Backlight module and display device

Abstract

The utility model discloses a backlight module and a display device, and belongs to the technical field of display screens. The utility model discloses a backlight module and a display device. The backlight module comprises a display screen, a rear cover and a dismounting mechanism, the rear cover is installed on the rear side of the display screen, and the disassembly and assembly mechanism is arranged in the display screen. The dismounting and mounting mechanism comprises a connecting block, a mounting hole, a circular shaft, gears, a toothed bar, a compression spring, a matching rod and a mounting rod, the connecting block is fixedly connected to the front side of the rear cover, the mounting hole is formed in one side of the connecting block, the circular shaft is connected to the interior of the display screen through a bearing, the gears are connected to the surface of the circular shaft in a sleeving mode, and the number of the gears is two. According to the structure, the rear cover can be quickly detached from the rear side of the display screen through the matched use of the mechanisms, the time in the maintenance process is shortened, the maintenance process is more efficient, and meanwhile, maintenance personnel can quickly diagnose problems and take necessary measures, so that the maintenance cost is reduced, and the maintenance efficiency is improved. And the display screen can recover normal operation more quickly.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, and more specifically to a backlight module and a display device. Background Art

[0002] Display screens are devices used to display images, text or videos, usually made of technologies such as LCD, OLED, and LED. Display screens are widely used in computers, televisions, mobile phones, tablets, digital cameras, car navigation systems and other devices.

[0003] The backlight module is the light source of the liquid crystal display, located behind the liquid crystal panel. Its function is to provide light so that the image on the liquid crystal panel can be seen by the user. After long-term use, the electronic components of the backlight module will heat up and cause the temperature inside the display to rise. In a high temperature environment, the stability of the internal components of the backlight module will be affected, which may easily lead to component failure or damage, and increase the maintenance and replacement frequency of the display. Most of the existing display housings are installed with screws, and it takes more manpower and time to unscrew the screws one by one when maintaining the display. Disassembly and assembly are relatively complicated, which will increase the difficulty and time cost of maintenance and repair.

[0004] In view of this, we propose a backlight module and a display device. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The utility model aims to provide a backlight module and a display device to solve the problems of inconvenience in disassembly and maintenance and poor heat dissipation effect in the above-mentioned background technology.

[0007] 2. Technical solution

[0008] A backlight module comprises a display screen, a back cover and a disassembly and assembly mechanism; the back cover is installed on the back side of the display screen, and the disassembly and assembly mechanism is arranged inside the display screen; the disassembly and assembly mechanism comprises a connecting block, a mounting hole, a round shaft, a gear, a toothed rod, a compression spring, a matching rod and a mounting rod, the connecting block is fixedly connected to the front side of the back cover, the mounting hole is opened on one side of the connecting block, the round shaft is connected to the inside of the display screen through a bearing, the gear is sleeved on the surface of the round shaft, there are two gears, and they are evenly distributed on the surface of the round shaft, the toothed rod is meshedly connected to one side of the front gear, the top end of the geared rod passes through the top of the display screen, the matching rod is meshedly connected to the bottom of the rear gear, one end of the mounting rod is fixedly connected to one end of the matching rod, and the other end of the mounting rod is fixedly passed through the inside of the mounting hole.

[0009] Preferably, a slide bar is fixedly connected to the inner wall of the display screen, a slider is fixedly connected to the bottom of the matching rod, and the slider is slidably connected to the surface of the slide bar.

[0010] Preferably, the outer side of the gear rod is fixedly connected to a limiting block, and the inner wall of the display screen is provided with a limiting groove used in conjunction with the limiting block.

[0011] Preferably, a handle is fixedly connected to the top end of the gear rod, and the handle is circular in shape.

[0012] Preferably, a limiting ring is sleeved on the surface of the circular shaft, and the limiting rings are respectively located at the front side and the rear side of the gear.

[0013] Preferably, a telescopic member is movably provided inside the compression spring, one end of the telescopic member is fixedly connected to the gear rod, and the other end of the telescopic member is fixedly connected to the top of the inner wall of the display screen.

