Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1982-09-28
1985-07-02
Demeo, Palmer
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313573, H01J 6134, H01J 6174
Patent
active
045270830
ABSTRACT:
A discharge lamp provided with a U-shaped discharge tube and an outer envelope surrounding this tube. The bend of the discharge tube is supported with respect to the outer envelope by means of a metal member of sheet material. A few strips of this member engage the bend of the discharge tube. The metal member is composed of two parts twisted together which provide together a substantially light-tight transverse separation between the outer envelope and the discharge tube. The metal member maintains the bend of the operating lamp being kept at a relatively high temperature to improve luminous efficacy.
REFERENCES:
patent: 4129800 (1978-12-01), Van Benthem et al.
Op De Beeck Herbert K. M.
Peeters Joannes M. T.
Steeman Peter K. R. M.
Demeo Palmer
O'Shea Sandra L.
Smith Robert S.
U.S. Philips Corporation
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