Backlight module with replaceable light bar

Abstract

The backlight module comprises a frame body, a lamp holder and a light guide plate, a baffle is arranged on one side of the periphery of the frame body, a track is arranged on the other side of the periphery of the frame body, a first combining piece is arranged at one end of the track, a first fixing hole is formed in the other end of the track, the lamp holder is provided with a base, and the lamp holder is provided with a light guide plate. The base comprises a body, two sides of the body respectively extend upwards to be provided with a first sliding piece and a second sliding piece, one end of the second sliding piece is provided with a second fixing hole, the other end of the body is provided with a second combining piece, the first combining piece corresponds to the second fixing hole, and the second combining piece corresponds to the first fixing hole. The lamp holder is combined on the frame body, and the backlight module with the replaceable lamp strip has the advantages that the service life of a product is prolonged, and the maintenance is quick.

Description

Technical Field

[0001] The utility model relates to a backlight module with a replaceable light bar, in particular to a backlight module capable of quickly replacing the light bar. Background Art

[0002] With the improvement of people's economic level and living quality, the requirements for display specifications are also getting higher and higher. In order to enable users to achieve a better visual experience, the narrow bezel design to improve the screen occupation ratio of screen use is one of the current mainstream research and development directions. In display technology, liquid crystal display devices are the most widely used products at present. Generally, a liquid crystal display device mainly includes a liquid crystal display panel and a backlight module. The liquid crystal display panel controls the gray scale and color of each pixel passing through light to display the required image.

[0003] The backlight technology of the backlight module is a lighting form used in liquid crystal displays. The difference between the backlight type and the front light type is that the backlight is irradiated from the side or the back, while the front light is irradiated from the front as the name implies. The use of the backlight type is to increase the illumination in a low-light environment and the brightness on computer monitors and liquid crystal screens, and to generate light in a similar way to CRT displays. The backlight source may be an incandescent lamp, an electro-optical panel (ELP), a light-emitting diode (LED), a cold cathode fluorescent lamp (CCFL), etc. The electro-optical panel provides uniform light on the entire surface, while other backlight modules use diffusers to provide uniform light from non-uniform light sources.

[0004] A light-emitting diode is a semiconductor light source that emits light when current passes through it, that is, an electroluminescent semiconductor electronic component. Inside it, electrons and electron holes recombine to release energy in the form of photons. A light-emitting diode can only conduct (be energized) in one direction, which is called forward bias; when current flows through, electrons and electron holes (electron holes) recombine inside it to emit monochromatic light, which is called the "electroluminescent effect". The wavelength and color of the light are related to the type of semiconductor material used and the deliberately doped elemental impurities. The light-emitting diode has advantages such as high efficiency, long life, not easily damaged, fast response speed, and high reliability that are not available in traditional light sources.

[0005] The light-emitting diode backlight structure is mainly divided into two types, a single-group series power supply or a multi-group series / parallel power supply. Although the single-group series power supply uses a lower constant current, the input power supply must be increased to meet the total forward voltage level of the series power supply before it can drive the light-emitting diode. On the contrary, although the multi-group series / parallel light-emitting diode power supply requires a higher constant current to drive, it reduces the requirement for high voltage.

[0006] A liquid crystal display device includes a backlight module and a display panel. The backlight module is used to provide a display light source to the display panel. The light-emitting diode backlight module can be divided into a direct-lit light-emitting diode backlight module and an edge-lit light-emitting diode backlight module. The direct-lit light-emitting diode backlight module arranges multiple light-emitting diodes in an array and places them behind a diffuser sheet and the liquid crystal display device, directly irradiating the liquid crystal display device. In this way, the direct-lit type can quickly fine-tune the brightness of the light-emitting diodes according to the brightness changes of different parts of the picture, greatly improving the dynamic contrast ratio to the level of a plasma display. However, the disadvantage of the direct-lit light-emitting diode backlight module is that it requires a relatively large number of light-emitting diodes, resulting in high power consumption, a thick volume, and a high price.