[0014] Preferably, the rear cover is fixedly connected with a protrusion, and the protrusion is in the shape of an elongated strip.

[0015] Preferably, the heat dissipation mechanism is arranged inside the display screen, the module board is installed inside the display screen, the heat dissipation mechanism includes heat dissipation holes, Peltiers, heat sinks and heat dissipation fans, the heat dissipation holes are opened on the rear side of the rear cover, the Peltiers are installed on the rear side of the module board, the heat sinks are installed on the rear side of the Peltiers, and the heat dissipation fan is installed on the front side of the rear cover and is located on the rear side of the heat sink.

[0016] Preferably, there are several heat dissipation holes, which are evenly distributed on the rear side of the rear cover.

[0017] Preferably, a mounting mechanism is provided on the rear side of the module plate, and the mounting mechanism includes a baffle, a round rod, a mounting block, a tension spring and a pull plate, the baffle is fixedly mounted on the inner wall of the display screen, one end of the round rod is arranged on the outer side of the baffle, and the other end of the round rod passes through the inner side of the baffle, the mounting block is fixedly connected to one end of the round rod and is located on the rear side of the module plate, one end of the tension spring is fixedly connected to the inner side of the baffle, and the other end of the tension spring is fixedly connected to the inner side of the mounting block, and the pull plate is fixedly connected to one end of the round rod and is located on the outer side of the baffle.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. The utility model provides a backlight module. Through the coordinated use of the above-mentioned mechanism, the back cover can be quickly removed from the back side of the display screen, reducing the time in the maintenance process and making the maintenance process more efficient. At the same time, maintenance personnel can diagnose problems more quickly and take necessary measures, thereby reducing maintenance costs and allowing the display screen to resume normal operation more quickly.

[0021] 2. The utility model provides a display device, which, through the use of a heat dissipation mechanism, can effectively reduce the temperature inside the display screen, extend the service life of the display screen and the internal module board electronic components, reduce the frequency and cost of maintenance and replacement of parts, and improve the overall reliability and economy of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a rear-view stereoscopic schematic diagram of the whole of the utility model;

[0024] Figure 3 It is a perspective schematic diagram of the overall rear cross-section of the utility model;

[0025] Figure 4 For this utility model Figure 3 An enlarged three-dimensional schematic diagram of point A in the middle;

[0026] Figure 5 For this utility model Figure 3 The enlarged three-dimensional schematic diagram of point B in the middle;

[0027] Figure 6 For this utility model Figure 3 The enlarged three-dimensional schematic diagram of the center C;

[0028] Explanation of the numbers in the figure: 1. display screen; 101. module board; 102. back cover; 201. connecting block; 202. mounting hole; 203. round shaft; 204. gear; 205. gear rod; 206. compression spring; 207. matching rod; 208. mounting rod; 301. heat dissipation hole; 302. Peltier; 303. heat sink; 304. cooling fan; 401. sliding rod; 402. sliding block; 501. limiting block; 502. limiting groove; 6. handle; 7. limiting ring; 8. telescopic member; 9. bump; 111. baffle; 112. round rod; 113. mounting block; 114. tension spring; 115. pull plate. DETAILED DESCRIPTION

[0029] 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" and the like indicate orientations or positional relationships based on the orientations 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] See also Figure 1-5 ,The utility model provides a technical solution:

