Title:
PLANAR LIGHT UNIT
Document Type and Number:
Japanese Patent JP2018098017
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a planar light unit which can be assembled easily without transparent flexible resin shifting or falling from a light guide plate, when an LED, the transparent flexible resin and the light guide plate are stored in a case, even when the transparent flexible resin is interposed between the LED and an incident surface of the light guide plate for adhesion.SOLUTION: A planar light unit 1 is a side edge type in which a space between an LED 21 and an incident surface 11a of a light guide plate 10 is adhered by transparent flexible resin (elastomer 30). The light guide plate 10 includes: an emission surface 12a provided on one main surface; a reflection surface 12b opposing to the emission surface 12a; a recess 11 provided on one side end; and an incident surface 11a provided at a bottom of the recess 11. The elastomer 30 is fitted in the recess 11. In the recess 11, at least on one of incident side surfaces 11b, 11c for sandwiching the incident surface 11a, slip prevention parts 51, 52 having an uneven structure are provided.SELECTED DRAWING: Figure 2
Inventors:
WATANABE SEIICHI
SHO KATSUHIRO
KASHIWAGI NAOYA
WATANABE TAKASHI
SHO KATSUHIRO
KASHIWAGI NAOYA
WATANABE TAKASHI
Application Number:
JP2016240745A
Publication Date:
June 21, 2018
Filing Date:
December 12, 2016
Export Citation:
Assignee:
CITIZEN ELECTRONICS
CITIZEN WATCH CO LTD
CITIZEN WATCH CO LTD
International Classes:
F21S2/00; F21V15/04; G02B6/00; G02B6/42; G02F1/1333; G02F1/13357; H01L33/00
Domestic Patent References:
| JP2004138965A | 2004-05-13 | |||
| JP2011065872A | 2011-03-31 | |||
| JP2014120319A | 2014-06-30 | |||
| JP2016110903A | 2016-06-20 | |||
| JP2003168311A | 2003-06-13 | |||
| JP2008053013A | 2008-03-06 | |||
| JP2012165404A | 2012-08-30 |
Foreign References:
| US20100245109A1 | 2010-09-30 |
Attorney, Agent or Firm:
Yutaka Osawa
Gojong Hiroaki
Kei Osawa
Kazumiko Onuma
Gojong Hiroaki
Kei Osawa
Kazumiko Onuma