[0007] The edge-lit light-emitting diode backlight module fixes white light-emitting diodes on one or both sides of the liquid crystal display device. There is a reflective sheet similar in size to the liquid crystal display device behind the liquid crystal display device. The light-emitting diodes shine in through the gap between the liquid crystal display device and the reflective sheet. The specially designed micro-patterns on the reflective sheet can reflect the light from the light-emitting diodes by 90° and then shine it on the back of the liquid crystal display device. Such reflective sheets are so precise that they can evenly distribute the light from the light-emitting diodes to the back of the liquid crystal display device without the need for a diffuser sheet. Among them, the edge-lit backlight module has the advantage of a thinner thickness because the light source is set beside the side (light-incident surface) of the light guide plate, which is beneficial to reducing the thickness of the entire liquid crystal display device. And because the edge-lit backlight module has a thinner and lighter appearance, it has gradually become the mainstream in the market.

[0008] However, when the light-emitting elements of the edge-lit backlight module are damaged, usually the entire backlight module or the display device is directly replaced, which not only significantly reduces the product life of the display device but also causes waste of other undamaged components.

[0009] In view of the problems of the above-mentioned conventional technologies, the present utility model provides a backlight module with a replaceable light bar, enabling its light-emitting elements to be quickly replaced. Summary of the Utility Model

[0010] When the light-emitting elements of the backlight module are damaged, usually the entire backlight module or the display device is directly replaced, which will reduce the product life of the display device and the backlight module.

[0011] An object of the present utility model is to provide a backlight module with a replaceable light bar, which mounts the light-emitting elements on a base, and the base corresponds to a track and is fixed to a fixing hole by a tenon, enabling the light bar to be quickly replaced when damaged and extending the product service life.

[0012] To achieve the above-mentioned objects and effects, the present utility model provides a backlight module with a replaceable light bar, which includes: a frame body, a lamp holder, and a light guide plate.

[0013] In an embodiment of the present utility model, a baffle is externally extended and provided on one side of the frame body, a track is extended and provided on the other side of the frame body towards this side, and a receiving space is formed by one side of the baffle and the inner side of the track of the frame body. Wherein, a first engaging member is provided at one end of the track, a first fixing hole is provided at the other end of the track, and the first engaging member is provided on the outer side of the track.

[0014] In an embodiment of the present utility model, the lamp holder slides inside the receiving space, and the lamp holder includes: a base, a plate member, and a light-emitting element.

[0015] In an embodiment of the present utility model, the base includes a body, a first sliding member and a second sliding member are respectively extended upwards on both sides of the body, a second fixing hole is provided at one end of the first sliding member or the second sliding member, and a second engaging member is provided at the other end of the first sliding member or the second sliding member.

[0016] In an embodiment of the present utility model, one side of the plate member is fixed to one side of the base, and one side of the light-emitting element is fixed to the other side of the plate member.

[0017] In an embodiment of the present utility model, a light guide plate is provided inside the frame body, and the other side of the light-emitting element is correspondingly provided on one side of the light guide plate.

[0018] In an embodiment of the present utility model, the first sliding member of the lamp holder corresponds to the inner side of the track and the second sliding member corresponds to the outer side of the track, and the lower part of the plate member corresponds to the upper part of the baffle, and the first engaging member corresponds to the second fixing hole and the second engaging member corresponds to the first fixing hole.

[0019] In an embodiment of the present utility model, the base slides on both sides of the track and the lower part of the plate member slides on the surface of the baffle, and the lamp holder is combined with the frame body by the first engaging member corresponding to the second fixing hole and the second engaging member corresponding to the first fixing hole.

[0020] In an embodiment of the present utility model, the first engaging member corresponds to the second fixing hole or the second engaging member corresponds to the first fixing hole, and the combination method is a screw hole and a screw that are screwed together, a tenon and a tenon hole that are engaged with each other, or a plug and a plug hole that are engaged with each other.

[0021] In an embodiment of the present utility model, the track is strip-shaped.

[0022] In an embodiment of the present utility model, the first engaging member or the second engaging member is a tenon or a plug.

[0023] In an embodiment of the present utility model, when the lamp holder is combined with the frame body, the light-emitting element is correspondingly provided on one side of the light guide plate.

[0024] In an embodiment of the present utility model, the light-emitting element emits a light ray in a first direction, and the light guide plate receives the light ray and emits the light ray in a second direction.

