Lamp

• US 7,160,012 B2
• Filed: 01/03/2003
• Issued: 01/09/2007
• Est. Priority Date: 01/07/2002
• Status: Expired due to Fees

• Current Assignee: OSRAM GmbH (Ams-Osram AG)
• Original Assignee: Patent-Treuhand-Gesellschaft Fur Elektrische Gluhlampen mbH (Ams-Osram AG)
• Inventors: Hilscher, Achim, Noll, Thomas, Hofmann, Harald, Zachau, Martin
• Primary Examiner(s): Tso; Laura K.
• Application Number:
  US10/500,828
• Publication Number:
  US 20050105302A1
• Time in Patent Office: 1,467 Days
• Field of Search: 362/216, 362/217, 362/560, 362/580, 362/551, 362/555, 362/84, 362/260, 362/31, 362/600, 362/235, 362/613, 362/800
• US Class Current: 362/555
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/61 using light guides
• CPC Class Codes: F21K 9/66 Details of globes or covers forming part of the light source
• CPC Class Codes: F21V 3/04 characterised by materials, surface treatments or coatings
• CPC Class Codes: F21Y 2113/20 of different form
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 6/0033 Means for improving the coupling-out of light from the light guide
• CPC Class Codes: G02B 6/0073 Light emitting diode [LED]
• CPC Class Codes: H01J 61/327 "Compact"-lamps, i.e. lamps having a folded discharge path
• CPC Class Codes: H01J 61/38 Devices for influencing the colour or wavelength of the light
• CPC Class Codes: H05B 35/00 Electric light sources using a combination of different types of light generation

Abstract

A lamp (10) is disclosed with a single or double-sided socket, whereby a bulb element (11) is arranged on the at least one socket (12), which surrounds a volume of space (14) and said lamp is provided with at least one LED element (13). An irradiation of the LED light into the bulb element occurs and, as a result of reflection, in particular total reflection, on the defining surfaces (16,17) of the bulb element a transmission of the LED light within the bulb element occurs.

Claims

1. A lamp (10) having a base at one or both of its ends, a bulb element (11) which envelops a physical volume (14) being arranged on the at least one base (12), and the lamp having at least one associated LED element (13), characterized in that the LED light is irradiated into the bulb element, and, owing to reflection at limit faces (16, 17) of the bulb element, the LED light is passed on within the bulb element.

2. The lamp as claimed in claim 1, characterized in that a lamp element (31) of the second type is arranged within the physical volume (14) and supported by the at least one base.

3. The lamp as claimed in claim 2, characterized in that the lamp element (31) of the second type is in the form of a compact fluorescent lamp.

4. The lamp as claimed in claim 1, characterized in that a lamp element (31) of the second type is provided which has the same color temperature as the LED element (13) and is supported by the at least one base.

5. The lamp as claimed in claim 1, characterized in that the limit faces (16, 17) are curved and have largely no edges.

6. The lamp as claimed in claim 1, characterized in that the physical volume (14) is completely enclosed jointly by the bulb element (11) and the at least one base (12).

7. The lamp as claimed in claim 1, characterized in that at least one LED element (13) is arranged in the at least one base (12) of the lamp.

8. The lamp as claimed in claim 1, characterized in that the bulb element is connected to the at least one base via a fixing region (28), and the at least one LED element is arranged close to the fixing region.

9. The lamp as claimed in claim 1, characterized in that two or more LED elements (13) are provided which are arranged in the region of the edge of the at least one base.

10. The lamp as claimed in claim 1, characterized in that two or more LED elements (13) are provided which are arranged on the base such that they are distributed around the circumference of the base.

11. The lamp as claimed in claim 1, characterized in that two or more LED elements (13) are provided which comprise different colors.

12. The lamp as claimed in claim 1, characterized in that the limit faces comprise an inner limit face (16) which is adjacent to the physical volume (14) and an outer limit face (17) which is adjacent to the exterior, the inner and the outer limit faces being at least partially curved.

13. The lamp as claimed in claim 1, characterized in that the LED light is passed on within the bulb element (11) along the limit faces (16, l7).

14. The lamp as claimed in claim 12, characterized in that the bulb element (11) is essentially hollow, two separate structural elements forming the inner and the outer limit faces.

15. The lamp as claimed in claim 12, characterized in that at least one of the inner limit face and the outer limit face (16, 17) of the bulb element (11) is provided with a fluorescent layer (32), which is stimulated by the LED light.

16. The lamp as claimed in claim 1, characterized in that the lamp (10) has at least one base (12) having a conventional physical shape.

17. The lamp as claimed in claim 1, characterized in that the bulb element (11) is made of plastic.

18. The lamp as claimed in claim 17, characterized in that the bulb element is in the form of a plastic injection-molded part.

19. The lamp as claimed in claim 1, wherein the LED light is passed on within the bulb element along the limit faces largely owing to total reflection on the limit faces.

20. The lamp as claimed in claim 15, wherein the fluorescent layer is stimulated by components of the LED light which are in the short-wave UV range.