Title:
ILLUMINATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/149256
Kind Code:
A1
Abstract:
This illuminating device includes a housing, a plurality of light emitting devices, and a light diffusing panel. The housing includes: a bottom surface; a first side surface and a second side surface arranged in a first direction; a third side surface which is joined to the first side surface and which is arranged in a second direction; and a fourth side surface which faces the third side surface across the bottom surface. The intensity of light emitted in a direction substantially parallel to the first direction of the light emission arrangement, and in the opposite direction to said direction, is higher than the intensity of light emitted in another direction intersecting said directions. Each of one or more light emitting devices arranged between the first side surface and the second side surface is arranged in such a way as to satisfy either formula (1): L≥H/tan(90°-α) or formula (2): L≤(W/2)*tan(90°-θ).
Inventors:
SHINOHARA HIROYUKI
Application Number:
PCT/JP2020/000864
Publication Date:
July 23, 2020
Filing Date:
January 14, 2020
Export Citation:
Assignee:
ENPLAS CORP (JP)
International Classes:
F21S2/00; F21V3/00; F21V5/00; F21V5/04; F21V13/12; F21V15/01; F21V23/00; G02B5/02; G09F13/04; F21Y115/10
Foreign References:
| JP2010239021A | 2010-10-21 | |||
| JP2005515481A | 2005-05-26 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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