[0025] In an embodiment of the present utility model, the plate member is a printed circuit board.

[0026] In an embodiment of the present utility model, the light-emitting element is a light-emitting diode.

[0027] In an embodiment of the present utility model, the frame is a rubber frame.

[0028] In another embodiment of the present utility model, the frame is an iron frame. Description of the Drawings

[0029] Figure 1 : It is a schematic structural diagram of an embodiment of the present utility model;

[0030] Figure 2A : It is Figure 1 A schematic diagram of the combination of the first engaging member and the second fixing hole in the first partial enlarged view of

[0031] Figure 2B : It is Figure 1 A schematic diagram of the separation of the first engaging member and the second fixing hole in the first partial enlarged view of

[0032] Figure 3A : It is Figure 1 A schematic diagram of the combination of the second engaging member and the first fixing hole in the second partial enlarged view of

[0033] Figure 3B : It is Figure 1 A schematic diagram of the separation of the second engaging member and the first fixing hole in the second partial enlarged view of

[0034] Figure 4 : It is a schematic diagram of the structure and sliding direction of an embodiment of the present utility model;

[0035] Figure 5 : It is Figure 4 The first partial enlarged view of

[0036] Figure 6 : It is Figure 4 The second partial enlarged view of

[0037] Figure 7 : It is Figure 4 The third partial enlarged view of

[0038] Figure 8 : It is a left sectional view of an embodiment of the present utility model;

[0039] Figure 9 : It is a Figure 8 partial enlarged view of the left sectional view;

[0040] Figure 10 : It is a schematic diagram of the light path of an embodiment of the present utility model;

[0041] Figure 11 : It is a bottom view of the housing of an embodiment of the present utility model; and

[0042] Figure 12 : It is a Figure 11 partial enlarged view of the dashed part;

[0043] Figure 13 : It is a schematic diagram of the structure and sliding direction of another embodiment of the present utility model;

[0044] Figure 14 : It is a Figure 13 partial enlarged view;

[0045] Figure 15 : It is a bottom view of the housing of another embodiment of the present utility model; and

[0046] Figure 16 : It is a Figure 15 partial enlarged view.

[0047]

Explanation of drawing number comparison

[0048] 1: Backlight module

[0049] 10: Housing

[0050] 100: Baffle

[0051] 110: Track

[0052] 112: First coupling member

[0053] 114: First fixing hole

[0054] 120: Accommodating space

[0055] 20: Lamp holder

[0056] 200: Base

[0057] 201: Body

[0058] 203: First sliding member

[0059] 205: Second sliding member

[0060] 207: Second fixing hole

[0061] 209: Second coupling member

[0062] 220: Plate member

[0063] 240: Light-emitting element

[0064] 260: Electric wire

[0065] 280: Connector

[0066] 30: Light guide plate

[0067] 40: Light ray

[0068] 501: Figure 1 The first partial enlarged view of

[0069] 503: Figure 1 The second partial enlarged view of

[0070] 505: Figure 4 The first partial enlarged view of

[0071] 507: Figure 4 The second partial enlarged view of

[0072] 509: Figure 4 The third partial enlarged view of Detailed implementation manners

[0073] In order to have a further understanding and recognition of the structural features and achieved effects of the present utility model, specific preferred embodiments are used and described in detail as follows:

[0074] In view of the problems of the above-mentioned conventional technologies, the present utility model provides a backlight module with a replaceable light bar. The backlight module is a side-light type backlight module, which includes a frame. One surface of the frame extends outward to form a baffle, and the other surface of the frame extends toward this surface to form a track. The frame forms an accommodating space by one surface of the baffle and the inner side of the track. One end of the track is provided with a first engaging member, and the other end of the track is provided with a first fixing hole. And the first engaging member is arranged on the outer side of the track. A lamp holder slides inside the accommodating space. The lamp holder includes a base and a light-emitting element. The base is arranged corresponding to the track. The base includes a body. On both sides of the body, a first sliding member and a second sliding member extend upward respectively. One end of the second sliding member is provided with a second fixing hole, and the other end of the body is provided with a second engaging member. A plate member has one side fixed to one side of the first sliding member, and one side of the light-emitting element is fixed to the other side of the plate member. A light guide plate is arranged inside the frame. Wherein, the first sliding member of the lamp holder corresponds to the inner side of the track and the second sliding member corresponds to the outer side of the track, and the lower side of the plate member corresponds to the surface of the baffle. And the first engaging member corresponds to the second fixing hole and the second engaging member corresponds to the first fixing hole, so that the lamp holder is combined with the frame, thereby improving the product life of the display device and the backlight module by means of the technology of quickly replacing the lamp holder, and solving the problem of wasting other undamaged components in the conventional technology.

