Work-light

• US 4,477,863 A
• Filed: 02/25/1983
• Issued: 10/16/1984
• Est. Priority Date: 02/25/1982
• Status: Expired due to Fees

• Current Assignee: Alfred Walz
• Original Assignee: Alfred Walz
• Inventors: Walz, Alfred
• Primary Examiner(s): Lechert, Jr., Stephen J.
• Application Number:
  US06/469,810
• Time in Patent Office: 599 Days
• Field of Search: 362/84, 362/217, 362/221, 362/222, 362/223, 362/225, 362/227, 362/249, 362/250, 362/265, 362/307, 362/310, 362/311, 362/362, 362/371, 362/375, 362/421, 362/427, 362/432
• US Class Current: 362/84
• CPC Class Codes: F21S 8/00 Lighting devices intended for fixed installation F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00
• CPC Class Codes: F21V 23/00 Arrangement of electric circuit elements in or on lighting devices characterised by cooling arrangements F21V29/508
• CPC Class Codes: F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes

Abstract

A work light comprising a housing, a gas discharge lamp of the fluorescent type positioned inside a portion of said housing, means defining a compartment which is an extension of said portion of said housing, and a smoothing choke and a rectifier including a voltage multiplier circuit mounted in the compartment. The compartment and the portion of the housing are aligned with each other along the longitudinal axis of the housing. An electrical power supply cable is connected to the housing in series with an electric switch, and a swivel arm is mounted on the housing, the power supply cable extending through the swivel arm.

Claims

1. A work light comprising a housing, a gas discharge lamp positioned inside a portion of said housing, a power supply cable connected to said housing, means defining a compartment which is an extension of said portion of said housing, and a smoothing choke and a rectifier including a voltage multiplier circuit mounted in said compartment.

2. A work light according to claim 1, wherein the rectifier is mounted on a circuit panel arranged between U-shaped flanges of a supporting plate.

3. A work light according to claim 1, wherein the internal walls of the housing are covered with a reflective metallic coating, especially in the region of the gas discharge lamp.

4. A work light according to claim 3, wherein the reflective coating is connected to a power supply plug a ground lead in the power supply cable.

5. A work light according to claim 1, wherein a U-shaped supporting member for the smoothing choke and rectifier is provided in said compartment, substantially parallel to the housing wall.

6. A work light according to claim 5, wherein the U-shaped supporting member is attached to the housing by deformed plastics rivets.

7. A work light according to claim 1, wherein the cover is connected to the U-shaped supporting member by lugs in one engaging in apertures in the other.

8. A work light according to claim 1, wherein the gas discharge lamp has a fluorescent layer emitting light corresponding to daylight, and a gas filling.

9. A work light according to claim 1, wherein two or four gas discharge lamps are arranged geometrically parallel in pairs in the housing.

10. A work light according to claim 1, wherein a lift-off device for the gas discharge lamp(s) is provided in the bottom of the housing in the region of a side wall of the cover.

11. A work light as defined in claim 1 comprising a swivel arm mounted on said housing.

12. A work light as defined in claim 1 comprising an electric switch connected in series with said power supply cable.

13. A work light as defined in claim 11, in which said swivel arm is mounted on said housing by means of a balljoint.

14. A work light as defined in claim 1 comprising a cover for said compartment.

15. A work light as defined in claim 11 in which said power supply cable extends through said swivel arm.

16. A work light as defined in claim 1 in which said compartment and said portion of said housing are aligned with each other along the longitudinal axis of said housing.