Lighting device with remote wavelength converting element

Patent metadata

Field	Value
Publication number	US-9909724-B2
Application number	US-201514827817-A
Country	US
Kind code	B2
Filing date	Aug 17, 2015
Priority date	Aug 18, 2014
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

A lighting device ( 1 ) is provided comprising at least one light source ( 3 ), a wavelength converting element ( 8 ) adapted to convert a wavelength of light emitted by the at least one light source, at least one support ( 7 ) arranged to support the wavelength converting element remote from the at least one light source, and an envelope ( 2 ) adapted to enclose the wavelength converting element and at least a portion of the at least one support. The at least one support is arranged to be able to pivot relative to the wavelength converting element. The present lighting device enables using a rigid wavelength converting element and an at least partially rigid support, as these two components may be moved relative to each other for facilitating insertion of the unit in the envelope.

First claim

The invention claimed is:

1. A lighting device comprising:
at least one light source;
a wavelength converting element adapted to convert a wavelength of light emitted by the at least one light source,
at least one support arranged to support the wavelength converting element remote from the at least one light source; and
an envelope adapted to enclose the wavelength converting element and at least a portion of the at least one support,
wherein the at least one support is pivotable, about a pivot axis, between a first position and a second position relative to the wavelength converting element, a portion of the at least one support extends along the pivot axis through the wavelength converting element transverse to a longitudinal axis of the wavelength converting element, wherein the at least one support further comprises a hook-shaped end configured to grasp the wavelength converting element, and a support end, opposite the hooked end, extending in a direction crossing the pivot axis.

2. The lighting device as defined in claim 1 , further comprising a base adapted to be coupled to a light socket, wherein the envelope has an opening adapted to be coupled to the base.

3. The lighting device as defined in claim 2 , wherein the wavelength converting element has an elongated shape and is arranged to be able to pivot with respect to the at least one support in a plane extending along a longitudinal direction of the wavelength converting element,
wherein a length of the wavelength converting element as measured along said longitudinal direction is greater than a maximum width of the opening of the envelope, and
wherein a maximum width of the wavelength converting element as measured across said longitudinal direction is smaller than the maximum width of the opening of the envelope.

4. The lighting device as defined in claim 1 , wherein the at least one support comprises two supports, each one arranged to be able to pivot relative to the wavelength converting element.

5. The lighting device as defined in claim 4 , wherein each support is arranged to be able to pivot with respect to the wavelength converting element in a plane, and wherein the planes extends along each other.

6. The lighting device as defined in claim 1 , wherein the at least one light source is adapted to emit ultraviolet light.

7. The lighting device as defined in claim 1 , wherein the at least one light source is adapted to emit light at least in a first wavelength range,
wherein the wavelength converting element is adapted to convert light emitted by the at least one light source into at least a second wavelength range different from the first wavelength range, and
wherein the envelope is adapted to hinder at least a portion of the light emitted by the at least one light source in the first wavelength range to exit the lighting device.

8. The lighting device as defined in claim 7 , further comprising at least one additional light source adapted to emit light within the second wavelength range.

9. The lighting device as defined in claim 1 , wherein the wavelength converting element is adapted to convert light emitted by the at least one light source into at least one of the colors: white, yellow, amber and red.

10. The lighting device as defined in claim 1 , wherein the wavelength converting element comprises a light transmissive body and a wavelength converting material disposed at the light transmissive body.

11. The lighting device as defined in claim 1 , wherein the envelope is made in a single piece of material.

12. The lighting device as defined in claim 1 , wherein the envelope is clear transparent.

13. The lighting device as defined in claim 1 , wherein the at least one support comprises at least one bar.

14. The lighting device as define in claim 10 , wherein the wavelength converting material is arranged about the light transmissive body in the shape of a helix.

Assignees

• Philips Lighting Holding Bv

Inventors

• Marinus Antonius Adrianus Maria
• Gielen Vincent Stefan David
• Wagemans Wiebe

Classifications

• F21V9/06

  for filtering out ultraviolet radiation · CPC title

• F21V9/45

  by adjustment of photoluminescent elements · CPC title

• F21V9/32

  characterised by the arrangement of the photoluminescent material · CPC title

• F21V13/08

  the elements being filters or photoluminescent elements and reflectors · CPC title

• F21V17/02

  with provision for adjustment (F21V17/04 - F21V17/08 take precedence) · CPC title