[0075] Please refer to Figure 1 , which is a schematic structural diagram of an embodiment of the present utility model. As shown in the figure, this embodiment is the first embodiment. This embodiment is a backlight module with a replaceable light bar. The backlight module 1 includes: a frame 10, a lamp holder 20, and a light guide plate 30.

[0076] Please refer to Figure 4 , Figure 5 and Figure 6 , Figure 4 is a schematic structural and sliding direction diagram of an embodiment of the present utility model. Figure 5 is Figure 4 's first partial enlarged view. Figure 6 is Figure 4 's second partial enlarged view. As shown in the figure, in the structure of the frame 10 of this embodiment, one surface of the frame 10 extends outward to form a baffle 100, and the other surface of the frame 10 extends toward this surface of the frame 10 to form a track 110. The frame 10 forms an accommodating space 120 by one surface of the baffle 100 (i.e., the upper surface of the baffle 100) and the inner side of the track 110. One end of the track 110 is provided with a first engaging member 112, and the other end of the track 110 is provided with a first fixing hole 114.

[0077] Please refer to Figure 5 ,Figure 11 and Figure 12 , Figure 11 is the bottom view of the housing of an embodiment of the present utility model, Figure 12 is Figure 11 a partially enlarged view of the dashed-line part of, as shown in the figure. In the structure of the housing 10 of this embodiment, the first engaging member 112 is disposed on an outer side of the track 110.

[0078] Please refer to Figure 4 , Figure 6 and Figure 7 , Figure 7 is Figure 4 a third partially enlarged view of, as shown in the figure. In this embodiment, the lamp holder 20 slides inside an accommodation space 120, and the structure of the lamp holder 20 includes: a base 200, a plate member 220, and a light-emitting element 240.

[0079] Continuing the above, in the structure of the lamp holder 20 of this embodiment, one end of the plate member 220 is provided with an electric wire 260 for electrically connecting to a connector 280.

[0080] Continuing the above, in the structure of the lamp holder 20 of this embodiment, the base 200 includes a body 201. First sliding members 203 and second sliding members 205 extend upward from both sides of the body 201 respectively. One end of the second sliding member 205 is provided with a second fixing hole 207, and the other end of the body is provided with a second engaging member 209.

[0081] Continuing the above, in this embodiment, one side of the plate member 220 of the lamp holder 20 is fixed to one side of the first sliding member 203, the side of the first sliding member 203 away from the second sliding member 205, and one side of the light-emitting element 240 is fixed to the other side of the plate member 220.

[0082] Continuing the above, in this embodiment, the first sliding member 203 and the second sliding member 205 of the lamp holder 20 respectively correspond to the inner side and the outer side of the track 110, and below the plate member 220 corresponds to the surface of the baffle 100.

[0083] Please refer to Figure 1 , Figure 2A , [[ID= , ​ and ​ , ​ is ​ a schematic diagram of the engagement of the first engaging member and the second fixing hole in the first partially enlarged view of, ​ is ​ a schematic diagram of the separation of the first engaging member and the second fixing hole in the first partially enlarged view of, ​ is ​Schematic diagram of the second coupling member of the second partial enlarged view being coupled to the first fixing hole ​ is ​ Schematic diagram of the second coupling member of the second partial enlarged view being separated from the first fixing hole. As shown in the figure, in this embodiment, the first coupling member 112 of the housing 10 corresponds to the second fixing hole 207 of the lamp socket 20, and the second coupling member 209 of the lamp socket 20 corresponds to the first fixing hole 114 of the housing 10.

