Title:
【発明の名称】車両用放電灯ヘッドランプ
Document Type and Number:
Japanese Patent JP2626155
Kind Code:
B2
Abstract:
An automotive lamp device includes a metal lamp housing having an opening for passing light therethrough, an electric-discharge lamp accommodated in the lamp housing to provide a required amount of light to be emitted by the lamp device, a lens having a series of modified prisms or ridges that bend the light beam generated by the discharge lamp into a desired pattern, a finisher disposed in an inner perimeter section other than a main lens section of the lens, for preventing propagation of the light beams through a section other than the main lens section of the lens. The finisher is made of metal and, in addition, electromagnetic shielding is employed in the lens for preventing undesirable electromagnetic radiation noise generated by the discharge lamp from leaking through the lens to the exterior of the lamp housing, while allowing the required amount of light to pass through the lens.
Inventors:
Toru Sego
Takashi Soda
Takashi Soda
Application Number:
JP10441690A
Publication Date:
July 02, 1997
Filing Date:
April 20, 1990
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
F21S8/10; F21S8/12; F21V5/00; F21V11/00; F21V11/16; F21V13/00; F21V25/00; (IPC1-7): F21M3/02; F21M3/05
Domestic Patent References:
| JP59111299A | ||||
| JP62172657A | ||||
| JP5248287A | ||||
| JP6135308U | ||||
| JP247705U | ||||
| JP63105202U | ||||
| JP61114701U | ||||
| JP4115037B1 | ||||
| JP3719266Y1 |
Attorney, Agent or Firm:
Fuyuki Nagai