Side light type LED backlight source

Abstract

The utility model discloses a sidelight type light-emitting diode (LED) backlight source, which relates to the technical field of backlight sources, and adopts the technical scheme that the sidelight type LED backlight source comprises an LED backlight source shell, a heat dissipation cavity is formed in the LED backlight source shell, an LED light source body is fixedly arranged in the heat dissipation cavity, a dust falling groove is formed in the bottom of the heat dissipation cavity, a dustproof net and a ventilation net are fixedly arranged in the heat dissipation cavity, and the LED light source body is fixedly arranged in the ventilation net. The side light type LED backlight source has the beneficial effects that the brush plate drives the bristles to sweep the dustproof net through the fixing plate, swept dust falls out of the heat dissipation cavity through the dust falling groove, the intercepted dust can be swept conveniently, the dust intercepted on the ventilation net is shaken off through vibration of the ventilation net, and the side light type LED backlight source is convenient to clean. Therefore, the dust screen and the ventilation net are prevented from blocking due to long-time dust interception, the ventilation performance of the dust screen and the ventilation net is prevented from being influenced, and normal heat dissipation of the device is not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight sources, in particular to a side-light LED backlight source. Background Art

[0002] There are two main types of LED backlight sources: in-line and edge-lit. Edge-lit LED backlight sources place the light source on the side of the light guide plate. LED backlight sources require ventilation and heat dissipation when in use.

[0003] For example, a side-lit LED backlight source includes a mounting base and a backlight panel, the left side of the mounting base is sleeved with the backlight panel, the upper and lower ends of the mounting base are both provided with fixing devices, and a dust-proof heat dissipation device is provided at the middle position of the right side of the mounting base. The utility model avoids the problem of troublesome disassembly and replacement in the traditional bolt fixing method by providing a groove, a first spring, a limit pin, a slide groove, a second spring and a fixing rod, thereby improving the work efficiency of the staff. The side-lit LED backlight source is provided with a fixing frame, a heat dissipation rod, a motor, a control chip, a first limit rubber sheet, a limit rod and a second limit rubber sheet, thereby avoiding the problem of easy dust entry in the fixed heat dissipation holes, which is common. When too much dust accumulates in the fixed shell, the heat dissipation effect of the fin tube will be reduced, thereby improving the ease of use of the device.

[0004] In the above patent, the internal and external connectivity of the mounting base is controlled by a heat dissipation rod to prevent excessive accumulation of dust in the fixed shell. However, dust still enters the fixed shell, which makes it inconvenient to automatically clean the dust that enters the fixed shell. Therefore, a side-lit LED backlight source is needed that can prevent dust from entering the shell and automatically clean the intercepted dust. Utility Model Content

[0005] To this end, the utility model provides a side-lit LED backlight source, which uses a dustproof mechanism to solve the problem of inconvenience in automatically cleaning the dust entering the fixed housing.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a side-lit LED backlight source, comprising an LED backlight source housing, a heat dissipation cavity is provided inside the LED backlight source housing, an LED light source body is fixedly provided inside the heat dissipation cavity, a dust collection groove is provided at the bottom of the heat dissipation cavity, a dustproof net and a ventilation net are fixedly provided inside the heat dissipation cavity, and a dustproof mechanism is provided inside the heat dissipation cavity;

[0007] The dust-proof mechanism includes a cleaning component and a shock net component, the cleaning component includes a reciprocating screw rod, the reciprocating screw rod is arranged inside the heat dissipation cavity, a slider is sleeved on the outside of the reciprocating screw rod, two fixing plates are fixedly provided on the outside of the slider, a brush plate is fixedly provided at one end of the two fixing plates, and columns are fixedly inserted at the other ends of the two fixing plates, the shock net component includes a support plate, the support plate is fixedly arranged inside the heat dissipation cavity, a plurality of empty slots are opened inside the support plate, a limiting slot is opened on one side of the plurality of empty slots, and a shock net unit is provided inside the plurality of empty slots.

