Title:
光源ユニット
Document Type and Number:
Japanese Patent JP6900639
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a light source unit capable of irradiating light uniformly over a wide range without setting a large light source arrangement area.SOLUTION: The light source unit comprises: a light source part in which many LED elements are arranged; and a light-transmissive protective cover provided so as to cover a light-source arrangement area in which the many LED elements are arranged, and having in a peripheral edge portion an optical element part that deflects light from the LED elements outwards. The light-transmissive protective cover comprises a frame part composed by forming, in a peripheral edge portion of one surface of a plate-like basal part, an inclination surface inclining in a direction in which an inner peripheral surface facing the light source arrangement area, functioning as an optical element part, approaches an LED element arrangement surface in a radially outward direction. The light-transmissive protective cover is preferably disposed while the optical axis of the LED element of at least a portion composing the light source part extends toward the inclination surface.SELECTED DRAWING: Figure 3
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Inventors:
Toshihiro Nakajima
Kazuhiko Shinoda
Kazuhiko Shinoda
Application Number:
JP2016152545A
Publication Date:
July 07, 2021
Filing Date:
August 03, 2016
Export Citation:
Assignee:
Ushio, Inc.
International Classes:
H01L33/58; F21S2/00; F21V3/00; F21V3/02; F21V5/00
Domestic Patent References:
| JP2008147453A | ||||
| JP2013045651A | ||||
| JP2013251081A |
Foreign References:
| US20150276166 |
Attorney, Agent or Firm:
Nobuo Fujimoto
Masuo Yamada
Shigenobu Keisuke
Masahiko Oi
Masuo Yamada
Shigenobu Keisuke
Masahiko Oi