CN1560930A - Light source module - Google Patents

Abstract

A light source module comprises a circuit board, a light emitting diode and a light guide cover (shell). The light guide cover is arranged on the circuit board in a manner of covering the light emitting diode, and the light guide cover is provided with a first light guide outlet and a second light guide outlet which are opposite. The first light guide outlet and the second light guide outlet are positioned at two sides of the light emitting diode, and the light guide cover is used for guiding the light of the light emitting diode to be emitted to the outside through the first light guide outlet and the second light guide outlet so as to form bidirectional light guide.

Description

Light source module

【Technical field】

The present invention relates to a light source module, and in particular to a light source module capable of guiding light in two directions.

【Background technique】

Light emitting diode (Light Emitting Diode, LED) has many advantages, such as fast response speed, long luminous life, small size, low power consumption, low heat generation and high reliability, so it has gradually become the main light emitting diode of backlight module (backlight module). components. Among them, many light emitting diodes can be arranged into an array light source module.

Please refer to FIG. 1 , which shows a partial top view of a conventional light source module. In FIG. 1 , the light source module 100 at least includes a circuit board 101 and several LEDs 102 . These light emitting diodes 102 are arranged along a straight line, like a row of light source groups, and are arranged on the circuit board 101 . Since the light provided by each LED 102 is scattered in 360 degrees, when the LEDs 102 are arranged in a straight line, the light between two adjacent LEDs 102 will definitely block and interfere with each other. As a result, an ineffective light-emitting region 106 is generated between two adjacent light-emitting diodes 102 .

In addition, the angular size of the effective light-emitting area 104 of each light-emitting diode 102 is determined by the density of the arrangement of these light-emitting diodes 102 . That is, the larger the distance between two adjacent LEDs 102 is, the larger the angle of the effective light emitting region 104 is. On the contrary, the existence of the invalid light-emitting area 106 will make the light of these light-emitting diodes 102 unable to be fully utilized, which greatly affects the brightness quality of the light source module 100 .

【Content of invention】

In view of this, the purpose of the present invention is to provide a light source module, which is designed to cover the light emitting diodes with a light guide cover, which can guide the light of the light emitting diodes to be emitted to the outside through the light guide port of the light guide cover, solving the problem of traditional The problem of the invalid light-emitting area produced by the light source module can be solved, and the brightness quality of the light source module can be greatly improved.

According to the object of the present invention, a light source module is provided, which includes a circuit board, a light emitting diode and a light guide cover (shell). The LED is configured on the circuit board to provide light. The light guide cover is arranged on the circuit board in such a way as to cover the LED, and the light guide cover has a first light export port and a second light export port opposite to each other. The first light export port and the second light export port are located on both sides of the light emitting diode, and the light guide cover is used to guide the light of the light emitting diode to exit to the outside through the first light export port and the second light export port.

According to still another object of the present invention, a light source module is provided, including a circuit board, a row of light source groups, two light guide plates and several light guide covers. The row of light source groups has several light emitting diodes, and these light emitting diodes are arranged on the circuit board. The two light guide plates are arranged outside the two sides of the row of light source groups. Each light guide cover is arranged on the circuit board in a manner of covering the corresponding LED, and each light guide cover has a first light export port and a second light guide port opposite to each other. The first light export port and the second light export port are located on both sides of each corresponding light emitting diode, and the first light export port and the second light export port of each light guide cover are correspondingly facing the sides of the two light guide plates. Each light guide cover is used to guide the light of the corresponding light emitting diode to exit into the two light guide plates through the first light guide port and the second light guide port.

【Description of drawings】

In order to make the above-mentioned purposes, features, and advantages of the present invention more comprehensible, a preferred embodiment is specifically cited below, and in conjunction with the accompanying drawings, the detailed description is as follows:

FIG. 1 is a partial top view of a conventional light source module.

FIG. 2A is a schematic perspective view of the light source module according to the first embodiment of the present invention.

FIG. 2B is a top view of the light source module shown in FIG. 2A .

FIG. 2C shows a cross-sectional view of the light source module viewed along the section line 2C-2C' in FIG. 2B.

FIG. 3 is a top view of a light source module according to a second embodiment of the present invention.