[0033] A backlight module, comprising a display screen 1, a rear cover 102 and a disassembly mechanism; the rear cover 102 is mounted on the rear side of the display screen 1, and the disassembly mechanism is arranged inside the display screen 1; the disassembly mechanism comprises a connecting block 201, a mounting hole 202, a round shaft 203, a gear 204, a gear rod 205, a compression spring 206, a matching rod 207 and a mounting rod 208, the connecting block 201 is fixedly connected to the front side of the rear cover 102, the mounting hole 202 is opened on one side of the connecting block 201, the round shaft 203 is connected to the inside of the display screen 1 through a bearing, and the gear 204 is connected to the gear rod 205. 04 is sleeved on the surface of the circular shaft 203, there are two gears 204, and they are evenly distributed on the surface of the circular shaft 203, the gear rod 205 is meshedly connected to one side of the front gear 204, the top of the gear rod 205 penetrates to the top of the display screen 1, the matching rod 207 is meshedly connected to the bottom of the rear gear 204, one end of the mounting rod 208 is fixedly connected to one end of the matching rod 207, and the other end of the mounting rod 208 is fixedly penetrated to the inside of the mounting hole 202, and the rear cover 102 is fixedly connected with a protrusion 9, and the shape of the protrusion 9 is a long strip. During operation, when the staff needs to repair the module board 101 and accessories inside the display screen 1, they can first pull the gear rod 205 upwards. The upward movement of the gear rod 205 will drive the limit block 501 to slide inside the limit groove 502, which can limit the vertical movement of the gear rod 205 and squeeze the compression spring 206. When the gear rod 205 moves upward, it will drive the meshing front gear 204 to rotate. The rotation of the front gear 204 will also drive the circular shaft 203 and the rear gear 204 to rotate. When the rear gear 204 rotates, it will also drive The meshingly connected mating rods 207 move outward at the same time. When the mating rods 207 move outward, they will drive the slider 402 on the surface of the slider 401, which can assist in limiting the mating rod 207 and make it move in parallel. When the mating rods 207 move outward, they can drive the mounting rod 208 to move outward and make the mounting rod 208 disengage from the inside of the mounting hole 202. Then, the back cover 102 can be separated from the display screen 1 by holding the protrusion 9, so that the back cover 102 can be disassembled quickly and conveniently, reducing the time during the maintenance of the display screen 1 and making the maintenance process more efficient.

[0034] Furthermore, the top of the gear rod 205 is fixedly connected with a handle 6, which is circular in shape. During operation, when the gear rod 205 moves, the staff pulls the gear rod 205 through the handle 6 to move, and a comfortable and convenient grip is provided under the action of the handle 6, which is convenient for the staff to pull the gear rod 205.

[0035] It is worth noting that the surface of the circular shaft 203 is sleeved with a limiting ring 7, which is respectively located at the front and rear sides of the gear 204. During operation, when the gear 204 rotates, the limiting ring 7 can prevent the gear 204 from being displaced on the surface of the circular shaft 203 and affecting the meshing connection between the gear 204 and the gear rod 205 and the matching rod 207, thereby playing an auxiliary limiting role for the gear 204.

[0036] It is worth noting that a telescopic member 8 is movably provided inside the compression spring 206, one end of the telescopic member 8 is fixedly connected to the gear rod 205, and the other end of the telescopic member 8 is fixedly connected to the top of the inner wall of the display screen 1. During operation, when the compression spring 206 is squeezed, the telescopic member 8 is squeezed at the same time, making the compression spring 206 more stable when subjected to force, thereby reducing the instability or distortion of the compression spring 206 caused by external force.

[0037] Specifically, the heat dissipation mechanism includes a heat dissipation hole 301, a Peltier 302, a heat sink 303 and a heat dissipation fan 304. The heat dissipation hole 301 is opened on the rear side of the rear cover 102, the Peltier 302 is installed on the rear side of the module board 101, the heat sink 303 is installed on the rear side of the Peltier 302, the heat dissipation fan 304 is installed on the front side of the rear cover 102 and is located on the rear side of the heat sink 303. The inner wall of the display screen 1 is fixedly connected with a slide bar 401, the bottom of the matching rod 207 is fixedly connected with a slider 402, the slider 402 is slidably connected to the surface of the slide bar 401, the outer side of the gear rod 205 is fixedly connected with a limit block 501, and the inner wall of the display screen 1 is opened with a limit groove 502 used in conjunction with the limit block 501. During operation, when the display screen 1 is working, the Peltier 302 can be powered on and operated. After the Peltier 302 is running, it will absorb the heat generated on the module board 101 and transfer the heat to the back side of the Peltier 302. Under the action of the heat sink 303, the heat dissipation effect of the hot end of the Peltier 302 can be accelerated. At the same time, the cooling fan 304 is operated. After the cooling fan 304 is running, it will blow air outward through the heat dissipation hole 301, which can effectively reduce the temperature inside the display screen 1, extend the service life of the display screen 1 and the electronic components of the module board 101 inside, reduce the frequency and cost of work maintenance and replacement of parts, and improve the overall reliability and economy of the display screen 1.

