TWI498510B - Light guide plate lighting device - Google Patents

Description

Light guide plate lighting device

The invention relates to a light guide plate illumination device, in particular to a combination of a first light guide module, a reflective bottom plate and a reflective edge plate when the light emitting unit emits a light source, thereby effectively controlling the direction of the light emitted by the light source. In order to achieve the effect of the forward source and the better uniformity of the outgoing light source.

According to the light guide plate as the medium for light source propagation, it has the advantages of reducing cost and size. Generally, the main purpose is to improve brightness, uniformity of illumination and luminous efficiency; however, the light guide plate is most commonly used in backlight modules at this stage, and secondly It is lighting, and the most common design is to convert the line source into a surface light source with a light guide plate. It is widely used in computer screens, mobile phones, lighting, etc., and is an indispensable medium for light source transmission.

At present, most of the design and research of light guide plates at home and abroad still focus on the design of the light guide plate of the backlight module of the display. It is not specially designed for the angle of the exit light, but with the light guide microstructure of the dot to improve the brightness or uniformity. Designed for the target, and finally added the diffuser and the cymbal to improve the brightness of the positive viewing angle and adjust the direction of the exiting light angle; although the cymbal can successfully increase the luminance to control most of the outgoing light to ±35 Within the range of viewing angles, but because many of the key technologies are in the hands of specific companies, resulting in increased cost of backlight modules, many studies have focused on reducing the high-performance light guides of optical films, such as light-scattering polymers ( HSOT) is a light guide plate material, and is designed with a light guide plate that can highly control the directness and scattering of light. Although this method can avoid the use of the optical film, the material is special and the light angle is not easy to design; and in order to achieve the same effect, the related art combines the functions of the light guide plate, the reflection sheet and the brightness enhancement film of the conventional backlight module. The composite light guide plate is made up of two kinds of the same material, and the triangular structure of the reflective film is used to adjust the angle and brightness of the glossy surface, but it is directly injection molded with polymethylmethacrylate (PMMA). Different ways, not only the processing difficulty is increased, but also the plating film on the light guiding structure also contains the problem of energy loss.

In view of this, the inventors of this case have intensively discussed the above-mentioned problems of conventional inventions, and actively pursued solutions through years of experience in R&D and manufacturing of related industries. After long-term efforts in research and development, they have finally succeeded in developing this book. Invented the "light guide panel lighting device" to improve the problems of the conventional use.

The main purpose of the present invention is to effectively control the direction of the light emitted by the light source when the light emitting unit emits the light source, by using the cooperation of the first and second light guiding modules, the reflective bottom plate and the reflecting edge plate, so that the outgoing light source reaches Positive and better uniformity.

In order to achieve the above, the present invention is a light guide panel illumination device, comprising: a light-transmitting body having first and second light guide modules respectively disposed on two sides; at least one disposed on one side of the light-transmitting body a light-emitting unit; a reflective bottom plate disposed on one side of each of the second light-guiding modules; a plurality of reflective side plates respectively disposed on other sides of the light-transmitting body; and a plurality of light-emitting units and one side of each of the reflective side plates Package board.

In an embodiment of the invention, the light transmissive system may be a material of polymethyl methacrylate, glass, a transparent plasticized material or a transparent resin.

In an embodiment of the invention, the first light guiding module comprises a plurality of continuously arranged V-shaped light guides.

In an embodiment of the invention, the apex angle of each of the V-shaped light guides is between 50° and 55°±20%.

In an embodiment of the invention, the light exit angle of each of the V-shaped light guides is between 10° and 45°.

In an embodiment of the invention, each of the second light guiding modules respectively includes at least three V-shaped light guides arranged in series.

In an embodiment of the invention, the bottom angles of the V-shaped light guides are between 45° and 55 degrees. Between ±20%.

In an embodiment of the invention, the density of each of the V-shaped light guides is between 0.6 and 0.95.

In an embodiment of the invention, the light emitting unit may be a light emitting diode (LED).

1‧‧‧Lighting body

11‧‧‧First light guide module

111‧‧‧V-type light guide

12‧‧‧Second light guide module

121‧‧‧V-type light guide

2‧‧‧Lighting unit

3‧‧‧Reflecting base plate

4‧‧‧reflecting edge board

5‧‧‧Package board

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a perspective exploded view of the present invention.

Fig. 3 is a partially enlarged schematic view showing a portion A of Fig. 1 of the present invention.