【Detailed ways】

Embodiment one

Please refer to FIGS. 2A to 2C at the same time. FIG. 2A is a schematic perspective view of a light source module according to the first embodiment of the present invention. FIG. 2B is a top view of the light source module in FIG. 2A , and FIG. 2C is a schematic view along FIG. 2B The sectional view of the light source module viewed by the sectional line 2C-2C'.

In FIGS. 2A˜2C , the light source module 200 includes a circuit board 202 , a light emitting diode 204 and a light guide cover (shell) 206 . The LED 204 is disposed on the circuit board 202 for providing light. The light guide cover 206 is disposed on the circuit board 202 to cover the LED 204 , and the light guide cover 206 has a first light export port 208 and a second light export port 210 opposite to each other.

If further subdivided, the light guide cover 206 includes a first arc-shaped light guide cover 212 and a second arc-shaped light guide cover 214 . One end of the first arc-shaped light guide cover 212 and the circuit board 202 form a first light guide port 208 . On the other hand, one end of the second arc-shaped light guide cover 214 is connected to the other end of the first arc-shaped light guide cover 212, and the other end of the second arc-shaped light guide cover 214 forms a second light beam with the circuit board 202. Export port 214.

The LED 204 is located in the opening 216 formed by the junction of the first curved light guide cover 212 and the second curved light guide cover 214 and the circuit board 202 . The first light export port 208 and the second light export port 210 are located on both sides of the light emitting diode 204, and the light guide cover 206 is used to guide the light of the light emitting diode 204 to pass through the first light export port 208 and the second light export port. 210 emits to the outside to form a bidirectional light guide.

The size of the first light export port 208 is equal to the size of the second light export port 210 , or they may not be equal. Moreover, the size of the opening 216 at the junction of the first arc-shaped light guide cover 208 and the second arc-shaped light guide cover 210 is smaller than the size of the first light guide port 208 and the second light guide port 210, so that the light guide cover 206 is just like the upper half structure of a spindle body. In this way, not only the light from the light emitting diode 204 is scattered to a predetermined direction through the preset arcs of the first arc-shaped light guide cover 208 and the second arc-shaped light guide cover 210 , but also the light from the light source module 200 can be completely and effectively utilized. .

But those who are familiar with this technology can also understand that the technology of the present invention is not limited thereto. For example, the material of the light guide cover 206 is aluminum, and it can be an integrally formed structure, and coated on the inner wall of the light guide cover 206. A layer of protection. In addition, a reflective layer can be sputtered on the inner wall of the light guide cover 206, and the reflective layer is a metal layer with high conductivity, such as copper, silver and aluminum.

Embodiment two

Please refer to FIG. 3 , which shows a top view of a light source module according to a second embodiment of the present invention. The light source module 400 includes a circuit board 402 , a row of light source groups 404 , light guide plates 406 and 408 , and several light guide covers 206 as described in the first embodiment. The row of light source groups 404 has several light emitting diodes 204 described in the first embodiment, and is arranged on the circuit board 402 . The light guide plates 404 and 406 are disposed outside the two sides of the row of light source groups 404 .

Because the light emitting diodes 204 are arranged in a straight line, two adjacent light emitting diodes 204 will form an invalid light emitting area between each other. In order to eliminate the existence of the invalid light emitting area, each light emitting diode 204 is covered with a corresponding light guide cover 206 respectively. In other words, each light guide cover 206 is disposed on the circuit board 402 to cover the corresponding LED 204 .

Since each light guide cover 206 has a first light export port 208 and a second light export port 210 opposite to each other, and the first light guide port 208 and the second light guide port 210 of each light guide cover are located at each corresponding light emitting port. On both sides of the diode 204 , the first light guide port 208 and the second light guide port 210 of each light guide cover 206 face the side surfaces of the light guide plates 406 and 408 respectively. Therefore, each light guide cover 206 can guide the light of the corresponding light emitting diode 204 to be emitted into the light guide plate 406 and the light guide plate 408 through the first light export port 208 and the second light guide port 210, which greatly improves the light source module 400. brightness quality.

In this way, the light scattered by the row of light source groups 404 will be guided away from the ineffective light-emitting area and the intensity of the light incident on the light guide plate 104 and the light guide plate 106 will be increased. On the other hand, the purpose of bidirectional light output can also be achieved.

