Luminaire shield

• US 4,460,945 A
• Filed: 09/30/1982
• Issued: 07/17/1984
• Est. Priority Date: 09/30/1982
• Status: Expired due to Fees

• Current Assignee: Southern California Edison Company (Edison International)
• Original Assignee: Southern California Edison Company (Edison International)
• Inventors: Wheeler, Phillip L., Chandler, Lloyd H., Chan, Alexius C.
• Primary Examiner(s): Lechert, Jr., Stephen J.
• Application Number:
  US06/431,811
• Time in Patent Office: 656 Days
• Field of Search: 362/268, 362/255, 362/294, 362/307, 362/308, 362/310, 362/311, 362/355, 362/373, 362/376, 362/457
• US Class Current: 362/294
• CPC Class Codes: F21V 15/00 Protecting lighting devices from damage protection from thermal damage F21V29/00; gas-tight or water-tight arrangements F21V31/00

Abstract

A luminaire shield, particularly for protecting street lights from breakage by vandals includes a laminate plate mounted in spaced relationship from the lens of the luminaire. Heat can thereby escape between an air gap and between the light source housing and the shield, and the shield extends beyond the lens with a tail portion covering the electrical converter (ballast) mounted within the luminaire housing, such that this is also protected.

Claims

1. A luminaire comprising a housing for a light source, said light source including an electric converter element, a lamp socket for receiving a lamp, a light diffusing lens mounted in an aperture in the housing, and a transparent laminate shield mounted on the bottom of the housing remote from the light source, and with the lens between the light source and shield, the shield being spaced from the lens about at least part of the shield perimeter to form a vent between said part of the perimeter and the lens whereby heat generated by the light source is permitted to escape through said vent, said shield having a planar surface substantially parallel to the light diffusing lens, and extending to protect the electric converter element, said shield being of a thickness sufficient to protect the lens and converter element against a firearm projectile.

2. A luminaire as claimed in claim 1 wherein the shield is spaced from the lens by means of washer type elements.

3. A luminaire comprising a housing for a light source, said light source including an electric converter element, a lamp socket for receiving a lamp, a light diffusing lens mounted in an aperture in the housing, and a transparent laminate shield mounted on the bottom of the housing remote from the light source, and with the lens between the light source and shield, the shield being spaced from the lens about at least part of the shield perimeter to form a vent between said part of the perimeter and the lens whereby heat generated by the light source is permitted to escape through said vent, said shield being of a thickness sufficient to protect the lens and converter element against a firearm projecticle.