Illumination – Self powered lamp – Dome – globe or wire guard or lamp bulb cover
Patent
1997-09-30
1999-12-21
Cariaso, Alan
Illumination
Self powered lamp
Dome, globe or wire guard or lamp bulb cover
362205, 362307, 362327, 362355, F21L 1502
Patent
active
060040033
ABSTRACT:
A portable lighting device according to the present invention includes a battery housing, a light source supported at a first end of the battery housing, and a shroud extending outward from the first end of the battery housing circumferentially around the light source. The shroud is preferably formed of a translucent material having a partially-reflective inner surface for reflecting a portion of incident light emitted from the light source in a forward direction while allowing a portion of the incident light to be transmitted through the shroud and dispersed in peripheral directions. The shroud further preferably includes a diffusing outer surface for diffusing the incident light that is transmitted through the shroud. A shroud is preferably integrally formed with a collar portion as used for threading the integrated head structure onto the battery housing. Additionally, a protective lens cover that may include a collimating lens is also integrally formed in this head structure. Thus, the portable lighting device of the present invention may be constructed with much fewer components and at a much lower cost than conventional flashlights.
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Dalton David R.
Lynch Peter F.
Cariaso Alan
Eveready Battery Company Inc.
Welsh Robert W.
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