Double-enveloped lamp having a shield surrounding a light-source

Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

313113, 313573, 313580, 313635, H01J 6134, H01J 6135, H01J 6150, H01K 134

Patent

active

048885177

ABSTRACT:
A double-enveloped lamp having a shield surrounding a light-source capsule within a thick-walled outer envelope so that the lamp may be safely operated without necessity of a protective fixture. In the rare event of a burst of the light-source capsule, the shield absorbs and dissipates a portion of the burst energy sufficient to permit the thick-walled outer envelope to remain intact and contain shards and other internal parts within the lamp. In alternate embodiments, the shield may be reinforced, such as with a wire mesh, or the outer envelope may be reinforced, such as with a polymer coating, or both. A thin-walled capsule may be employed in combination with a shield and thick outer envelope. A lamp in accordance with the invention provides the unexpected benefits of improved luminous efficacy and better color rendering characteristics, since the presence of an optimally positioned shield causes the operation of the light-source capsule to be more nearly isothermal.

REFERENCES:
patent: 4342937 (1982-08-01), Nagel
patent: 4345178 (1982-08-01), Pappas
patent: 4459506 (1984-07-01), Beck
patent: 4490642 (1984-12-01), Dobrusskin et al.
patent: 4591752 (1986-05-01), Thouret et al.
patent: 4721876 (1988-01-01), White et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Double-enveloped lamp having a shield surrounding a light-source does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Double-enveloped lamp having a shield surrounding a light-source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double-enveloped lamp having a shield surrounding a light-source will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1904556

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.