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Light guide assembly and illumination device using light guide assembly

A technology of light guide components and light guide plates, which is applied in the direction of lighting devices, light guides of lighting devices, components of lighting devices, etc. Hole shadow, even and comfortable light output

Active Publication Date: 2019-09-17
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device can solve the shadow problem to a certain extent, but it is limited by the relative positional relationship between the light source and the light guide assembly, which leads to an increase in the size of the light guide assembly and limits the multiple utilization methods of the light guide plate itself

Method used

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  • Light guide assembly and illumination device using light guide assembly
  • Light guide assembly and illumination device using light guide assembly
  • Light guide assembly and illumination device using light guide assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The first embodiment of the present invention provides a light guide assembly, figure 1 It is a three-dimensional schematic view of the light guide assembly according to the first embodiment of the present invention. see figure 1 As shown, the light guide assembly A includes a light guide plate 1 and an LED chip mounting portion 3 on which a plurality of LED chips 3a are installed, wherein the light guide plate 1 is made of a material with good light transmittance, and has a light incident surface 11 and a light exit surface 12 The light exit surface 12 includes a first light exit surface 12a and a second light exit surface 12b parallel to each other, wherein the first light exit surface 12a and the light entrance surface 11 are perpendicular to each other, and the second light exit surface 12b and the light entrance surface 11 are perpendicular to each other. The first light-emitting surface 12a includes a light-emitting area 12a1 and a light-mixing area 12a2, wherein...

Embodiment 2

[0049] A second embodiment of the present invention provides a light guide assembly. figure 2 It is a partial top view of the light guide assembly according to the second embodiment of the present invention, image 3 It is a schematic diagram of the partial structure of the light source of the light guide assembly according to the second embodiment of the present invention. The second embodiment is a further improvement on the first embodiment, the main improvement is that, in the second embodiment of the present invention, see Figure 2-Figure 3 as shown, figure 2 is true figure 1 Partial top view of the enlarged light guide assembly of the area of ​​the light guide plate where the middle opening 4 is located and the corresponding LED chip mounting part 3, as shown in figure 2 As shown, according to the position of the opening 4, a plurality of LED chips 3a are divided into a first LED chip group 31 arranged in an arrangement corresponding to the opening 4, and a group ...

Embodiment 3

[0054] A third embodiment of the present invention provides a light guide assembly. Figure 4 is true figure 1 An enlarged partial top view of the light guide assembly in the area of ​​the light guide plate where the central opening 4 is located and the corresponding LED chip mounting portion 3 . The third embodiment is a further improvement on the second embodiment. The main improvement is that, in the third embodiment of the present invention, the distance between the LED chip 3a in the first LED chip group 31 and the light guide plate is different. The distance between the LED chips 3 a in the second LED chip group 32 and the light guide plate.

[0055] Further, see Figure 4 As shown, the first LED chip group 31 is composed of a point light source corresponding to the diameter of the opening 4, and its distance to the opening 4 is greater than the distance from the second LED chip group 32 not arranged in an arrangement corresponding to the opening 4 to the opening 4 . ...

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PUM

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Abstract

The invention relates to the field of lamp illumination, and discloses a light guide assembly and an illumination device using the light guide assembly. The light guide assembly comprises a light guide plate, a plurality of LED chips and opening holes, wherein the light guide plate is provided with an incidence surface and an emergent surface, and the plurality of LED chips are arranged along the edge of the light guide plate, correspond to the incidence surface, and are arranged at a specified interval; the opening holes are arranged at the edge of the same side, corresponding to the plurality of LED chips, of the light guide plate and penetrate through the light guide plate, the emergent surface comprises a first emergent surface and a second emergent surface which are parallel to each other, the first emergent surface and the incidence surface are perpendicular to each other, and the second emergent surface and the incidence surface are perpendicular to each other; the first emergent surface comprises a light emitting region and a light mixing region, and the light emitting region of the first emergent surface is provided with optical points for reflecting light rays entering into the light guide plate through the LED chips to the first emergent surface and the second emergent surface partially; and the light mixing region is provided with a smooth surface and is arranged along the edge of the light guide plate, and the opening holes correspond to openings of the first emergent surface and are arranged in the light mixing region. According to the light guide assembly, shadow generated by the opening holes in the light guide plate can be effectively eliminated, so that emergent light is uniform and comfortable.

Description

technical field [0001] The invention relates to the field of lamp lighting, in particular to a light guide assembly and an illumination device using the light guide assembly. Background technique [0002] The role of the light guide plate is to convert the line light source originally composed of LED particle point light sources into a surface light source. It is an important component in backlight lamps. At present, the side-light light guide plate has gradually become the mainstream. Its biggest advantages are thin thickness and light weight. ,low cost. However, since the light enters the light guide plate from the edge of the side-illuminated light guide plate, shadows will be produced by the installation and fixing components of the lamps and other functional supporting devices, which affects the appearance and comfort of light emission. [0003] To solve this problem, Patent Document 1 CN201010003969.6 discloses a light guide plate, a backlight module and a method for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V8/00G02B6/00F21Y115/10
CPCG02B6/0011F21V2200/20F21Y2115/10
Inventor 陈辉立野洋司
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD