TWI431374B - Light source fixing member and backlight module - Google Patents

Description

Light source fixing member and backlight module

The present invention relates to a light source fixing member, and more particularly to a backlight module having the foregoing light source fixing member.

The conventional direct-lit backlight module usually uses a screw fixing method to fix a light emitting diode (LED) light bar on the back plate, and uses a LED lens cap to reduce the thickness of the module. And the number of light-emitting diodes. The light-emitting diode lens is fixed directly above the light-emitting diode by being adhered to a double-sided tape. However, taking a 40-inch LCD TV backlight module as an example, 22 LED light strips are usually required, and at least 3 screws are required for each LED strip to assemble all the LEDs. The light bar requires a total of 66 screws, and the electric screwdriver is used to repeatedly suck and lock the screws up to 66 times, so the assembly process is rather cumbersome and time-consuming. In addition, when the double-sided adhesive is used to fix the light-emitting diode lens, since there is no positioning reference when pasting, it is easy to cause poor positioning and thus affect the optical performance, and the light-emitting diode is torn off once the re-work is required. The lens is usually easily damaged.

Other conventional technologies, such as Taiwan Patent Publication No. TWM371308, disclose a light-emitting diode module in which a light-emitting diode of a light-emitting diode module is disposed on a circuit board, and a secondary lens is used to cover the light-emitting diode. The joint portion of the lens and the fixing portion of the circuit board are connected by bonding, snapping, locking or fitting. In addition, a backlight module is disclosed in the US Patent Publication No. US20060279946. The fixing member of the backlight module has a hook to fix the light source. However, these prior art techniques do not address designs that address the aforementioned problems encountered in assembly.

The invention provides a light source fixing member and a backlight module. The light source fixing member and the backlight module have at least one advantage of simplifying assembly process, saving man-hours, improving assembly efficiency, being easy to rework, and reducing manufacturing cost.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein.

An embodiment of the present invention provides a backlight module including a back plate, at least one light emitting diode light bar, at least one light source fixing member, and at least one light emitting diode lens. At least one card hole is formed on the back plate, and the light emitting diode light bar is disposed on the back plate. The light source fixing member is disposed on the back plate and includes a base, at least one first fastening structure and at least one second fastening structure. The base has a first face and a second face disposed opposite each other, and the second face faces the back plate. The first fastening structure is formed on the first surface, and the second fastening structure is formed on the second surface. The second fastening structure is embedded in the hole of the back plate to fix the light source fixing member to the back plate and to limit the light emitting diode light bar between the back plate and the light source fixing member. The light emitting diode lens is embedded in the first fastening structure to be fixed on the light source fixing member.

In one embodiment, the first fastening structure includes a plurality of hooks distributed in different orientations. These hooks are, for example, distributed on the circumference of the same virtual circle or the same virtual ellipse, and the light-emitting diode lens has an outer contour corresponding to a virtual circle or a virtual ellipse.

In an embodiment, the second fastening structure comprises at least one hook, for example, two hooks disposed opposite to each other.

In one embodiment, the light emitting diode strip forms at least one through hole, and the through hole is formed at a position overlapping the card hole of the back board.

Another embodiment of the present invention provides a light source fixture comprising a base, at least one first fastening structure, and at least one second fastening structure. The base has a first surface and a second surface, the second surface faces a back plate and the back plate is formed with at least one hole. The first fastening structure is formed on the first surface and defines a card slot, and the card slot is embedded in a light emitting diode lens. The second fastening structure is formed on the second surface, and the second fastening structure is embedded in the hole of the back plate to fix the light source fixing member on the back plate and the light-emitting diode lamp strip is limited to the back plate and the light source fixing member. between.

In summary, the light source fixing member and the backlight module of the embodiment of the present invention have at least one of the following advantages: by the design of the above embodiment, the light emitting diode lens is fixed by using a light source fixing member including, for example, a hook structure. And the light-emitting diode light bar can limit the light-emitting diode light bar to the back plate through a simple snap action, so that the traditional screw locking method can be replaced, the assembly process and the process are simplified, and the working hours are saved. Reduce the cost of manufacturing. Furthermore, the light-emitting diode lens is also fixed by means of a snap-on method instead of being conventionally adhered to the double-sided tape, so that it is not only easy to position and easy to remove heavy work, but also can reduce man-hours and improve assembly efficiency.

