TWI736447B - Light bar module and backlight equipment - Google Patents

Abstract

A light bar module and a backlight device. The light bar module is suitable for the backlight device having a light guide plate. The light bar module includes a base and a plurality of light-emitting units. The base has a bottom wall and at least A supporting convex portion, the bottom wall extends along a length direction and has a front surface facing the light guide plate, and the at least one supporting convex portion protrudes from the front surface to resist the light guide plate. The light-emitting units are arranged on the front surface of the bottom wall along the length direction, and the height of the light-emitting units is lower than the height of the at least one supporting protrusion to be spaced apart from the light guide plate by a certain distance.

Description

Light bar module and backlight equipment

The present invention relates to a light bar module, in particular to a light bar module capable of preventing the light-emitting unit from being squeezed or impacted. The present invention also relates to a backlight device with the light bar module.

As the times evolve and technology advances, display devices are becoming more and more popular. At present, the general display device uses the side-type light-emitting unit as the light source. Traditionally, the light-emitting unit is fixed on the side plate of the back cover, and the positioning technology is used to keep a certain distance from the light guide plate. In order to play a stable optical performance.

However, after long-term use, the light guide plate may expand due to environmental temperature changes or absorbing moisture. If the above-mentioned distance is not reserved enough, the light guide plate may be squeezed against the light-emitting unit, resulting in damage to the light-emitting unit. Light-emitting elements such as light-emitting diodes cause displacement or even damage.

Therefore, one objective of the present invention is to provide a light bar module with the function of protecting the light-emitting unit to solve the above-mentioned problems.

Therefore, in some embodiments, the light bar module of the present invention is suitable for a backlight device having a light guide plate. The light bar module includes a base and a plurality of light-emitting units, the base has a bottom wall, and At least one supporting protrusion, the bottom wall extends along a length direction and has a front surface facing the light guide plate, and the at least one supporting protrusion protrudes from the front surface to resist the light guide plate. The light-emitting units are arranged on the front surface of the bottom wall along the length direction, and the height of the light-emitting units is lower than the height of the at least one supporting protrusion to be spaced apart from the light guide plate by a certain distance.

In some embodiments, the bottom wall further has a first side and a second side located on opposite sides in the length direction, and the base further has a first side extending along the length direction and connected to the bottom wall. Side front wall, and a plurality of reinforcing ribs protruding from the front of the bottom wall and connected to the front wall, the reinforcing ribs are arranged at intervals along the length direction and two adjacent reinforcing ribs are respectively located in one of the light emitting Both sides of the unit.

In some embodiments, the base further has a rear wall extending along the length direction corresponding to the second side and connected to the top side of the reinforcing ribs, so that the rear wall is farther away from the reinforcing ribs The front direction protrudes and is spaced from the bottom wall.

In some embodiments, the base further has a plurality of engaging grooves formed on the front surface of the bottom wall and respectively corresponding to the light-emitting units and located below the rear wall. Each light-emitting unit includes a lamp holder and a set In the light-emitting diode in the lamp holder, the lamp holder has an engaging portion that is detachably engaged with the corresponding engaging groove.

Another object of the present invention is to provide a backlight device with the aforementioned light bar module.

Therefore, in some embodiments, the backlight device of the present invention includes a light guide plate and a light bar module. The light guide plate has a light emitting surface, a bottom surface opposite to the light emitting surface, and a connection between the light emitting surface and the bottom surface. The light-incident surface on one side. The light bar module is arranged adjacent to the light incident surface of the light guide plate, and includes a base and a plurality of light-emitting units. The base has a bottom wall and at least one supporting protrusion, and the bottom wall extends along a length direction It also has a front surface facing the light guide plate, and the at least one supporting protrusion protrudes from the front surface to resist the light incident surface of the light guide plate. The light-emitting units are arranged on the front surface of the bottom wall along the length direction, and the height of the light-emitting units is lower than the height of the at least one supporting protrusion to be spaced apart from the light guide plate by a certain distance.

In some embodiments, the backlight device of the present invention further includes a reflective sheet connected to the bottom surface of the light guide plate.