[0008] Preferably, the shock net unit includes a connecting plate, which is arranged inside the empty slot, a trapezoidal block is fixedly provided at the bottom of the connecting plate, a hammer head is fixedly provided at one end of the connecting plate, and a spring is provided inside the connecting plate.

[0009] Preferably, the connecting plate passes through the limiting groove and is slidably connected to the limiting groove.

[0010] Preferably, one end of the spring is fixedly connected to the hammer head, and the other end of the spring extends into the interior of the empty slot and is fixedly connected to a side wall of the empty slot.

[0011] Preferably, a motor is fixedly provided on one side of the LED backlight source housing, and an output end of the motor is fixedly connected to one end of a reciprocating screw rod.

[0012] Preferably, two ends of the reciprocating screw rod respectively penetrate two side walls of the heat dissipation cavity and are connected to the two side walls of the heat dissipation cavity through bearings.

[0013] Preferably, the sliding block is sleeved on the outside of the reciprocating screw and is connected to the reciprocating screw via a three-dimensional cam pair.

[0014] Preferably, the top and the bottom of the brush plate are both slidably connected to the inner wall of the heat dissipation cavity, and bristles are provided on one side of the brush plate, and the bristles are in contact with the dustproof net.

[0015] The utility model embodiment has the following advantages:

[0016] 1. Through the double interception of the dustproof net and the ventilation net, the LED light source body can be ventilated and dissipated normally when working. The brush plate drives the bristles to clean the dustproof net through the fixed plate. The cleaned dust falls out of the heat dissipation cavity through the dust falling groove, which is convenient for cleaning the intercepted dust;

[0017] 2. The elastic force of the spring pushes the hammer head to move, causing the hammer head to hit the ventilation net, causing the ventilation net to vibrate, and then the dust intercepted on the ventilation net is shaken off, thereby preventing the dust-proof net and the ventilation net from being blocked due to long-term dust interception, thereby preventing the dust-proof net and the ventilation net from being affected in terms of ventilation, and not affecting the normal heat dissipation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 A top view and partially cutaway stereogram provided by the utility model;

[0021] Figure 2 A three-dimensional diagram of the dust-proof mechanism provided by the utility model;

[0022] Figure 3 A partial cutaway stereogram of a stuxnet unit provided by the utility model;

[0023] Figure 4 A partial cutaway stereoscopic view of a support plate provided by the utility model;

[0024] Figure 5 The bottom stereogram provided by the utility model.

[0025] In the figure: 1 LED backlight housing, 2 heat dissipation cavity, 3 LED light source body, 4 dust collection groove, 5 dustproof net, 6 ventilation net, 7 motor, 8 reciprocating screw, 9 slider, 10 fixing plate, 11 brush plate, 12 column, 13 support plate, 14 empty slot, 15 limit slot, 16 trapezoidal block, 17 connecting plate, 18 hammer head, 19 spring. DETAILED DESCRIPTION

[0026] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See attached Figure 1 -Attached Figure 5The utility model provides a side-lit LED backlight source, comprising an LED backlight source housing 1, a heat dissipation cavity 2 is provided inside the LED backlight source housing 1, an LED light source body 3 is fixedly provided inside the heat dissipation cavity 2, a dust collection groove 4 is provided at the bottom of the heat dissipation cavity 2, a dustproof net 5 and a ventilation net 6 are fixedly provided inside the heat dissipation cavity 2, and a dustproof mechanism is provided inside the heat dissipation cavity 2;

[0028] The dust prevention mechanism includes a cleaning component and a shock net component. The cleaning component includes a reciprocating screw rod 8, which is arranged inside the heat dissipation cavity 2. A slider 9 is sleeved on the outside of the reciprocating screw rod 8. Two fixing plates 10 are fixedly arranged outside the slider 9. A brush plate 11 is fixedly arranged at one end of the two fixing plates 10. A column 12 is fixedly inserted at the other end of the two fixing plates 10. The shock net component includes a support plate 13, which is fixedly arranged inside the heat dissipation cavity 2. A plurality of empty slots 14 are opened inside the support plate 13. A limiting slot 15 is opened on one side of the plurality of empty slots 14. A shock net unit is arranged inside the plurality of empty slots 14.

