Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1998-05-15
2000-10-17
Day, Michael H.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313 17, 313579, 313624, 313634, 313569, 313573, H01J 102, H01J 6152, H01J 724, H01K 158
Patent
active
061336769
ABSTRACT:
A halogen bulb is composed essentially of a tubular halogen bulb having two conductive ends, a thick hollow glass envelope and a socket for holding securely the tubular halogen bulb in the thick hollow glass envelope. The thick glass envelope has a thickness ranging between about 2 mm and about 8 mm, which is made integrally or made of two component parts joined together. The thick hollow glass envelope may be provided with protuberances perpendicular to an outer surface opposite to the socket, and/or ventilation holes to reduce the temperature of the double-enveloped halogen bulb at work. The socket may be provided with one or more ventilation holes at the closed end thereof. A bracket is used inside the thick hollow glass envelope for holding the tubular halogen bulb such that the tubular halogen bulb is perpendicular to the longitudinal axis of socket. The present invention also discloses an inverted-U-shaped lead soldered to one of the two conductive ends, which is able to support the tubular halogen bulb such that the tubular halogen bulb is parallel to the longitudinal axis of socket.
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Day Michael H.
Santiago Mariceli
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