In some embodiments, the backlight device of the present invention further includes a back cover, and the light bar module, the light guide plate and the reflective sheet are located in the back cover.

The present invention has at least the following effects: by supporting the protrusions against the light guide plate, the light-emitting units can be kept at a certain distance from the light guide plate, so as to prevent the light guide plate from expanding and squeezing due to changes in ambient temperature or moisture absorption. Pressing on the light-emitting units causes displacement or even damage of the light-emitting units.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numbers.

1 to 4, a first embodiment of the backlight device 100 of the present invention includes a light guide plate 101, a reflective sheet 102 connected to the light guide plate 101, a back cover 103, a removable ground and the back The front cover 104 connected to the cover 103, a light bar module 200, and a circuit board 105 arranged between the light bar module 200 and the back cover 103. The light bar module 200, the light guide plate 101 and the reflective sheet 102 are located in the back cover 103. The light guide plate 101 has a light exit surface 101a, a bottom surface 101b opposite to the light exit surface 101a, and a light entrance surface 101c connecting the light exit surface 101a and the bottom surface 101b. The bottom surface 101b is connected. The light bar module 200 is arranged adjacent to the light incident surface 101 c of the light guide plate 101.

The light bar module 200 includes a base 1 and a plurality of light-emitting units 2 provided on the base 1. The base 1 is generally elongated and extends in a length direction L. The base 1 has a bottom wall 11, a plurality of supporting protrusions 12, a plurality of reinforcing ribs 13, a front wall 14, and a rear wall 15. , And multiple engagement slots 16.

The bottom wall 11 extends along the length direction L and has a front surface 111 facing the light incident surface 101 c of the light guide plate 101, and a first side 112 and a second side 113 located on opposite sides in the length direction L. The light emitting units 2 are arranged on the front surface 111 of the bottom wall 11 along the length direction L, so that the light emitted by the light emitting units 2 enters the light guide plate 101 from the light incident surface 101 c and exits from the light exit surface 101.

5 and 6, the supporting protrusions 12 protrude from the front surface 111 to resist the light guide plate 101, the supporting protrusions 12 extend from the first side 112 to the second side 113, but not With this limitation, the supporting protrusion 12 can be only one piece.

3 to 5, the front wall 14 extends along the length direction L and connects the first side 112 of the bottom wall 11 and the supporting protrusions 12 to strengthen the strength of the base 1 in the length direction L. In addition, The reinforcing ribs 13 protrude from the front surface 111 of the bottom wall 11 and are connected to the front wall 14 to further strengthen the structural strength of the base 1. In the first embodiment, the reinforcing ribs 13 extend from the first side 112 to the second side 113, and are arranged at intervals along the length direction L, and two adjacent reinforcing ribs 13 are respectively located at one of them. Both sides of the light-emitting unit 2. The aforementioned supporting protrusions 12 can also be used as the strengthening ribs 13, that is, the positions of the supporting protrusions 12 coincide with the positions of the partial strengthening ribs 13, and the supporting protrusions 12 are compared with other strengthening ribs 13 More protruding.

The front wall 14, the reinforcing ribs 13, the supporting protrusions 12 and the bottom wall 11 jointly define a plurality of accommodating spaces 141, and each accommodating space 141 is used for accommodating a light-emitting unit 2. The rear wall 15 extends along the length direction L and corresponds to the second side 113 and is connected to the top sides of the reinforcing ribs 13 and the supporting protrusions 12, so that the rear wall 15 is farther away from the reinforcing ribs 13 The front surface 111 protrudes in the direction and is spaced apart from the bottom wall 11. The rear wall 15, the reinforcing ribs 13, the supporting protrusions 12 and the bottom wall 11 jointly define a plurality of installation openings 151. The light-emitting units 2 respectively enter the corresponding accommodating space 141 through the installation openings 151. The engaging grooves 16 are formed on the front surface 111 of the bottom wall 11 and respectively correspond to the light emitting units 2 and are located below the rear wall 15.