[0084] Continuing from the above, in this embodiment, by means of the first sliding member 203 and the second sliding member 205 of the lamp socket 20 corresponding to both sides of the track 110 of the housing 10, and a lower portion of the plate member 220 of the lamp socket 20 corresponding to one surface of the baffle 100 of the housing 10, the base 200 of the lamp socket 20 slides on both sides of the track 110 of the housing 10 and a lower portion of the plate member 220 of the lamp socket 20 slides on the surface of the baffle 100 of the housing 10.

[0085] Continuing from the above, in this embodiment, by means of the first coupling member 112 corresponding to the second fixing hole 207 and the second coupling member 209 corresponding to the first fixing hole 114, the lamp socket 20 is coupled to the housing 10. Continuing from the above, in this embodiment, the track 110 of the housing 10 is elongated and is used to correspond to the first sliding member 203 and the second sliding member 205 of the lamp socket 20.

[0086] Please refer to again ​ and ​ , in this embodiment, the first coupling member 112 or the second coupling member 209 of the housing 10 is a tenon or a plug.

[0087] Please refer to ​ and ​ , ​ is a left side sectional view of an embodiment of the present utility model ​ is ​ A partial enlarged view of the left side sectional view. As shown in the figure, in this embodiment, when the lamp socket 20 is coupled to the housing 10, that is, when the first coupling member 112 corresponds to the second fixing hole 207 and the second coupling member 209 corresponds to the first fixing hole 114, the other side of the light emitting element 240 is correspondingly disposed on one surface of the light guide plate 30, and the other side of the light emitting element 240 is parallel to the surface of the light guide plate 30 to achieve the effect of avoiding optical loss.

[0088] Please refer to ​, which is a schematic diagram of the light path of an embodiment of the present utility model. As shown in the figure, in this embodiment, the light-emitting element 240 of the lamp socket 20 emits a light ray 40 in a first direction, and the surface of the light guide plate 30 receives the light ray 40. That is, the surface of the light guide plate 30 is its light incident surface, and the light ray 40 is emitted in a second direction. When the backlight module 1 of the replaceable lamp strip of the present utility model is applied to a display device, a panel of the display device is arranged above the backlight module 1 of the replaceable lamp strip of the present utility model along the second direction.

[0089] Continuing from the above, in this embodiment, the combination mode of the first engaging member 112 corresponding to the second fixing hole 207 or the second engaging member 209 corresponding to the first fixing hole 114 is a mutually screwed connection replacing screw holes and screws, mutually engaged tenons and tenon holes, or mutually engaged pins and pin holes.

[0090] Continuing from the above, in this embodiment, the plate member 220 of the lamp socket 20 is a printed circuit board.

[0091] Continuing from the above, in this embodiment, the light-emitting element 240 of the lamp socket 20 is a light-emitting diode.

[0092] Continuing from the above, in this embodiment, the frame 10 is a rubber frame.

[0093] Continuing from the above, in another embodiment, the frame 10 is an iron frame.

[0094] Please refer to again ​ , ​ , ​ , ​ , ​ and ​ , as shown in the figure. In this embodiment, the inner side and the outer side of the track 110 of the frame 10 respectively correspond to the other side of the first sliding member 203 of the lamp socket 20 close to the second sliding member 205 and the side of the second sliding member 205 close to the first sliding member 203. Since the plate member 220 of the lamp socket 20 is arranged on this side of the first sliding member 203, the plate member 220 and the light-emitting element 240 can slide inside the accommodation space 120 formed by the inner side of the track 110 and the surface of the baffle 100. And the lower part of the plate member 220 corresponds to the upper part of the baffle 100 of the frame 10, which is used to make the lamp socket 20 slide into the accommodation space 120 of the frame 10 from right to left (as shown by the arrow direction in ​ ).

[0095] Please refer to again ​ , ​ and ​, as shown in the figure, in this embodiment, when the lamp holder 20 is completely slid into the accommodation space 120 of the housing 10, the first engaging member 112 of the housing 10 engages with the second fixing hole 207 of the lamp holder 20, and the second engaging member 209 of the lamp holder 20 engages with the first fixing hole 114 of the housing 10.

