Portable lighting device

Details Portable lighting device Portable lighting device

1981-02-17

1987-10-27

Nelson, Peter A.

Illumination

Light source and modifier

With ventilating, cooling or heat insulating means

362109, 362427, 362444, F21V 2900

Patent

active

047034041

ABSTRACT:
A portable electric lighting device is provided having an open top closable by two rotatable members oppositely hinged. The members allow easy access to the interior of the device for bulb, light filter or lens changing. Heat from the lamp is dissipated by including air vents in the members and constructing at least one member with heavy heat conductive material. The device includes a bulb ejector lever and resilient biasing wires to maintain the bulb in a secure position.

REFERENCES:
patent: 3126785 (1964-03-01), Zillmer
patent: 3140053 (1964-07-01), Lowell
patent: 3461282 (1969-08-01), Martinez
patent: 3541492 (1970-11-01), Fenn
patent: 3639751 (1972-02-01), Pichel
patent: 3689761 (1972-09-01), Rosen et al.
patent: 3936686 (1976-02-01), Moore

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