发明申请
- 专利标题: LIGHTING DEVICE
- 专利标题(中): 照明设备
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申请号: US13211503申请日: 2011-08-17
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公开(公告)号: US20130044471A1公开(公告)日: 2013-02-21
- 发明人: Tien-Pao Chen
- 申请人: Tien-Pao Chen
- 主分类号: F21S4/00
- IPC分类号: F21S4/00 ; F21V21/00
摘要:
A lighting device includes a tubular body and a substrate. The tubular body has a chamber, a first end and a second end. The first and second ends communicate with the chamber. The substrate is axially disposed in the chamber. Multiple light-emitting elements are arranged on the substrate. By means of the substrate, the projection range and projection angle of the lighting device are enlarged to enhance luminous efficiency of the lighting device.
公开/授权文献
- US08434903B2 Lighting device 公开/授权日:2013-05-07