Title:
LIGHTING DEVICE AND IMAGE READING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/008944
Kind Code:
A1
Abstract:
The present invention comprises: a rod-form light conductor (2) that extends in the longitudinal direction, guides the light entering from an end surface, and emits linear light from a side surface; a light conductor holder (3) having a hole into which the end surface of the light conductor (2) is inserted and having an opening in a first flat surface on the side opposite the surface in which the end surface of the light conductor (2) is inserted, the opening optically communicating with the hole; a housing (4) for accommodating the light conductor (2) and the light conductor holder (3), and supporting the light conductor holder (3) so that the end surface of the light conductor (2) is exposed; a light source substrate (5) on which a light source element (5a) for emitting light to the end surface of the light conductor (2) is formed; and a substrate protective layer (6) having a second flat surface covering the light source substrate (5), the surface of the second flat surface being flat, and the substrate protective layer (6) being formed on the light source substrate (5) except at least in an area where the light source element is formed. At a position where the light emitted by the light source element (5a) enters the end surface of the light conductor (2) that is exposed from the opening, at least one of the light source substrate (5) and the second flat surface of the substrate protective layer (6) is pressed against the housing (4) or the first flat surface.
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Inventors:
ARAMAKI TORU (JP)
MATSUI HIDEKI (JP)
KOIKE HIROSHI (JP)
MATSUI HIDEKI (JP)
KOIKE HIROSHI (JP)
Application Number:
PCT/JP2019/025087
Publication Date:
January 09, 2020
Filing Date:
June 25, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H04N1/04; F21S2/00; F21V8/00; F21V17/00; F21V17/06; F21V19/00; G03B27/54; H04N1/028; F21Y115/10
Domestic Patent References:
| WO2009082011A1 | 2009-07-02 | |||
| WO2014061274A1 | 2014-04-24 |
Foreign References:
| JP2014063600A | 2014-04-10 | |||
| JP2012114284A | 2012-06-14 | |||
| JP2015154090A | 2015-08-24 | |||
| JP2015159446A | 2015-09-03 | |||
| JP2014063600A | 2014-04-10 | |||
| JP2018127949A | 2018-08-16 |
Other References:
See also references of EP 3820132A4
Attorney, Agent or Firm:
KIMURA Mitsuru (JP)
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