Please refer to the "1st, 2nd, and 3rd drawings" for a perspective view of the present invention, a perspective exploded view of the present invention, and a partially enlarged schematic view of a portion A of the first embodiment of the present invention. As shown in the figure: the present invention is a light guide panel illumination device, which is at least The invention comprises a light-transmitting body 1, at least one light-emitting unit 2, a reflective bottom plate 3, a plurality of reflective side plates 4 and a plurality of package plates 5.

The light-transmitting body 1 mentioned above may be made of polymethyl methacrylate, glass, transparent plasticized material or transparent resin, and the first light guiding module 11 is disposed on one side thereof, and the light transmitting body 1 is A plurality of second light guiding modules 12 are disposed on the other surface, and the first light guiding module 11 includes a plurality of V-shaped light guiding bodies 111 arranged in series, wherein each of the first light guiding modules 11 is provided with a V-shaped body. The apex angle of the light guide body 111 is between 50° and 55 degrees. Between ±20%, and the light-emitting angles of the V-shaped light guides 111 of the first light guiding module 11 are between 10° and 45°, and each of the second light guiding modules 12 respectively includes At least three consecutively arranged V-shaped light guides 121, and the bottom angles of the V-shaped light guides 121 provided in each of the second light guiding modules 12 are between 45° and 55°±20%, The density of each of the V-shaped light guides 121 provided in each of the second light guiding modules 12 is between 0.6 and 0.95.

The light emitting unit 2 is disposed on one side of the light transmitting body 1 , and the light emitting unit 2 is a light emitting diode (LED).

The reflective bottom plate 3 is disposed on one surface of each of the second light guiding modules 12 .

Each of the reflecting side plates 4 is provided on each of the other side faces of the light transmitting body 1.

Each of the package boards 5 is provided on one surface of the light-emitting unit 2 and each of the reflection side plates 3, respectively.

When the present invention is applied, it can be installed on a ceiling or a wall as an indoor (or outdoor) lighting device, and when the light emitting unit 2 emits a desired light source, the first and second light guiding modules 11 can be utilized. 12, the reflection of the bottom plate 3 and the reflection of the side plate 4, so that the light source is emitted by the first light guiding module 11 at an angle of light between 10 ° and 45 °, thereby effectively controlling the direction of the light emitted by the light source, so that The outgoing light source reaches Positive and better uniformity.

In summary, the light guide panel illumination device of the present invention can effectively improve various disadvantages of the conventional use, and can effectively control the light source when the light source unit emits a light source by using the cooperation of the first and second light guiding modules, the reflective bottom plate and the reflective edge plate. The direction of the light is emitted to achieve the effect of the forward source and the better uniformity of the outgoing light source; thereby making the invention more progressive, more practical, and more in line with the needs of the consumer, and indeed conforms to the invention patent application. Essentials, 提出 file a patent application in accordance with the law.

However, the above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto; therefore, the simple equivalent changes and modifications made in accordance with the scope of the present invention and the contents of the invention are modified. All should remain within the scope of the invention patent.

1‧‧‧Lighting body

11‧‧‧First light guide module

111‧‧‧V-type light guide

12‧‧‧Second light guide module

121‧‧‧V-type light guide

2‧‧‧Lighting unit

3‧‧‧Reflecting base plate

4‧‧‧reflecting edge board

5‧‧‧Package board

Claims (6)

A light guide panel illumination device includes: a light-transmitting body having a first light guide module disposed on one side thereof, and a plurality of second light guide modules disposed on the other surface of the light-transmitting body A light guiding module comprises a plurality of continuously arranged V-shaped light guiding bodies, and each of the second light guiding modules comprises at least three consecutively arranged V-shaped light guiding bodies, and each of the second light guiding module bodies The density of each of the V-shaped light guides is between 0.6 and 0.95; at least one of the light-emitting units is disposed on one side of the light-transmitting body; and a reflective bottom plate is disposed on one of the second light-guiding modules. The plurality of reflective side plates are respectively disposed on the other sides of the light-transmitting body; and the plurality of package boards are respectively disposed on one surface of the light-emitting unit and each of the reflective side plates. The light guide plate illumination device according to claim 1, wherein the light transmission system is made of polymethyl methacrylate, glass, transparent plasticized material or transparent resin. According to the light guide plate illumination device of claim 1, wherein the V-shaped light guide body has an apex angle of between 50° and 55°±20%. According to the light guide plate illumination device of the first aspect of the patent application, the light exit angle of each V-shaped light guide body is between 10° and 45°. According to the light guide plate illumination device of claim 1, wherein the bottom angles of the V-shaped light guides are between 45° and 55°±20%. The light guide panel illumination device of claim 1, wherein the illumination unit is a light emitting diode (LED).