[0038] In addition, there are several heat dissipation holes 301, which are evenly distributed on the rear side of the rear cover 102. When working, the plurality of heat dissipation holes 301 can cooperate with the heat dissipation fan 304 to improve the circulation of air inside and outside the display screen 1, accelerate the heat dissipation, and provide a larger surface area, increase the heat dissipation area, and improve the heat dissipation efficiency.

[0039] Finally, a mounting mechanism is provided on the rear side of the module plate 101, and the mounting mechanism includes a baffle 111, a round rod 112, a mounting block 113, a tension spring 114 and a pull plate 115. The baffle 111 is fixedly mounted on the inner wall of the display screen 1, one end of the round rod 112 is arranged on the outer side of the baffle 111, and the other end of the round rod 112 passes through the inner side of the baffle 111, the mounting block 113 is fixedly connected to one end of the round rod 112 and is located on the rear side of the module plate 101, one end of the tension spring 114 is fixedly connected to the inner side of the baffle 111, and the other end of the tension spring 114 is fixedly connected to the inner side of the mounting block 113, and the pull plate 115 is fixedly connected to one end of the round rod 112 and is located on the outer side of the baffle 111. During operation, when a new module plate 101 needs to be replaced, the round rod 112 can be pulled outwardly through the pull plate 115 first. The outward movement of the round rod 112 will drive the mounting block 113 to move outward and squeeze the tension spring 114. Then the mounting block 113 can no longer block and limit the module plate 101, and the module plate 101 can be taken out of the display screen 1. When installing a new module plate 101, the mounting block 113 is directly squeezed, and the tension spring 114 is squeezed, and the round rod 112 is pushed to move outward. Then the module plate 101 will slide along the inclined surface inside the mounting block 113 to the front side of the mounting block 113, and the mounting block 113 is squeezed inwardly under the rebound force of the tension spring 114. Finally, under the extrusion limit of the mounting block 113, the new module plate 101 can be quickly replaced.

[0040] Working principle: During operation, when the staff needs to repair the module board 101 and accessories inside the display screen 1, they can first pull the gear rod 205 upwards. The upward movement of the gear rod 205 will drive the limit block 501 to slide inside the limit groove 502, which can limit the vertical movement of the gear rod 205 and squeeze the compression spring 206. When the gear rod 205 moves upward, it will drive the meshing front gear 204 to rotate. The rotation of the front gear 204 will also drive the circular shaft 203 and the rear gear 204 to rotate. When the rear gear 204 rotates, it will also drive the meshing matching rod 207 to move outward at the same time. When the matching rod 207 moves outward, it will drive the slider 402 on the surface of the slide rod 401, which can play a role in assisting the matching rod 207 to limit its parallel movement. When the matching rod 207 moves outward, it can drive the installation rod 208 to move outward, and make the installation rod 208 move outward. The mounting rod 208 is disengaged from the inside of the mounting hole 202, and then the protrusion 9 is grasped to separate the back cover 102 from the display screen 1, so that the back cover 102 can be quickly and conveniently disassembled, thereby reducing the time during the maintenance process of the display screen 1 and making the maintenance process more efficient. When the display screen 1 is working, the Peltier 302 can be powered on and operated. After the operation, the Peltier 302 will absorb the heat generated on the module board 101 and transfer the heat to the back side of the Peltier 302. Under the action of the heat sink 303, the heat dissipation effect of the hot end of the Peltier 302 can be accelerated. At the same time, the cooling fan 304 is operated. After the operation, the cooling fan 304 will blow air outward through the heat dissipation hole 301, which can effectively reduce the temperature inside the display screen 1, extend the service life of the display screen 1 and the electronic components of the module board 101 inside, reduce the frequency and cost of work maintenance and replacement of parts, and improve the overall reliability and economy of the display screen 1.