In conjunction with FIG. 2, the height of the light-emitting units 2 is lower than the height of the supporting protrusions 12 to be spaced a certain distance from the light guide plate 101 to prevent the light guide plate 101 from being used for a long time due to environmental temperature changes or absorbing humidity The air expands and squeezes to the light-emitting unit 2, thereby affecting the optical performance of the light-emitting unit 2. In the first embodiment, the front wall 14 of the base 1 is adjacent to the front cover 104, and the rear wall 15 of the base 1 is adjacent to the reflective sheet 102 and located behind the light guide plate 101.

Each light-emitting unit 2 includes a lamp holder 21 and a light-emitting diode 22 disposed in the lamp holder 21, and the lamp holder 21 has an engaging portion 211 that is detachably engaged with the corresponding engaging groove 16, and The engaging portion 211 includes two protruding corners 211a provided on the bottom surface of the lamp holder 21, and the distance between the protruding corners 211a corresponds to the width of the engaging groove 16, so that the protruding corners 211a can be clamped to the card合槽16.

Referring to FIG. 7, in the first embodiment, in order to make assembly more convenient, the light bar module 200 is composed of multiple sections, that is, the base 1 can be made in sections according to the length of the light guide plate 101 to be corresponding. After the light-emitting unit 2 is individually arranged in each section, it is assembled into the backlight device 100. In a modified implementation aspect, the base 1 can also be made in one piece without being segmented, and can be adjusted according to usage requirements and the actual length of the base 1.

8 and 9, a second embodiment of the backlight device 100 of the present invention, the second embodiment is similar to the first embodiment, the difference lies mainly in the structure of the light bar module 200, the following further describes the second embodiment The difference between the embodiment and the first embodiment.

In the second embodiment, the rear wall 15 of the light bar module 200 protrudes away from the front surface 111 and defines a front groove 151 and a rear groove 152. Specifically, the front groove 151 is formed by the back wall 15 facing the first side 112 facing the second side 113 concavely. The rear groove 152 is formed by recessing the rear wall 15 and the second side 113 on the same side toward the first side 112, and the cross section of the rear wall 15 is almost similar to the Arabic numeral "1", but not with This is a limitation.

8 and 9, in the second embodiment, the light bar module 200 further includes a gasket 3 and a back glue 4, the gasket 3 is disposed in the front groove 151 and abuts against the reflective sheet 102. The adhesive 4 is disposed in the rear groove 152 and connected to the circuit board 105. The adhesive 4 is connected to the circuit board 105 in a pasting manner, for example, but it is not limited thereto.

In summary, the light bar module 200 proposed by the present invention supports the convex portion 12 against the light guide plate 101, so that the light emitting units 2 can be kept at a certain distance from the light guide plate 101 to prevent the light guide plate 101 101 expands and squeezes to the light-emitting units 2 due to environmental temperature changes or absorbing moisture, causing the light-emitting units 2 to be displaced or even damaged.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

1: pedestal 11: bottom wall 111: front 112: first side 113: second side 12: Support convex part 13: Strengthen ribs 14: front wall 141: Housing Space 15: back wall 151: Installation opening 16: snap slot 2: Light-emitting unit 21: Lamp holder 211: Carding part 211a: convex corner 22: Light-emitting diode 3: Gasket 4: Adhesive 100: Backlight device 101: light guide plate 101a: Glossy surface 101b: bottom surface 101c: Glossy surface 102: reflective sheet 103: back cover 104: front cover 105: circuit board 200: light bar module L: length direction

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: FIG. 1 is an incomplete three-dimensional cross-sectional schematic diagram of a first embodiment of a backlight device of the present invention; Figure 2 is an incomplete schematic cross-sectional view of the first embodiment; 3 is a perspective schematic diagram of an incomplete light bar module of the first embodiment; 4 is an incomplete three-dimensional schematic diagram illustrating the connection relationship between a light-emitting unit and a base of the light bar module of the first embodiment; FIG. 5 is an incomplete schematic top view of the light bar module of the first embodiment; 6 is an incomplete three-dimensional schematic diagram illustrating the relative position of a light guide plate and the light bar module of the first embodiment; FIG. 7 is an incomplete three-dimensional schematic diagram illustrating the light bar module of the first embodiment; FIG. 8 is a schematic perspective view of an incomplete light bar module of a second embodiment of the backlight device of the present invention; and Fig. 9 is an incomplete three-dimensional cross-sectional view of the second embodiment.

