# US 2014/0153261 A1 · Illumination device with carrier and envelope

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- Number: US 2014/0153261 A1
- Document ID: US20140153261A1
- Status: Published application
- Kind: A1
- Application number: 14/232,624
- Filed: 2012-07-09
- Published: 2014-06-05
- Earliest claimed: 2011-07-15
- Assignees: Koninklijke Philips N.V.
- Inventors: Antonius Adrianus Maria Marinus; Vincent Stefan David Stefan David Gielen; Peter Johannes Martinus Bukkems
- Web page: https://patentgrep.com/patent/US20140153261A1

## CPC

- F21V 29/506: of globes, bowls or cover glasses
- F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
- F21V 3/02: characterised by the shape
- F21V 3/04: characterised by materials, surface treatments or coatings
- F21K 9/61: using light guides
- F21V 29/86: {Ceramics or glass}
- F21Y 2115/10: Light-emitting diodes [LED]
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED

## Abstract

An illumination device comprising a light source (110). The illumination device comprises a thermally conducting carrier (130) arranged to support the light source. Furthermore, the illumination device comprises an envelope (120), wherein the carrier and the envelope together form a single compartment (140) at least partially enclosing the light source. The carrier is arranged to transfer heat (160) away from the light source to the envelope, and the envelope is arranged to dissipate heat (170) away from the illumination device. The carrier and the envelope of the illumination device may further form a single integrated part.

## Claims

### Claim 1

An illumination device comprising:
a light source arranged to generate light,
a thermally conducting carrier arranged to support said light source,
an envelope, wherein said carrier and said envelope form a single integrated part and together form a single compartment at least partially enclosing said light source, said carrier being arranged to transfer heat away from said light source to said envelope and said envelope being arranged to dissipate heat away from said illumination device.

### Claim 2

(canceled)

### Claim 3 (depends on 1)

The illumination device according to claim 1, wherein said light source is arranged to radiate light into a predefined region of space, said carrier being arranged in relation to said light source such that said carrier is arranged at least partially outside said region of space.

### Claim 4 (depends on 1)

The illumination device according to claim 1, wherein said carrier is arranged at a base portion of said envelope.

### Claim 5 (depends on 1)

The illumination device according to claim 1, wherein said carrier defines a through hole arranged to accommodate said light source.

### Claim 6 (depends on 1)

The illumination device according to claim 1, wherein said carrier and said envelope comprise ceramic material.

### Claim 7 (depends on 6)

The illumination device according to claim 6, wherein said ceramic material is translucent poly crystalline aluminium oxide.

### Claim 8 (depends on 1)

The illumination device according to claim 1, wherein said envelope comprises a transmissive region arranged to transmit at least part of the light generated by said light source.

### Claim 9 (depends on 1)

The illumination device according to claim 1, wherein said envelope comprises a reflective region arranged to reflect at least part of the light generated by said light source.

### Claim 10 (depends on 1)

The illumination device according to claim 1, wherein said envelope is bulb-shaped.

### Claim 11 (depends on 1)

The illumination device according to claim 1, further comprising a light guide arranged to guide the light from said light source.

### Claim 12 (depends on 11)

The illumination device according to claim 11, wherein said light guide projects into said compartment for thereby radiating light generated by said light source from a substantially central region in said compartment.

### Claim 13 (depends on 11)

The illumination device according to claim 11, wherein said light guide comprises an inner envelope, at least partially enclosing said light source.

### Claim 14 (depends on 13)

The illumination device according to claim 13, wherein said inner envelope is bulb-shaped, flexible, and comprises a phosphor coating.

### Claim 15 (depends on 1)

The illumination device according to claim 1, wherein said light source comprises at least one light emitting diode.