[0029] In this embodiment, in order to facilitate the purpose of cleaning the intercepted dust, the double interception of the dustproof net 5 and the ventilation net 6 is used to enable the LED light source body 3 to be normally ventilated and dissipated during operation. The brush plate 11 drives the bristles to clean the dustproof net 5 through the fixing plate 10, and the cleaned dust falls out of the heat dissipation cavity 2 through the dust falling groove 4, which is convenient for cleaning the intercepted dust. The ventilation net 6 is vibrated through the vibration net component, and the dust intercepted on the ventilation net 6 is shaken off, thereby preventing the dustproof net 5 and the ventilation net 6 from being blocked due to long-term dust interception, thereby preventing the ventilation of the dustproof net 5 and the ventilation net 6 from being affected, and will not affect the normal heat dissipation of the device;

[0030] Among them, in order to achieve the purpose of cleaning the dust intercepted on the ventilation net 6, the present device adopts the following technical solutions: the vibration net unit includes a connecting plate 17, the connecting plate 17 is arranged inside the empty slot 14, a trapezoidal block 16 is fixedly provided at the bottom of the connecting plate 17, a hammer head 18 is fixedly provided at one end of the connecting plate 17, a spring 19 is provided inside the connecting plate 17, the connecting plate 17 passes through the limiting slot 15 and is slidably connected to the limiting slot 15, one end of the spring 19 is fixedly connected to the hammer head 18, and the other end of the spring 19 extends into the empty slot 14 and is fixedly connected to a side wall of the empty slot 14. When the fixed plate 10 moves, the column 12 is driven to move, and the column 12 contacts the inclined surface of the trapezoidal block 16 to make the trapezoidal block 16 move to the left, and the trapezoidal block 16 moves through the connecting plate 17 to make the hammer head 18 move, and the movement of the hammer head 18 makes the spring 19 contract. When the column 12 is out of contact with the trapezoidal block 16, the elastic force of the spring 19 pushes the hammer head 18 to move, so that the hammer head 18 hits the ventilation net 6, causing the ventilation net 6 to vibrate, and then the dust intercepted on the ventilation net 6 is shaken off, thereby preventing the dust-proof net 5 and the ventilation net 6 from intercepting dust for a long time and being blocked;

[0031] Among them, in order to achieve the purpose of cleaning the dust intercepted by the dustproof net 5, the present device adopts the following technical scheme: a motor 7 is fixedly provided on one side of the LED backlight housing 1, and the output end of the motor 7 is fixedly connected to one end of the reciprocating screw 8, and the two ends of the reciprocating screw 8 respectively penetrate the two side walls of the heat dissipation cavity 2 and are connected to the two side walls of the heat dissipation cavity 2 through bearings, and the slider 9 is sleeved on the outside of the reciprocating screw 8 and is connected to the reciprocating screw 8 through a three-dimensional cam pair. The top and bottom of the brush plate 11 are both slidably connected to the inner wall of the heat dissipation cavity 2, and bristles are provided on one side of the brush plate 11, and the bristles are in contact with the dustproof net 5. Start the motor 7, and the motor 7 rotates to drive the slider 9 to move back and forth in a straight line through the reciprocating screw 8. The slider 9 moves through the fixed plate 10 so that the brush plate 11 drives the bristles to clean the dustproof net 5, and the cleaned dust falls out of the heat dissipation cavity 2 through the dust collection groove 4.

