Electromagnetic shielding protection backlight source structure

Abstract

The utility model discloses an electromagnetic shielding protection backlight structure, which relates to the technical field of backlight structures and comprises a packaging shell, a reflector, a light source and a control circuit board are sequentially and fixedly arranged on the inner wall of the packaging shell from top to bottom, and a shielding cover is slidably sleeved on the outer side of the packaging shell. The two sides of the bottom of the inner wall of the shielding cover are provided with plugging positioning mechanisms, and the plugging positioning mechanisms are used for limiting the connection between the packaging housing and the shielding cover. According to the light source, the control circuit board, the filter and the shielding cover provided by the utility model, the backlight source assembly can be subjected to outer side wrapping type shielding protection, and the backlight source assembly is effectively prevented from being subjected to external electromagnetic interference during use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of backlight structure, specifically relates to a electromagnetic shielding protection backlight structure. BACKGROUND

[0002] The backlight source is generally composed of light source, light guide plate, reflecting sheet, diffusion sheet, brightness enhancement film and the like structure, and is indispensable component in the light emitting equipment.

[0003] The internal backlight assembly of the existing backlight source is directly arranged in the equipment interior when using, so that the backlight assembly is susceptible to external electromagnetic interference when working, and the use stability of the backlight source is reduced, and the traditional protection measure is through setting shielding plate to carry out electromagnetic shielding, but the shielding plate is arranged at the relatively narrow position, cannot carry out protection to the whole backlight source, still can cause the influence to the use of the backlight source. UTILITY MODEL CONTENT

[0004] In view of the problems existing in the prior art electromagnetic shielding protection backlight source structure, the utility model is provided.

[0005] Therefore, the utility model aims at providing a electromagnetic shielding protection backlight structure, solve the problem that the backlight source cannot be subjected to the overall electromagnetic shielding protection when using.

[0006] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A kind of electromagnetic shielding protection backlight source structure, including encapsulation shell, the inner wall of the encapsulation shell is sequentially fixed with reflector, light source and control circuit board from top to bottom, the outer side of the encapsulation shell is slidably equipped with shielding cover;

[0008] The inner wall bottom of the shielding cover is equipped with plug-in positioning mechanism on both sides, and the plug-in positioning mechanism is used to limit the connection of the encapsulation shell and shielding cover.

[0009] Preferably, the shielding cover is a copper shielding cover.

[0010] Preferably, the plug-in positioning mechanism includes an insert block, the insert block is slidably disposed on the inner wall bottom of the shielding cover, a sliding plate is fixedly disposed in the insert block, two symmetrically arranged sliding grooves are formed in the inner wall of the shielding cover on both sides, the end of the sliding plate is slidably disposed in the sliding groove, a spring is fixedly disposed between the sliding plate and the inner wall of the sliding groove, a plug-in slot is formed in the bottom of the encapsulation shell to cooperate with the plug-in of the insert block, and the upper end side of the insert block is inclinedly arranged.

[0011] Preferably, a filter is fixedly disposed on the bottom of the control circuit board, and the filter is electrically connected with the control circuit board.

[0012] Further, the shielding cover is provided with a push bolt on each side, and the end of the push bolt is in contact with the outer sidewall of the plug.

[0013] Preferably, the inner wall of the shielding cover is provided with two symmetrical rubber positioning blocks at the bottom.

[0014] In the above technical solution, the technical effect and advantages of the utility model are provided.

[0015] 1. The utility model discloses a light source, control circuit board, filter and shielding cover, which can shield and protect the backlight source assembly from outside, effectively avoiding the electromagnetic interference of the backlight source assembly in use.

[0016] 2. The utility model discloses a shielding cover, packaging shell and plug positioning mechanism, which can quickly disassemble the backlight source assembly and the shielding cover, and facilitate the replacement of the shielding cover when it is damaged. DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art according to these drawings.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of the utility model;

[0020] Figure 3 It is a partial structural schematic diagram of the utility model; Figure 2 A enlarged schematic diagram of the A part of the utility model.

[0021] Mark explanation:

[0022] 1, packaging shell;2, reflector;3, light source;4, control circuit board;5, shielding cover;6, plug;7, slide plate;8, spring;9, slot;10, filter;11, push bolt;12, rubber positioning block. DETAILED DESCRIPTION

[0023] In order to make those skilled in the art better understand the technical scheme of the utility model, the utility model will be further introduced in detail in combination with the drawings.

[0024] The utility model discloses an electromagnetic shielding protection backlight source structure.