Other objects and advantages of the present invention will become apparent from the technical features disclosed herein. The above and other objects, features, and advantages of the invention will be apparent from

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the embodiments of the invention. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

1 is an exploded view of a backlight module according to an embodiment of the present invention, and FIG. 2 is a schematic view of the backlight module of FIG. 1 assembled. As shown in FIG. 1 and FIG. 2 , the backlight module 10 includes a back plate 12 , at least one light emitting diode light bar 14 , at least one light source fixing member 16 , and at least one light emitting diode lens 18 . For ease of explanation, FIGS. 1 and 2 depict only a single light-emitting diode strip 14 and a single light source fixture 16. At least one card hole 121 is formed on the back plate 12 and the light emitting diode light bar 14 is disposed on the back plate 12. The light source fixing member 16 is disposed on the back plate 12 and includes a base portion 22 , at least one first fastening structure 24 and at least one second fastening structure 26 . The base portion 22 has a first surface 221 and a second surface 222 opposite to each other, and the second surface 222 faces the back plate 12. The first fastening structure 24 is formed on the first surface 221 , and the second fastening structure 26 is formed on the second surface 222 . During assembly, the second fastening structure 26 is embedded in the hole 121 of the back plate 12 to fix the light source fixing member 16 to the back plate 12 and to limit the LED light bar 14 to the back plate 12 and the light source fixing member. The light-emitting diode lens 18 is embedded in the first fastening structure 24 to be fixed to the light source fixing member 16.

Referring to FIG. 3 , in an embodiment, the first fastening structure 24 includes three hooks 241 , 242 and 243 distributed in different orientations. For example, if the LED lens 18 has a circular or elliptical shape. The outer hooks 241, 242 and 243 may be distributed on the circumference of the same virtual circular or virtual ellipse corresponding to the outer shape of the LED lens 18 and define a card slot R (the space surrounded by the circle S) When the LED lens 18 is embedded in the card slot R of the first fastening structure 24, the hooks 241, 242, and 243 can abut the LED lens 18 from three different orientations to make the LED lens 18 is fixedly secured to the light source fixture 16. Conversely, the light-emitting diode lens 18 can be easily removed by pulling one of the hooks 241, 242, and 243. Thereby, the first fastening structure 24 can obtain the effect of fixing the LED lens 18, and the shape of the first fastening structure 24 is not limited. For example, the first fastening structure 24 can also include only two hooks on a straight line. The two hooks respectively abut the LED lens 18 from both sides, and a fixing effect can also be obtained. In addition, referring to FIG. 1 and FIG. 4, in an embodiment, the second fastening structure 26 may include two hooks 261 and 262 disposed away from each other, and the LED strip 14 forms at least one through hole. 141, and the through hole 141 is formed at a position overlapping the hole 121 of the back plate 12. When assembled, the hooks 261 and 262 of the second fastening structure 26 pass through the through holes 141 of the LED strip 14 and are inserted into the holes 121 of the back plate 12 to fix the light source fixing member 16 to the back plate. 12, and the light-emitting diode light bar 14 is limited between the back plate 12 and the light source fixing member 16. Of course, the type of the second fastening structure 26 is also not limited, for example, a single hook may be included, and the above-mentioned limit and fixing effect may also be obtained. In addition, the light-emitting diode light bar 14 may not form the through hole 141, and the hooks 261 and 262 of the second fastening structure 26 may be directly embedded in the card hole 121 on the back plate 12, and then the base 22 is closely pressed against the light-emitting diode. The body light bar 14 can also limit the light-emitting diode light bar 14 between the back plate 12 and the light source fixing member 16.

