Lamp, in particular, lounge, table or pocket lamp

• US 6,893,143 B2
• Filed: 03/15/2001
• Issued: 05/17/2005
• Est. Priority Date: 07/03/2000
• Status: Expired due to Fees

• Current Assignee: Zweibruder Optoelectronics GmbH & Co. KG
• Original Assignee: Zweibruder Optoelectronics GmbH
• Inventors: Opolka, Harald
• Primary Examiner(s): Sember, Thomas M.
• Assistant Examiner(s): Truong, Bao Q
• Application Number:
  US10/258,390
• Publication Number:
  US 20030095408A1
• Time in Patent Office: 1,524 Days
• Field of Search: 362/241, 362/84, 362/800, 362/184, 362/240, 362/243, 362/245, 362/247, 362/116, 362/118, 362/297, 362/296, 362/301, 362/302, 362/341, 362/349, 362/346, 362/348, 362/205, 362/191, 362/208, 362/304, 362/347
• US Class Current: 362/241
• CPC Class Codes: F21L 4/027 the light sources being a LED
• CPC Class Codes: F21S 6/002 Table lamps, e.g. for ambient lighting
• CPC Class Codes: F21V 21/0885 for portable lighting devices
• CPC Class Codes: F21V 23/0414 specially adapted to be used with portable lighting devices
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

The invention relates to a lamp, in particular, a lounge, table, or pocket lamp with a lamp head (13), comprising a light source (16), arranged in a hollow reflector (17), which extends with the plug-in, or terminal contacts thereof, through an opening in the rear of the hollow reflector. According to the invention, the light source is a light diode (16). The opening in the hollow reflector (17), lies very close to the outline of the cover of said light diode, such that the light diode is centralised and longitudinally fixed in position, relative to said hollow reflector. The hollow reflector has a reflector piece, surrounding the light emitting chip of the light diode; which is at least essentially conical in shape.

Claims

1. A lamp comprising:

a lamp head;

a light source in said lamp head;

a hollow reflector in said lamp head and receiving said light source, said light source having contacts projecting rearwardly through a passage of the hollow reflector, the light source being a light-emitting diode, the passage in the hollow reflector being of the same size as a peripheral contour of the light-emitting diode within a slight play or tolerance, the position of the hollow reflector being singularly determined by an outer peripheral shape thereof and the configuration of a lamp head inner surface and being also centered and positioned along a longitudinal axis of the lamp head, the hollow reflector surrounding a light-emitting chip of the light-emitting diode in a ring with at least a substantially conically-shaped first reflector part, said conically-shaped first reflector part forming an angle of 10°

to 45°

with said axis, the hollow reflector having in a region of larger conical diameter, a second conically-shaped reflector part parallel to the first reflector part, and between the first and second parts a cylindrically-shaped shell part is, whereby the hollow reflector projects only limitedly beyond the front diode glass end and/or the light-emitting diode is arranged at least 0.5 cm behind the open end of the lamp head.

2. The lamp according to claim 1 wherein the hollow reflector is formed as a body which has a cylindrically-shaped stepped outer shell surface which is of the same diameter within a limited play or tolerance as a stepped cylindrically shaped lamp head inner surface, whereby the hollow reflector is secured against falling out by a ring-shaped step of the cylinder shell part against a correspondingly formed step in the lamp head inner surface.

3. The lamp according to claim 1 wherein a conically-shaped outer surface which sealingly engages annularly on an identically-shaped inner conical surface of the lamp head, within a limited play or tolerance.

4. The lamp according to claim 1 wherein the passage in the hollow reflector has at a bottom rear side thereof a ring-shaped enlargement for receiving a lower diode glass body base step.

5. The lamp according to claim 1 wherein, a plurality of light-emitting diodes are disposed in the lamp head, whereby each light-emitting diode has an individual reflector associated therewith within which the respective diode is centered and that the number of reflectors is arranged in a honeycomb shape and are integrated to a one-piece body with outer shells matched to the lamp head inner shell.

6. The lamp according to claim 5 wherein the one-piece body has a shell profile that is matched to the inner shell of the lamp head.

7. The lamp according to claim 5 wherein the individual reflectors are arranged one next to another along a line, an arc, a circle, or rotationally symmetrically about a central point.

8. The lamp according to claim 1 wherein said head is provided on a lamp body of bar-shape configuration adapted to be fitted into a ring-shaped or cylinder-shaped mounting of a lamp shade.

9. The lamp according to claim 1 wherein the light-emitting diode has a glass body is provided with a coating containing luminescent particles.

10. The lamp according to claim 9 wherein the light-emitting diode is a xenon diode.

11. The lamp according to claim 1 the lamp head has a front cover which is of the configuration of a collecting lens.

12. A lamp comprising:

a lamp head;

a light source in said lamp head;

a hollow reflector in said lamp head and receiving said light source, said light source having contacts projecting rearwardly through a passage of the hollow reflector, the light source being a light-emitting diode, the passage in the hollow reflector being of the same size as a peripheral contour of the light-emitting diode within a slight play or tolerance, the position of the hollow reflector being singularly determined by an outer peripheral shape thereof and the configuration of a lamp head inner surface and being also centered and positioned along a longitudinal axis of the lamp head, the hollow reflector surrounding a light-emitting chip of the light-emitting diode in a ring with at least a substantially conically-shaped first reflector part, the hollow reflector having on a bottom periphery thereof, detent means which engages the diode bottom from the rear.

13. The lamp according to claim 12 wherein at least one reflector is swingable about an angle up to 45°

.

14. A lamp comprising:

a lamp head;

a light source in said lamp head;

a hollow reflector in said lamp head and receiving said light source, said light source having contacts projecting rearwardly through a passage of the hollow reflector, the light source being a light-emitting diode, the passage in the hollow reflector being of the same size as a peripheral contour of the light-emitting diode within a slight play or tolerance, the position of the hollow reflector being singularly determined by an outer peripheral shape thereof and the configuration of a lamp head inner surface and being also centered and positioned along a longitudinal axis of the lamp head, the hollow reflector surrounding a light-emitting chip of the light-emitting diode in a ring with at least a substantially conically-shaped first reflector part,

said lamp having a lamp housing provided on a periphery thereof with a pressure or slide switch protected against unwanted actuation by covering it with a clip which is mounted on the lamp housing for rotation or sliding movement or releasably to uncover the switch or to hold down the switch.

15. A lamp comprising:

a substantially cylindrical lamp body forming a battery housing;

a lamp head receivable on an end of said body;

a light source comprising at least one light-emitting diode received in said lamp head, said light-emitting diode having a base, a light-emitting chip and an elongated body secured to said base and enclosing said chip; and

a reflector individual to said light-emitting diode and received in said head, said reflector having a generally cup-shaped internal surface surrounding an axis of said body and opening in a direction of a light emitting end of said head, said surface having a first conical part surrounding said light-emitting diode at said chip, a second conical part spaced from said first part along said axis toward said light-emitting end of said head, and a cylindrical part between the first and second conical parts.

16. A lamp comprising:

an elongated bar-shaped housing having an external surface;

a lamp head at an end of said housing containing at least one light source;

a switch on said housing having an actuator on said surface for controlling illumination of said source; and

a clip on said housing covering said actuator and displaceable relative to said housing in at least one operation selected from rotation, linear shifting and removal to uncover said actuator for operation thereof.