[0096] Please refer to again ​ 、 ​ and ​ , as shown in the figure, in this embodiment, when the lamp holder 20 is pulled out of the housing 10, the first engaging member 112 of the housing 10 disengages from the second fixing hole 207 of the lamp holder 20, and the second engaging member 209 of the lamp holder 20 disengages from the first fixing hole 114 of the housing 10.

[0097] Please refer to again ​ 、 ​ , as shown in the figure, in this embodiment, when the lamp holder 20 is completely slid into the accommodation space 120 of the housing 10, the other side of the light-emitting element 240 is correspondingly disposed on the surface of the side of the light guide plate 30.

[0098] Please refer to ​ 、 ​ 、 ​ and ​ , ​ is a schematic diagram of the structure and sliding direction of another embodiment of the present invention, ​ is ​ a partial enlarged view of ​ is a bottom view of the housing of another embodiment of the present invention, ​ is ​ a partial enlarged view of

[0099] In summary, the present invention provides a backlight module with a replaceable light bar, which slides through the lamp holder on the track and baffle of the housing, and the first engaging member corresponds to the second fixing hole and the second engaging member corresponds to the first fixing hole, so that the lamp holder is combined with the housing. The lamp holder includes a base, a plate member and a light-emitting element, which is used to quickly replace the light-emitting element when the light-emitting element of the backlight module is damaged, so as to solve the problem that when the light-emitting element of the backlight module is damaged, the entire backlight module or display device is usually directly replaced, which reduces the service life of the product and wastes other undamaged components.

[0100] The sequence numbers of the steps in the above embodiments do not indicate the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0101] The above is only a preferred embodiment of the present utility model, and is not intended to limit the scope of implementation of the present utility model. All equivalent changes and modifications made according to the shape, structure, features and spirit described in the scope of the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A backlight module with a detachable light bar, characterized in that, The backlight module is a side-light type backlight module, and the backlight module includes: A frame body, on one side of which a baffle extends outward, on the other side of the frame body, a track extends toward this side, and the frame body forms a receiving space by one side of the baffle and the inner side of the track. A first engaging member is provided at one end of the track, and a first fixing hole is provided at the other end of the track; A lamp holder, which slides inside the receiving space, and the lamp holder includes: A base, which is provided corresponding to the track. The base includes a body, on both sides of the body, a first sliding member and a second sliding member extend upward respectively. A second fixing hole is provided at one end of the first sliding member or the second sliding member, and a second engaging member is provided at the other end of the first sliding member and the second sliding member; A plate member, one side of which is fixed to one side of the first sliding member; and A light-emitting element, one side of which is fixed to the other side of the plate member; and A light guide plate, which is arranged inside the frame body; Wherein, the first sliding member of the lamp holder corresponds to the inner side of the track and the second sliding member corresponds to the outer side of the track, so that the base slides on the track, and the lower side of the plate member corresponds to the side of the baffle, so that the plate member slides on the side of the baffle, and further the lamp holder is combined with the frame body.

2. The backlight module according to claim 1, wherein Wherein the shape of the track is a long strip.

3. The backlight module according to claim 1, characterized in that Wherein the first engaging member or the second engaging member is a tenon or a pin.

4. The backlight module according to claim 1, wherein Wherein when the first engaging member corresponds to the second fixing hole and the second engaging member corresponds to the first fixing hole, the light-emitting element is correspondingly arranged on one side of the light guide plate.

5. The backlight module according to claim 4, characterized in that, Wherein the light-emitting element emits a light ray in a first direction, and the side of the light guide plate receives the light ray and emits the light ray in a second direction.

6. The backlight module according to claim 1, wherein Wherein the first engaging member is arranged on the outer side or the inner side of the track, and the second fixing hole is arranged at the end of the first sliding member or the second sliding member corresponding to the first engaging member, so that the lamp holder is combined with the frame body.

7. The backlight module according to claim 1, characterized in that Wherein the plate member is a printed circuit board.

8. The backlight module according to claim 1, characterized in that Wherein the light-emitting element is a light-emitting diode.

9. The backlight module according to claim 1, wherein, Wherein one end of the plate member is provided with a wire, which is used for electrically connecting a connector.

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