As shown in FIG. 5, a plurality of LED strips 14 and LEDs 18 can be fixed to the back panel 12 to form a backlight module 10 by using the light source fixtures 16 of the above embodiments. In summary, the light source fixing member and the backlight module of the embodiment of the present invention have at least one of the following advantages: by the design of the above embodiment, the light emitting diode lens is fixed by using a light source fixing member including, for example, a hook structure. And the light-emitting diode light bar can limit the light-emitting diode light bar to the back plate through a simple snap action, so that the traditional screw locking method can be replaced, the assembly process and the process are simplified, and the working hours are saved. Reduce the cost of manufacturing. Furthermore, the light-emitting diode lens is also fixed by means of a snap-on method instead of being conventionally adhered to the double-sided tape, so that it is not only easy to position and easy to remove heavy work, but also can reduce man-hours and improve assembly efficiency.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention.

10. . . Backlight module

12. . . Backplane

121. . . Card hole

14. . . LED light bar

141. . . Through hole

16. . . Light source fixture

18. . . Light-emitting diode lens

twenty two. . . Base

221. . . First side of the base

222. . . Second side of the base

twenty four. . . First fastening structure

241, 242, 243. . . The hook

26. . . Second fastening structure

261, 262. . . The hook

R. . . Card slot

S. . . circumference

1 is an exploded view of a backlight module according to an embodiment of the invention.

2 is a schematic view of the backlight module of FIG. 1 assembled.

3 is a schematic view of a first fastening structure in accordance with an embodiment of the present invention.

4 is a schematic view of a second fastening structure in accordance with an embodiment of the present invention.

FIG. 5 is a schematic diagram of a backlight module according to an embodiment of the invention.

10. . . Backlight module

12. . . Backplane

121. . . Card hole

14. . . LED light bar

141. . . Through hole

16. . . Light source fixture

18. . . Light-emitting diode lens

twenty two. . . Base

221. . . First side of the base

222. . . Second side of the base

twenty four. . . First fastening structure

26. . . Second fastening structure

Claims (12)

A backlight module includes: a backplane, wherein the backplane is formed with at least one card hole; at least one light-emitting diode light strip is disposed on the backboard; and at least one light source fixing component is disposed on the backplane And comprising: a base having a first surface and a second surface disposed opposite to each other, wherein the second surface faces the back plate; at least one first fastening structure formed on the first surface; and at least one a second fastening structure is formed on the second surface, the second fastening structure is embedded in the hole of the back plate to fix the light source fixing member on the back plate and the light-emitting diode lamp strip is limited The back plate is coupled to the light source fixing member; and at least one light emitting diode lens is embedded in the first fastening structure to be fixed to the light source fixing member. The backlight module of claim 1, wherein the first fastening structure comprises a plurality of hooks distributed in different orientations. The backlight module of claim 2, wherein the hooks are distributed on a circumference of the same virtual circle or the same virtual ellipse, and the LED lens has a corresponding virtual circle or the virtual ellipse An outline. The backlight module of claim 1, wherein the second fastening structures comprise at least one hook. The backlight module of claim 4, wherein the second fastening structures comprise two hooks disposed away from each other. The backlight module of claim 1, wherein the LED strip forms at least one through hole, and the through hole is formed at a position coincident with the card hole of the back plate. A light source fixing member comprises: a base having an opposite first surface and a second surface, the second surface facing a back plate and the back plate is formed with at least one card hole; at least one first fastening structure, Forming on the first surface and defining a card slot, and the card slot is embedded in a light emitting diode lens; and at least one second fastening structure is formed on the second surface, the second fastening structure is embedded The hole of the back plate fixes the light source fixing member to the back plate and limits a light emitting diode light bar between the back plate and the light source fixing member. The light source fixture of claim 7, wherein the first fastening structure comprises a plurality of hooks located in different orientations. The light source fixing member according to claim 8, wherein the hooks are distributed on a circumference of the same virtual circle or the same virtual ellipse, and the light emitting diode lens has a corresponding virtual circle or the virtual ellipse. An outline. The light source fixture of claim 7, wherein the second fastening structures comprise at least one hook. The light source fixture of claim 10, wherein the second fastening structures comprise two hooks disposed away from each other. The light source fixing member according to claim 7, wherein the light emitting diode light bar forms at least one through hole, and the through hole is formed at a position overlapping the hole of the back plate.