[0032] The use process of the utility model is as follows: when using the utility model, an external power supply is connected, and the LED light source body 3 can be ventilated and dissipated normally when working through the double interception of the dustproof net 5 and the ventilation net 6, and dust is prevented from contacting the LED light source body 3. When the dustproof net 5 and the ventilation net 6 need to be cleaned, the motor 7 is started, and the motor 7 rotates to drive the slider 9 to move back and forth in a straight line through the reciprocating screw rod 8. The slider 9 moves through the fixed plate 10 so that the brush plate 11 drives the bristles to clean the dustproof net 5. The cleaned dust falls out of the heat dissipation cavity 2 through the dust falling groove 4. At the same time, the fixed plate 10 drives the column 12 to move when it moves. The trapezoidal block 16 moves to the left through the contact between the column 12 and the inclined surface of the trapezoidal block 16, and the trapezoidal block 16 moves through the connecting plate 17 to move the hammer head 18, and the movement of the hammer head 18 causes the spring 19 to contract. When the column 12 is out of contact with the trapezoidal block 16, the elastic force of the spring 19 pushes the hammer head 18 to move, causing the hammer head 18 to hit the ventilation net 6, causing the ventilation net 6 to vibrate, and then causing the dust intercepted on the ventilation net 6 to fall off, thereby preventing the dust-proof net 5 and the ventilation net 6 from being blocked due to intercepting dust for a long time, thereby preventing the dust-proof net 5 and the ventilation net 6 from being affected in terms of ventilation performance, and not affecting the normal heat dissipation of the device.

[0033] The above are only preferred embodiments of the present invention. Any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the above technical solution. Therefore, any simple modification or equivalent replacement based on the technical solution of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A side-lit LED backlight source, comprising an LED backlight source housing (1), characterized in that: A heat dissipation cavity (2) is provided inside the LED backlight source housing (1), an LED light source body (3) is fixedly provided inside the heat dissipation cavity (2), a dust collection groove (4) is provided at the bottom of the heat dissipation cavity (2), a dustproof net (5) and a ventilation net (6) are fixedly provided inside the heat dissipation cavity (2), and a dustproof mechanism is provided inside the heat dissipation cavity (2); The dust prevention mechanism comprises a cleaning component and a shock net component. The cleaning component comprises a reciprocating screw rod (8). The reciprocating screw rod (8) is arranged inside the heat dissipation cavity (2). A slider (9) is sleeved on the outside of the reciprocating screw rod (8). Two fixing plates (10) are fixedly arranged outside the slider (9). A brush plate (11) is fixedly arranged at one end of the two fixing plates (10). A column (12) is fixedly inserted at the other end of the two fixing plates (10). The shock net component comprises a support plate (13). The support plate (13) is fixedly arranged inside the heat dissipation cavity (2). A plurality of empty slots (14) are provided inside the support plate (13). A limiting slot (15) is provided on one side of the plurality of empty slots (14). A shock net unit is provided inside the plurality of empty slots (14).

2. The edge-lit LED backlight source according to claim 1, characterized in that: The shock net unit comprises a connecting plate (17), the connecting plate (17) is arranged inside the empty slot (14), a trapezoidal block (16) is fixedly provided at the bottom of the connecting plate (17), a hammer head (18) is fixedly provided at one end of the connecting plate (17), and a spring (19) is provided inside the connecting plate (17).

3. The edge-lit LED backlight source according to claim 2, characterized in that: The connecting plate (17) passes through the limiting groove (15) and is slidably connected to the limiting groove (15).

4. The edge-lit LED backlight source according to claim 2, characterized in that: One end of the spring (19) is fixedly connected to the hammer head (18), and the other end of the spring (19) extends into the interior of the empty slot (14) and is fixedly connected to a side wall of the empty slot (14).

5. The edge-lit LED backlight source according to claim 1, characterized in that: A motor (7) is fixedly provided on one side of the LED backlight source housing (1), and an output end of the motor (7) is fixedly connected to one end of a reciprocating screw rod (8).

6. The edge-lit LED backlight source according to claim 1, characterized in that: The two ends of the reciprocating screw rod (8) respectively penetrate the two side walls of the heat dissipation cavity (2) and are connected to the two side walls of the heat dissipation cavity (2) via bearings.

7. The edge-lit LED backlight source according to claim 1, characterized in that: The sliding block (9) is sleeved on the outside of the reciprocating screw rod (8) and is connected to the reciprocating screw rod (8) via a three-dimensional cam pair.

8. The edge-lit LED backlight source according to claim 1, characterized in that: The top and bottom of the brush plate (11) are both slidably connected to the inner wall of the heat dissipation cavity (2), and bristles are provided on one side of the brush plate (11), and the bristles are in contact with the dustproof net (5).

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