Title:
VEHICLE LAMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/077079
Kind Code:
A1
Abstract:
In conventional vehicle lamp devices, the structure of an incidence surface of a lens is complex, and the strongest light among light from a light source does not contribute to light distribution. This vehicle lamp device (1L) is provided with a lens (2), and a semiconductor-type light source (3). The lens (2) is configured from one incidence surface, and nine exit surfaces (21-29) partitioned by stepped partition surfaces (2L, 2R, 2U, 2D). When viewing the lens (2) from the front, the stepped partition surfaces (2L, 2R, 2U, 2D) of the nine exit surfaces (21-29) are provided in places excluding a place where the semiconductor-type light source (3) is positioned. As a result, in this vehicle lamp device (1L), the structure of the incidence surface of the lens (2) is simple, and the strongest light among light from the semiconductor-type light source (3) can be made to contribute to light distribution.
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Inventors:
IWASAKI KAZUNORI (JP)
Application Number:
PCT/JP2013/078120
Publication Date:
May 22, 2014
Filing Date:
October 17, 2013
Export Citation:
Assignee:
ICHIKOH INDUSTRIES LTD (JP)
International Classes:
F21S8/12; F21S8/10; F21V5/04; F21W101/10; F21Y101/02
Foreign References:
| JP2011175818A | 2011-09-08 | |||
| JP2011108412A | 2011-06-02 | |||
| JP2007294434A | 2007-11-08 | |||
| JP2006210294A | 2006-08-10 | |||
| JP2007265994A | 2007-10-11 |
Attorney, Agent or Firm:
SAKAMOTO TOMOHIRO (JP)
Tomohiro Sakamoto (JP)
Tomohiro Sakamoto (JP)
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