[0025] The utility model provides a kind of Figures 1-3The electromagnetic shielding protective backlight structure shown comprises an encapsulation shell 1, the inner wall of the encapsulation shell 1 is sequentially fixed with a light-reflecting plate 2, a light source 3 and a control circuit board 4 from top to bottom, the outer side of the encapsulation shell 1 is sleeved with a shielding cover 5, the shielding cover 5 is a copper shielding cover, the inner wall bottom of the shielding cover 5 is fixed with two symmetrically arranged rubber positioning blocks 12;

[0026] The inner wall bottom of the shielding cover 5 is provided with a plug-in positioning mechanism on both sides, the plug-in positioning mechanism is used for limiting the connection of the encapsulation shell 1 and the shielding cover 5, the bottom of the control circuit board 4 is fixed with a filter 10, and the filter 10 is electrically connected with the control circuit board 4.

[0027] When the backlight is assembled, the light-reflecting plate 2, the light source 3 and the control circuit board 4 in the backlight assembly are encapsulated through the encapsulation shell 1, and the filter 10 is connected, then the shielding cover 5 is sleeved on the encapsulation shell 1, the whole outer side of the backlight is wrapped and protected through the shielding cover 5, and the filtering effect of the filter 10 can be combined, so that the external electromagnetic interference on the backlight can be avoided as much as possible.

[0028] In order to enable the shielding cover 5 to be quickly connected with the backlight assembly, as shown, Figures 2-3 The plug-in positioning mechanism comprises a plug-in block 6, the plug-in block 6 is slidably arranged at the inner wall bottom of the shielding cover 5, the inside of the plug-in block 6 is fixedly provided with a sliding plate 7, both sides of the inner wall of the shielding cover 5 are provided with two symmetrically arranged sliding grooves, the end of the sliding plate 7 is slidably arranged in the sliding groove, the spring 8 is fixed between the sliding plate 7 and the inner wall of the sliding groove, the bottom of the encapsulation shell 1 is provided with a plug-in groove 9 matched with the plug-in block 6, the upper end side of the plug-in block 6 is obliquely arranged, the two sides of the shielding cover 5 are threadedly provided with a push bolt 11, and the end of the push bolt 11 is in contact with the outer side wall of the plug-in block 6.

[0029] When the shielding cover 5 is sleeved on the outer side of the encapsulation shell 1, the side of the plug-in groove 9 pushes the inclined surface of the plug-in block 6, the plug-in block 6 moves horizontally under the cooperation of the sliding plate 7 and the sliding groove, and the spring 8 is extruded, when the backlight assembly contacts the rubber positioning block 12, under the elastic recovery of the spring 8, the end of the plug-in block 6 is inserted into the plug-in groove 9, so that the connection of the encapsulation shell 1 and the shielding cover 5 is completed, and when the shielding cover 5 needs to be disassembled, the push bolt 11 can be rotated, so that the plug-in block 6 is pushed, at this time, the encapsulation shell 1 is lifted to be separated from the shielding cover 5, and the operation convenience of the whole backlight is improved.

[0030] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. An electromagnetic shielded protective backlight structure comprising an encapsulation housing (1), characterized in that, The inner wall of the packaging shell (1) is sequentially provided with a reflecting plate (2), a light source (3) and a control circuit board (4) from top to bottom, and the outer side of the packaging shell (1) is sleeved with a shielding cover (5). Both sides of the bottom of the inner wall of the shielding cover (5) are provided with plug-in positioning mechanisms, which are used to limit the connection between the packaging shell (1) and the shielding cover (5).

2. The electromagnetic shielded back light structure according to claim 1, wherein, The shielding cover (5) is a copper shielding cover.

3. The electromagnetic shielded back light structure according to claim 1, wherein, The plug-in positioning mechanism comprises a plug block (6) which is slidably arranged at the bottom of the inner wall of the shielding cover (5), a slide plate (7) is fixedly arranged in the plug block (6), two symmetrical slide grooves are formed in the inner wall of the shielding cover (5), the end of the slide plate (7) is slidably arranged in the slide groove, a spring (8) is fixedly arranged between the slide plate (7) and the inner wall of the slide groove, a plug slot (9) is formed in the bottom of the packaging shell (1) and is matched with the plug block (6), and the upper end side of the plug block (6) is inclined.

4. The electromagnetic shielded back light structure according to claim 1, wherein, The bottom of the control circuit board (4) is fixedly provided with a filter (10), and the filter (10) is electrically connected with the control circuit board (4).

5. The electromagnetic shielded back light structure according to claim 1, wherein, Both sides of the shielding cover (5) are threadedly provided with push bolts (11), and the ends of the push bolts (11) are in contact with the outer side wall of the plug block (6).

6. The electromagnetic shielded back light structure according to claim 1, wherein, The bottom of the inner wall of the shielding cover (5) is fixedly provided with two symmetrical rubber positioning blocks (12).

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