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US 2002/0057570 A1Published application
Lighting system and lamp-reflector unit
AssigneeKoninklijke Philips Electronics N.V.
InventorPaulus Bartholomeus Johannes Schaareman
Life of this patent
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Abstract
The invention relates to a lighting system (1) comprising a lamp-reflector unit (2) in a housing (5), the housing (5) having air flow cooling means (7) and a ventilation opening (8). The lamp-reflector unit (2) is provided with a shield (9), for example a black coating, for avoiding light originating from the lamp-reflector unit (2) to emit from the housing (5) through its ventilation opening (8) during operation of the lamp (16). Thus a simple and relatively quiet cooling of the lighting system (1) is obtained.
Claims10
A lighting system (1) comprising:
- a lamp-reflector unit (2) comprising:
- a reflector body (3) with a reflecting portion (11) having an optical axis (12), with a light emission window (15) transverse to the optical axis (12), and with a concave inner reflecting surface (14) and an outer surface (4);
- an electric lamp (16) positioned in the reflecting portion (11);
- a housing (5) accommodating said lamp-reflector unit (2), and accommodating an aperture (6) for enabling light originating from the lamp-reflector unit (2) during operation of the lamp (16) to emit from the housing (5), and accommodating air flow cooling means (7) for cooling of the lamp-reflector unit (2) during operation of the lamp (16), the cooling means (7) comprising a ventilation opening (8) in the housing (5) for enabling cooling air to flow out of the housing (5);
- characterized in that the lamp-reflector unit (2) is provided with a shield (9) at a side of the reflecting surface (14) facing away from the light emission window (15) and in between the lamp (16) and the ventilation opening (8).
2 more elements
A lamp-reflector unit (2) comprising:
- a reflector body (3) with a reflecting portion (11) having an optical axis (12), with a light emission window (15) transverse to the optical axis (12), and with a concave inner reflecting surface (14) and an outer surface (4);
- an electric lamp (16) positioned in the reflecting portion (11);
- characterized in that the lamp-reflector unit (2) is provided with a shield (9) at a side of the reflecting surface (14) facing away from the light emission window (15).
Dependencies are inferred from the claim text.