The light source module disclosed in the above-mentioned embodiments of the present invention is designed to cover the light-emitting diodes with the light guide cover, which can guide the light of the light-emitting diodes to exit to the outside through the two light guide ports of the light guide cover, which solves the problem of traditional light source modules. The problem of the generated invalid light-emitting area can also greatly improve the brightness quality of the light source module without increasing the number of light-emitting diodes.

In summary, although the present invention has been disclosed as above with a preferred embodiment, it is not intended to limit the present invention, and any person skilled in the art can make various modifications without departing from the spirit and scope of the present invention Therefore, the protection scope of the present invention should be defined according to the claims.

Claims (16)

1. light source module comprises at least:

One circuit board;

One light-emitting diode is to be disposed on this circuit board, in order to light to be provided; And

One light-guiding shade (shell), system is disposed on this circuit board in the mode that covers this light-emitting diode, this light-guiding shade has one first relative light export mouth and one second light export mouth, this first light export mouth and this second light export mouth system are positioned at the both sides of this light-emitting diode, and this light-guiding shade penetrates to the external world via this first light export mouth and this second light export mouth in order to the light of guiding this light-emitting diode.

2. light source module according to claim 1 is characterized in that, this light-guiding shade comprises:

One first arc light-guiding shade, one end system forms this first light export mouth with this circuit board; And

One second arc light-guiding shade, one end system is connected with the other end of this first arc light-guiding shade, and the other end system of this second arc light-guiding shade forms this second light export mouth with this circuit board.

3. light source module according to claim 1 is characterized in that, the size of this first light export mouth is an equal and opposite in direction about and this second light export mouth.

4. light source module according to claim 3 is characterized in that, the intersection of this first arc light-guiding shade and this second arc light-guiding shade and the size of the formed opening of this circuit board system are less than the size of this first light export mouth and this second light export mouth.

5. light source module according to claim 1, it is characterized in that, system can be provided with one first light guide plate and one second light guide plate outside the both sides of this light-emitting diode, and the side system of this first light guide plate is towards this first light export mouth, and the side of this second light guide plate is towards this second light export mouth.

6. light source module according to claim 1 is characterized in that, the material of this light-guiding shade is an aluminium.

7. light source module according to claim 6 is characterized in that, is coating one protective layer on the inwall of this light-guiding shade

8. light source module according to claim 1 is characterized in that, is sputter one reflector on the inwall of this light-guiding shade.

9. light source module comprises:

One circuit board;

One line light source group has a plurality of light-emitting diodes, and those light-emitting diodes pipings are disposed on this circuit board, in order to light to be provided;

Two light guide plate are to be arranged at outside two sides of this line light source group; And

A plurality of light-guiding shades, respectively this light-guiding shade is that the mode of this light-emitting diode is disposed on this circuit board to cover respectively, respectively this light-guiding shade has one first relative light export mouth and one second light export mouth, respectively this of this light-guiding shade first light export mouth and this second light export mouth system is positioned at the respectively both sides of this light-emitting diode, respectively this of this light-guiding shade first light export mouth and this second light export mouth are the side of corresponding ground to this two light guide plate, and respectively the light of this light-emitting diode penetrates to this two light guide plate via this first light export mouth and this second light export mouth this light-guiding shade in order to guide respectively.

10. light source module according to claim 9 is characterized in that, respectively this light-guiding shade comprises:

One first arc light-guiding shade, one end system forms this first light export mouth with this circuit board; And

One second arc light-guiding shade, one end system is connected with the other end of this first arc light-guiding shade, and the other end system of this second arc light-guiding shade forms this second light export mouth with this circuit board.

11. light source module according to claim 9 is characterized in that, the size of this first light export mouth is an equal and opposite in direction about and this second light export mouth.

12. light source module according to claim 11, it is characterized in that the intersection of this first arc light-guiding shade and this second arc light-guiding shade and the size of the formed opening of this circuit board system are less than the size of this first light export mouth and this second light export mouth.

13. light source module according to claim 9 is characterized in that, the material of this light-guiding shade is an aluminium.

14. light source module according to claim 13 is characterized in that, coating one protective layer on the inwall of this light-guiding shade.

15. light source module according to claim 9 is characterized in that, is sputter one reflector on the inwall of this light-guiding shade.

16. light source module according to claim 9 is characterized in that, the structure that this light-guiding shade is formed in one.

Images