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Backlight unit

A backlight and light source technology, applied in the direction of optical components, optics, light sources, etc., can solve the problems of backlight component size deviation and low assembly accuracy

Active Publication Date: 2014-02-19
NICHIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the fitting position of any of the above-mentioned combinations, it is necessary to use the buckle unit for fitting and the transverse width of the T-shaped groove portion to be somewhat larger than the transverse width of the protrusion unit and the T-shaped hook. The more operability can be improved, but the assembly accuracy will be lower, and there may be deviations in the dimensions of the outermost shape of the backlight unit

Method used

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Examples

Experimental program
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Embodiment Construction

[0014] Embodiments of the backlight unit of the present invention will be described in detail below.

[0015] Figure 1 ~ Figure 4 shows this embodiment. figure 1 is a schematic perspective view viewed from the planar side of the backlight unit 100 of this embodiment, figure 2 It is a schematic cross-sectional view cut along the A-A line of 1 in the figure, image 3 and Figure 4 It is a schematic side view in the longitudinal direction of the backlight unit 100 of this embodiment.

[0016] The backlight unit 100 of this embodiment is mainly composed of a light source 5, a light guide plate 6 for guiding light from the light source 5, a lower frame 1 having an opening for accommodating the light source 5 and the light guide plate 6, and a frame fitted on the lower frame 1. Upper frame 8 constitutes. The planar external dimensions of the upper frame 8 are set to be larger than the planar external dimensions of the lower frame 1 . Also, the side surface 81 of the upper fr...

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PUM

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Abstract

PROBLEMS TO BE SOLVED: Provided is a backlight unit capable of maintaining its outermost size of the plane even when a horizontal misalignment occurs in the fixation of the upper frame and the lower frame during assembling or transportation. SOLUTION: A backlight unit includes a lower frame defining an opening portion in its upper portion, a light source arranged in the opening portion, a light guide plate arranged in the opening portion for guiding light from the light source, and an upper frame arranged at the opening portion side of the opening portion and having a window portion capable of transmitting light from the light guide plate. The lower frame and the upper frame are engagingly fixed at an engaging portion having a projecting portion integrally arranged on a side surface of one side surface and a rib portion defining a hole portion extending from an another side surface to the one side surface and to which the projecting portion can be engaged with. When viewed from a side, a lower portion of the side surface of the upper frame and an upper portion of the side surface of the lower frame are in contact with each other and the width of the hole portion is larger than the width of the projecting portion. When one side end portion of the projecting portion is made in contact with one side end portion of the hole portion, the side surface of the upper frame is located approximately on the same plane with the other side end portion of the side surface of the lower frame, and the other side end portion of the upper frame is located outer side than the other side end portion of the side surface of the lower frame.

Description

technical field [0001] The present invention relates to a backlight unit (backlight unit), and in particular to a structure of a pair of frames having a fitting structure. Background technique [0002] Generally, a backlight unit accommodates a light source, a light guide plate for guiding light from the light source so that the light becomes planar, and the like between the lower frame and the upper frame, and the upper frame and the lower frame are fitted together. As the fitting portion, for example, Patent Document 1 discloses a combination of a buckle unit integrally formed on a part of the side surface of the upper frame and a protrusion unit correspondingly formed integrally on a part of the side surface of the lower frame. A combination of a T-shaped hook on a part of the side surface of the upper frame and a groove formed on a part of the side surface of the lower frame (for example, refer to Japanese Patent Application Laid-Open No. 2006-285161). [0003] However,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S2/00F21Y101/02
CPCG02F2201/503G02F1/133308G02F2201/465G02F1/133615G02F2001/133322G02B6/0081G02F1/133322G02F1/1333G02F1/1335
Inventor 若木亮辅
Owner NICHIA CORP