Portable lighting instrument having a light emitting diode assembly
US6174070A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 1, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Mar 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B10/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A portable lighting instrument having a light emitting diode assembly capable of being applied to a lighting system for a helicopter taking off and landing place. The system is constituted by a lighting instrument including a heliport lighthouse installed in a fixed position temporarily determined as a temporary taking off and landing place for a helicopter, a wind lamp, a landing area lighting lamp, a boundary guide lamp, and a boundary lamp. For at least the boundary guide lamp and the boundary lamp out of these lighting instruments, the portable lighting instrument according to the present invention can be used. The lighting instrument comprises a casing; a solar cell disposed on the outer surface of the casing; an electrical double-layer capacitor placed in the casing and charged by the solar cell; and a light emitting diode assembly disposed on the top of the casing and lighted by a current supplied from the electrical double-layer capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.