Light fixture including an improved latch mechanism

• US 6,805,470 B1
• Filed: 05/15/2003
• Issued: 10/19/2004
• Est. Priority Date: 05/15/2003
• Status: Active Grant

• Current Assignee: GTG Intangible Holdings, LLP (Koninklijke Philips N.V.)
• Original Assignee: Ardee Lighting/Usa Incorporated
• Inventors: Ward, Lee
• Primary Examiner(s): Cariaso, Alan
• Assistant Examiner(s): Tsidulko, Mark
• Application Number:
  US10/438,028
• Time in Patent Office: 523 Days
• Field of Search: 362/374, 362/375, 362/370, 362/455, 362/223, 362/224
• US Class Current: 362/374
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 17/18 Latch-type fastening, e.g. with rotary action
• CPC Class Codes: F21V 19/0085 at least one conductive element acting as a support means, e.g. resilient contact blades, piston-like contact
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• CPC Class Codes: F21V 31/00 Gas-tight or water-tight arrangements
• CPC Class Codes: F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes

Abstract

A light fixture that includes a lens, a latch member, and a housing is provided. The light fixture includes an open top and a pair of generally parallel walls extending adjacent to the open top. The lens includes a pair of generally parallel side edges that include a leg on the lower portion of the side edge and a rib on the upper portion of the side edge above the leg. The latch member has a general L-shape, and includes legs for attaching and detaching the lens to the housing. The housing includes longitudinal grooves for receiving the latch member and lens. When the latch member is in the closed position, one leg of the latch member overlies the lens and a rib member on the lens is received by a recess in the latch member.

Claims

1. A light fixture comprising:

a housing having an open top and a pair of generally parallel wall portions extending adjacent to said open top;

an elongated lens having a pair of generally parallel side edges, each of the side edges including a depending leg, said lens further comprising rib members on the upper surfaces of said lens above said legs; and

a generally L-shaped latch member having first and second angularly related legs, the first leg having a free end including a generally cylindrical pivot rib member formed thereon, and a recess formed on the inner surface of said latch member at the juncture of said legs,

wherein said housing further comprises a first longitudinal groove formed thereon for receiving said pivot rib member, whereby in the closed position of the latch member the second leg of said latch member overlies said lens and the rib member on said lens is received by the recess of said latch member.

2. The light fixture according to claim 1, wherein said housing member further comprises a second longitudinal groove formed thereon for receiving the depending leg of said lens.

3. The light fixture according to claim 2, wherein a sealing member is capable of being disposed in the second longitudinal groove.

4. The light fixture according to claim 2, wherein the first longitudinal groove and the second longitudinal groove extend the entire length of said housing.

5. The light fixture according to claim 1, wherein said latch member extends the entire length of said housing.

6. The light fixture according to claim 5, wherein said light fixture includes no more than two of said latch members.

7. The light fixture according to claim 1, wherein the second leg of said latch member further comprises a raised end.

8. The light fixture according to claim 1, wherein, when said latch member is in the open position, the first leg of said latch member is configured to rotate in the first longitudinal groove of said housing without the first leg becoming dislodged from the first longitudinal groove.

9. A light fixture comprising:

a housing having an open top and a pair of generally parallel wall portions extending adjacent to said open top;

an elongated lens having a pair of generally parallel side edges, each of the side edges including a depending leg, said lens further comprising rib members on the upper surfaces of said lens above said legs; and

a generally L-shaped latch member having first and second angularly related legs, the first leg having a free end including a generally cylindrical pivot rib member formed thereon, and a recess formed on the inner surface of said latch member at the juncture of said legs,

wherein said housing further comprises a first longitudinal groove formed thereon for receiving said pivot rib member, whereby in the closed position of the latch member the second leg of said latch member overlies said lens and the rib member on said lens is received by the recess of said latch member and

wherein said housing member further comprises a second longitudinal groove formed thereon for receiving the depending leg of said lens.

10. A light fixture comprising:

a housing having an open top and a pair of generally parallel wall portions extending adjacent to said open top;

an elongated lens having a pair of generally parallel side edges, each of the side edges including a depending leg, said lens further comprising rib members on the upper surfaces of said lens above said legs; and

a generally L-shaped latch member having first and second angularly related legs, the first leg having a free end including a generally cylindrical pivot rib member formed thereon, and a recess formed on the inner surface of said latch member at the juncture of said legs,

wherein said housing further comprises a first longitudinal groove formed thereon for receiving said pivot rib member, whereby in the closed position of the latch member the second leg of said latch member overlies said lens and the rib member on said lens is received by the recess of said latch member,

wherein said housing member further comprises a second longitudinal groove formed thereon for receiving the depending leg of said lens, and

wherein a sealing member is capable of being disposed in the second longitudinal groove.