1: pedestal

11: bottom wall

111: front

112: first side

113: second side

12: Support convex part

13: Strengthen ribs

14: front wall

141: Housing Space

15: back wall

151: Installation opening

16: snap slot

2: Light-emitting unit

21: Lamp holder

211: Carding part

211a: convex corner

22: Light-emitting diode

200: light bar module

L: length direction

Claims (8)

A light bar module is suitable for a backlight device with a light guide plate. The light bar module includes: a base with a bottom wall, a front wall, a plurality of reinforcing ribs, and at least one supporting protrusion, The bottom wall extends along a length direction and has a front face facing the light guide plate and a first side and a second side located on opposite sides in the length direction, and the front wall extends along the length direction and is connected to the bottom wall On the first side, the reinforcing ribs protrude from the front surface of the bottom wall and are connected to the front wall, the reinforcing ribs are arranged at intervals along the length direction, and two adjacent reinforcing ribs are respectively located in one of the light-emitting units On both sides, the at least one supporting protrusion protrudes from the front surface to resist the light guide plate; and a plurality of light-emitting units are arranged on the front surface of the bottom wall along the length direction, and the height of the light-emitting units is lower than The height of the at least one supporting protrusion is separated from the light guide plate by a certain distance. The light bar module according to claim 1, wherein the base further has a rear wall extending along the length direction corresponding to the second side and connected to the top side of the reinforcing ribs, so that the rear wall is relatively The reinforcing ribs protrude away from the front surface and are spaced apart from the bottom wall. The light bar module according to claim 2, wherein the base further has a plurality of engaging grooves formed on the front surface of the bottom wall and respectively corresponding to the light-emitting units and located below the rear wall, and each light-emitting unit It comprises a lamp holder and a light-emitting diode arranged in the lamp holder, and the lamp holder has an engaging part detachably engaging with the corresponding engaging groove. A backlight device comprising: a light guide plate having a light emitting surface, a bottom surface opposite to the light emitting surface, and a light incident surface connecting the light emitting surface and one side of the bottom surface; and a light bar module adjacent to each other The light guide plate is provided with a light incident surface and includes a base with a bottom wall, a front wall, a plurality of reinforcing ribs, and at least one supporting protrusion. The bottom wall extends along a length direction and has a direction toward the The front surface of the light guide plate and a first side and a second side on opposite sides in the length direction, the front wall extends along the length direction and connects to the first side of the bottom wall, and the reinforcing ribs extend from the bottom The front surface of the wall protrudes and connects to the front wall, the reinforcing ribs are arranged at intervals along the length direction and two adjacent reinforcing ribs are respectively located on both sides of one of the light-emitting units, and the at least one supporting protrusion protrudes from the front surface It extends to abut the light-incident surface of the light guide plate, and a plurality of light-emitting units are arranged on the front of the bottom wall along the length direction, and the height of the light-emitting units is lower than the height of the at least one supporting protrusion. A certain distance from the light guide plate. The backlight device according to claim 4, further comprising a reflective sheet connected to the bottom surface of the light guide plate. The backlight device according to claim 5, further comprising a back cover, and the light bar module, the light guide plate and the reflection sheet are located in the back cover. The backlight device according to claim 4, wherein the base further has a rear wall extending along the length direction corresponding to the second side and connected to the top side of the reinforcing ribs, so that the rear wall is larger than the The reinforcing rib protrudes away from the front surface and is spaced from the bottom wall. According to the backlight device of claim 7, the base further has a plurality of engaging grooves formed on the front of the bottom wall and respectively corresponding to the light-emitting units and located below the rear wall, and each light-emitting unit includes a lamp holder And a light-emitting diode arranged in the lamp holder, the lamp holder having an engaging part detachably engaging with the corresponding engaging groove.

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