Fluorescent hanging light fixture

• US 6,758,580 B1
• Filed: 03/04/2002
• Issued: 07/06/2004
• Est. Priority Date: 06/01/2001
• Status: Active Grant

• Current Assignee: Orion Energy Systems, Inc.
• Original Assignee: Orion Energy Systems, Inc.
• Inventors: Verfuerth, Neal R.
• Primary Examiner(s): Husar, Stephen F.
• Application Number:
  US10/086,820
• Time in Patent Office: 855 Days
• Field of Search: 362/221, 362/225, 362/241, 362/260
• US Class Current: 362/241
• CPC Class Codes: F21S 8/06 by suspension
• CPC Class Codes: F21V 23/026 Fastening of transformers or ballasts
• CPC Class Codes: F21V 7/0016 on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21V 7/06 with parabolic curvature
• CPC Class Codes: F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes
• CPC Class Codes: F21Y 2113/00 Combination of light sources

Abstract

Disclosure is made of a fluorescent elongated light fixture having a plurality of elongated light reflectors and each end of the light reflectors attached to socket mount/wire raceway arms attached to ends of ballast channel assembly and sockets for a plurality of fluorescent, elongated light tubes mounted on socket mount/wire raceway arms at each end of the longitudinal light reflectors on the concave side, and a plurality of fluorescent light tubes inserted into the fluorescent light tube sockets on the concave side of the light reflectors and one ballast in the ballast channel, and the reflectors having a cross section of a parabola and rim edges bent outward on each edge of the reflectors, and the rim edges of the reflectors overlapping the adjacent rim on assembly of the light fixture.

Claims

1. Fluorescent light fixture comprising:

a—

a plurality of elongated light reflectors and each end of said elongated light reflectors attached to socket mount/wire raceway arms and

b—

said socket mount/wire raceway arms attached to ends of ballast channel assembly,

c—

a single ballast mounted in said ballast channel assembly,

d—

fluorescent light tube sockets for a plurality of fluorescent light tubes mounted on said socket mount/wire raceway arms at each end of said elongated light reflectors in the concave side of said elongated light reflectors

e—

a plurality of said elongated fluorescent light tubes inserted into said fluorescent light tube sockets in the concave side of said elongated light reflectors and,

f—

rim edges on said elongated light reflectors over-lap on adjacent rim edges of said elongated light reflectors.

2. A fluorescent elongated tube light fixture, of claim 1, wherein further improvement consists of:

a—

said elongated light reflectors fitting over said elongated fluorescent light tubes for maximum light, reflection downward,

b—

said elongated fluorescent tube lights having a diameter D, then the radius R of the bend of the cross section of said elongated light reflectors is D×

0.875,

c—

an arc at said bend of said elongated light reflectors is equal to 120°

,

d—

the side of said elongated light reflectors are tangent to said radius at the ends of said arc,

e—

said elongated light reflectors sides extend outward to a dimension between sides said elongated light reflectors sides equal to 3.25×

the diameter of the said elongated fluorescent light tube and,

f—

the distance between said elongated fluorescent light tube and said arc of the bend of said light reflector is equal to 0.375×

diameter of said elongated fluorescent tube light and,

g—

distance from bottom of said elongated fluorescent light tube to span line between side edges of said elongated light reflector is equal to 0.5×

diameter of said elongated fluorescent light tube.

3. Elongated light reflectors, of claim 1, selected from the group consisting of polished sheet metal, metal coated plastic, and metal coated glass.

4. A method of focusing downlight of a fluorescent hanging light fixture consisting of:

a—

elongated light reflectors over each elongated fluorescent light tube,

b—

said elongated light reflector extending the length of said elongated fluorescent light tube,

c—

cross section of said elongated light reflector comprising an arc straddling said elongated fluorescent light tube and at a space of 0.375 times diameter of said elongated fluorescent light tube from said elongated fluorescent light tube,

d—

said arc of said elongated light reflector having a radius of 0.875 times the diameter of said elongated fluorescent light tube and said arc ranging from 120°

to 160° and

,

e—

sides of said elongated light reflector, tangent at each end of said arc range of said elongated light reflector

f—

a single ballast mounted in a ballast channel assembly and,

g—

a plurality of said elongated light reflectors and said elongated fluorescent light tubes mounted in said fluorescent light fixture.

5. A fluorescent elongated tube light fixture comprising:

a—

a plurality of elongated light reflectors and each end of said elongated light reflectors attached to socket mount/wire raceway arms,

b—

two of said socket mount/wire raceway arms attached, one on each end perpendicular to ends of ballast channel assembly,

c—

a single ballast mounted in said ballast channel assembly,

d—

light tube sockets, for a plurality of elongated fluorescent light tubes, mounted on said socket mount/wire raceway arms, at each end of said plurality of said elongated light reflectors in the concave side of said plurality of said elongated light reflectors,

e—

said plurality of said elongated fluorescent light tubes inserted into said light tube sockets, in the concave side of said elongated light reflectors,

f—

said elongated light reflectors, fitting over said elongated fluorescent light tubes, said elongated light tubes having a diameter of D, then the radius R, of the bend of the cross section of said elongated reflector is D×

0.875,

g—

said arc at said bend of said elongated light reflector is equal to 120° and

sides of said elongated reflectors are tangent to the radius at ends of said arc,

h—

said sides of said elongated light reflectors extend outward to a dimension between said elongated reflector sides equal to 3.25×

diameter of said elongated fluorescent light tube,

i—

the distance between said elongated fluorescent light tube, and said arc of said bend of said elongated light reflector is equal to 0.375×

diameter of said elongated fluorescent light tube and,

j—

distance from bottom of said elongated fluorescent light tube to span line between edges of said elongated light reflector is equal to 0.5×

diameter of said elongated fluorescent light tube.