[0041] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A display device, comprising a display screen (1), a back cover (102) and a disassembly and assembly mechanism; Features: The rear cover (102) is mounted on the rear side of the display screen (1), and the disassembly and assembly mechanism is arranged inside the display screen (1); The disassembly and assembly mechanism comprises a connection block (201), a mounting hole (202), a round shaft (203), a gear (204), a gear rod (205), a compression spring (206), a matching rod (207) and a mounting rod (208); the connection block (201) is fixedly connected to the front side of the rear cover (102); the mounting hole (202) is provided on one side of the connection block (201); the round shaft (203) is connected to the inside of the display screen (1) via a bearing; the gear (204) is sleeved on the surface of the round shaft (203); The gear (204) is arranged on a surface of the circular shaft (203), the number of the gears (204) is two and they are evenly distributed on the surface of the circular shaft (203), the gear rod (205) is meshedly connected to one side of the front gear (204), the top end of the gear rod (205) passes through the top of the display screen (1), the matching rod (207) is meshedly connected to the bottom of the rear gear (204), one end of the mounting rod (208) is fixedly connected to one end of the matching rod (207), and the other end of the mounting rod (208) is fixedly passed through the inside of the mounting hole (202).

2. A display device according to claim 1, Features: The inner wall of the display screen (1) is fixedly connected with a sliding rod (401), the bottom of the matching rod (207) is fixedly connected with a sliding block (402), and the sliding block (402) is slidably connected to the surface of the sliding rod (401).

3. A display device according to claim 1, Features: The outer side of the gear rod (205) is fixedly connected to a limiting block (501), and the inner wall of the display screen (1) is provided with a limiting groove (502) used in conjunction with the limiting block (501).

4. A display device according to claim 1, Features: The top end of the gear rod (205) is fixedly connected with a handle (6), and the handle (6) is circular in shape.

5. A display device according to claim 1, Features: A limiting ring (7) is sleeved on the surface of the circular shaft (203), and the limiting ring (7) is respectively located on the front side and the rear side of the gear (204).

6. A display device according to claim 1, Features: A telescopic member (8) is movably provided inside the compression spring (206), one end of the telescopic member (8) is fixedly connected to the gear rod (205), and the other end of the telescopic member (8) is fixedly connected to the top of the inner wall of the display screen (1).

7. A display device according to claim 1, Features: The rear cover (102) is fixedly connected with a protrusion (9), and the protrusion (9) is in the shape of a long strip.

8. A backlight module, used in conjunction with a display device as claimed in any one of claims 1 to 7, comprising a module board (101) and a heat dissipation mechanism, Features: The heat dissipation mechanism is arranged inside the display screen (1), the module board (101) is installed inside the display screen (1), the heat dissipation mechanism comprises a heat dissipation hole (301), a Peltier (302), a heat sink (303) and a heat dissipation fan (304), the heat dissipation hole (301) is opened on the rear side of the rear cover (102), the Peltier (302) is installed on the rear side of the module board (101), the heat sink (303) is installed on the rear side of the Peltier (302), and the heat dissipation fan (304) is installed on the front side of the rear cover (102) and is located on the rear side of the heat sink (303).

9. The backlight module according to claim 8, Features: There are a plurality of heat dissipation holes (301), which are evenly distributed on the rear side of the rear cover (102).

10. The backlight module according to claim 8, Features: A mounting mechanism is arranged at the rear side of the module plate (101), and the mounting mechanism comprises a baffle (111), a round rod (112), a mounting block (113), a tension spring (114) and a pull plate (115); the baffle (111) is fixedly mounted on the inner wall of the display screen (1); one end of the round rod (112) is arranged on the outer side of the baffle (111); the other end of the round rod (112) penetrates the inner side of the baffle (111); the mounting block (113) is fixedly connected to one end of the round rod (112) and is located at the rear side of the module plate (101); one end of the tension spring (114) is fixedly connected to the inner side of the baffle (111); the other end of the tension spring (114) is fixedly connected to the inner side of the mounting block (113); and the pull plate (115) is fixedly connected to one end of the round rod (112) and is located at the outer side of the baffle (111).

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