Shockproof fluorescent light fixture

• US 4,312,028 A
• Filed: 10/12/1979
• Issued: 01/19/1982
• Est. Priority Date: 10/18/1978
• Status: Expired due to Term

• Current Assignee: Martin Hamacher
• Original Assignee: Martin Hamacher
• Inventors: Hamacher, Martin
• Primary Examiner(s): Nelson, Peter A.
• Application Number:
  US06/084,194
• Time in Patent Office: 830 Days
• Field of Search: 362/217, 362/225, 362/306, 362/369, 362/390
• US Class Current: 362/369
• CPC Class Codes: F21V 15/04 Resilient mountings, e.g. shock absorbers shock absorbing devices of vehicle headlamp housings B60Q1/0491; in general F16F15/04
• CPC Class Codes: F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes

Abstract

A light fixture has a support formed with a recess having an inner wall. An at least partially transparent lens covers the recess. A fluorescent tube in this recess is surrounded by a transparent and elastomeric cushion sleeve that is in turn covered by a rigid and transparent jacket, both made of synthetic-resin material. Elastomeric holding blocks are engaged between the jacket and the inner wall of the recess so as to support the tube via the cushion sleeve and the jacket in the recess of the housing. Thus the tube is effectively protected against shocks of large and small amplitude over a wide frequency range.

Claims

1. A light fixture comprising:

a support formed with a recess having an inner wall;

an at least partially transparent lens covering said recess;

a fluorescent tube in said recess;

a transparent and elastomeric cushion sleeve surrounding said tube;

a rigid transparent jacket surrounding said cushion sleeve and spaced inwardly of said inner wall; and

at least one elastomeric holding block engaging inwardly against said jacket and outwardly against said inner wall and supporting said tube via said cushion sleeve and said jacket in said recess.

2. The fixture defined in claim 1 wherein said sleeve and jacket are of synthetic-resin material.

3. The fixture defined in claim 2 said jacket is glass-fiber reinforced.

4. The fixture defined in claim 3 wherein said cushion sleeve is made of soft synthetic-resin foam.

5. The fixture defined in claim 4 wherein said foam is a silicone foam.

6. The fixture defined in claim 3 wherein said sleeve is of substantially stiffer material than said blocks.

7. The fixture defined in claim 3 wherein two such blocks spaced along said jacket encircle said jacket and are braced against said inner wall.

8. The fixture defined in claim 1 wherein the space between said rigid jacket and said inner wall and lens is substantially empty except for said holding block.