it includes an outer frame 1, a bottom shell 101, a mirror glass 2, a liquid crystal panel 3, a light guide plate 4 and a light strip 5. The light guide plate 4 is installed in the bottom shell 101 by bolt connection, the liquid crystal panel 3 is installed on the light guide plate 4 by bonding, the mirror glass 2 is installed on the liquid crystal panel 3 by bonding, the light strip 5 is installed in the outer frame 1 by bolt connection, the light strip 5 is flush with the light guide plate 4, the outer frame 1 is installed on the bottom shell 101 by snap connection, the mirror glass 2, the liquid crystal panel 3 and the light guide plate 4 are all located between the bottom shell 101 and the outer frame 1, and the mirror glass 2, the liquid crystal panel 3 and the light guide plate 4 are located between the bottom shell 101 and the outer frame 1. The heat dissipation component 6 includes a surrounding frame 601, a heat dissipation plate 602 and a heat dissipation ridge 603. The heat dissipation plate 602 for heat dissipation is installed in the bottom shell 101 by bolt connection. The surrounding frame 601 for heat conduction is installed on the heat dissipation plate 602 by bonding. The surrounding frame 601 wraps the light guide plate 4. The heat dissipation ridge 603 is fixed to the bottom of the bottom shell 101. The bottom shell 101 and the heat dissipation ridge 603 are integrally formed. The heat dissipation ridge 603 and the heat dissipation plate 602 are both hexagonal honeycomb structures, and the heat dissipation effect is excellent.

[0024] When the rearview mirror needs to be used, the light strip 5 is connected to a power source to make the light strip 5 light up, and the light guide plate 4 reflects the light projected by the light strip 5 on the liquid crystal panel 3, and the liquid crystal panel 3 is protected by the mirror glass 2; when heat is generated inside the rearview mirror, the surrounding frame 601 absorbs the heat on the light guide plate 4 and transfers it to the heat sink 602, and the heat sink 602 transfers the heat to the bottom shell 101 and quickly dissipates the heat through the heat dissipation ridges 603 on the bottom shell 101. The heat sink 602 and the heat dissipation ridges 603 use a hexagonal honeycomb structure, and the heat can be quickly transferred to the outside through the honeycomb frame.

[0025] Example 2: Based on Example 1, refer to Figure 4As shown, it also includes two support frames 7 installed on both sides of the bottom of the bottom shell 101 by welding, and a fan 8 for heat dissipation is rotatably arranged in the support frame 7. A plurality of air guide holes 901 are opened on both sides of the bottom shell 101, and the air guide holes 901 are connected to the support frame 7 and are connected to an air guide pipe 9.

[0026] When heat is generated in the bottom shell 101, the fan 8 is started to blow air to the outer surface of the bottom shell 101 to dissipate heat. At the same time, under the blowing action of the fan 8, negative pressure is generated in the support frame 7 area. At this time, the heat in the bottom shell 101 is absorbed through the air duct 9 and the hot air is dissipated outward.

[0027] See also Figure 5 As shown, it also includes a plurality of support columns 11 fixedly connected to the bottom of the bottom shell 101 by welding. The bottom shell 101 and the support columns 11 are integrally formed. A plurality of sliding grooves 10 are opened on the bottom shell 101. The sliding grooves 10 correspond to the support columns 11 one by one. The sliding grooves 10 and the support columns 11 are jointly slidably provided with a limit frame 12 for fixing the backlight module in the bottom shell 101. An elastic member 13 is wound around the support column 11. The two ends of the elastic member 13 are respectively fixedly connected to the support column 11 and the limit frame 12 by welding.

[0028] Under the pulling force of the elastic member 13, the elastic member 13 pulls the limit frame 12 to slide along the side of the support column 11 box away from the bottom shell 101, so that the limit frame 12 clamps the mirror glass 2, the liquid crystal panel 3 and the light guide plate 4 together and presses them into the bottom shell 101, and when the outer frame 1 is removed from the bottom shell 101, the internal components can be prevented from falling out and being damaged; when it is necessary to remove the mirror glass 2, the liquid crystal panel 3 and the light guide plate 4 from the bottom shell 101, the limit frame 12 is pressed along the support column 11 to move closer to the bottom shell 101, so that the limit frame 12 releases the mirror glass 2, the liquid crystal panel 3 and the light guide plate 4, and then the mirror glass 2, the liquid crystal panel 3 and the light guide plate 4 are tilted in turn and taken out from the bottom shell 101.

[0029] See also Figure 3 and Figure 6 As shown, a sealing gasket 14 is sleeved on the edge of the outer frame 1 by bonding; a plurality of supporting points 15 are fixedly connected to the bottom of the bottom shell 101, and the supporting points 15 are integrally formed with the bottom shell 101.

[0030] The sealing gasket 14 can make the connection between the outer frame 1 and the bottom shell 101 tighter, play a certain waterproof role, and prevent water from seeping in from the gap between the outer frame 1 and the bottom shell 101; the support point 15 expands the gap between the bottom shell 101 and the installation location, preventing the bottom shell 101 from completely covering the installation location, and the heat dissipation effect is better.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A backlight source for a rearview mirror with a heat dissipation structure, comprising an outer frame (1), a bottom shell (101), a mirror glass (2), a liquid crystal panel (3), a light guide plate (4) and a light strip (5), wherein the light guide plate (4) is installed in the bottom shell (101), the liquid crystal panel (3) is installed on the light guide plate (4), the mirror glass (2) is installed on the liquid crystal panel (3), the light strip (5) is installed in the outer frame (1), the light strip (5) is flush with the light guide plate (4), the outer frame (1) is installed on the bottom shell (101), the mirror glass (2), the liquid crystal panel (3) and the light guide plate (4) are all located between the bottom shell (101) and the outer frame (1), characterized in that: It also includes a heat dissipation assembly (6) for dissipating heat for the rearview mirror, the heat dissipation assembly (6) including a surrounding frame (601), a heat dissipation plate (602) and heat dissipation ridges (603), the heat dissipation plate (602) is installed in the bottom shell (101), the surrounding frame (601) is installed on the heat dissipation plate (602), the surrounding frame (601) wraps the light guide plate (4), and the heat dissipation ridges (603) are fixedly connected to the bottom shell (101).

2. The backlight source for a rearview mirror with a heat dissipation structure according to claim 1, characterized in that: The heat dissipation ribs (603) and the heat dissipation plates (602) are both hexagonal honeycomb structures.

3. The backlight source for a rearview mirror with a heat dissipation structure according to claim 1, characterized in that: The invention also comprises a support frame (7) mounted on the bottom shell (101), a fan (8) being rotatably arranged inside the support frame (7), a plurality of air guide holes (901) being opened on the bottom shell (101), and the air guide holes (901) and the support frame (7) being connected to each other and being communicated with an air guide pipe (9).

4. The backlight source for a rearview mirror with a heat dissipation structure according to claim 1, characterized in that: The invention also comprises a support column (11) fixedly connected to the bottom shell (101), a plurality of sliding grooves (10) are provided on the bottom shell (101), a limit frame (12) is slidably arranged on the sliding grooves (10) and the support column (11), an elastic member (13) is wound around the support column (11), and two ends of the elastic member (13) are respectively fixedly connected to the support column (11) and the limit frame (12).

5. The backlight source for a rearview mirror with a heat dissipation structure according to claim 1, characterized in that: A sealing gasket (14) is sleeved on the edge of the outer frame (1).

6. The backlight source for a rearview mirror with a heat dissipation structure according to claim 1, characterized in that: A plurality of supporting points (15) are fixedly connected to the bottom shell (101).

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