# US 2013/0155673 A1 · Led lighting apparatus with flexible light modules

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- Number: US 2013/0155673 A1
- Document ID: US20130155673A1
- Status: Published application
- Kind: A1
- Application number: 13/326,766
- Filed: 2011-12-15
- Published: 2013-06-20
- Earliest claimed: 2011-12-15
- Assignees: TSMC Solid State Lighting Ltd.
- Inventors: Jin-Hua Wang; Hsueh-Hung Fu; Pei-Wen Ko; Chih-Hsuan Sun
- Web page: https://patentgrep.com/patent/US20130155673A1

## CPC

- F21K 9/20: Light sources comprising attachment means
- F21K 9/60: Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21V 5/007: {Array of lenses or refractors for a cluster of light sources, e.g. for arrangement of multiple light sources in one plane (combination of two or more refractors F21V5/008)}
- F21V 17/02: with provision for adjustment (F21V17/04 - F21V17/08 take precedence)
- F21V 29/74: with fins or blades
- F21V 29/75: with fins or blades having different shapes, thicknesses or spacing
- F21V 29/763: {the planes containing the fins or blades having the direction of the light emitting axis}
- F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes
- F21V 13/04: the elements being reflectors and refractors {(for vehicle rear lights F21S43/40)}
- F21W 2131/103: of streets or roads
- F21Y 2113/00: Combination of light sources
- F21Y 2115/10: Light-emitting diodes [LED]
- Y02B 20/72: in street lighting
- 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
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- 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
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

The present disclosure involves a street light. The street light includes a base, a lamp post coupled to the base, and a lamp head coupled to the lamp post. The lamp head includes a housing and a plurality of LED light modules disposed within the housing. The LED light modules are separate and independent from each other. Each LED light module includes an array of LED that serve as light sources for the lamp. Each LED light module also includes a heat sink that is thermally coupled to the LED. The heat sink is operable to dissipate heat generated by the LED during operation. Each LED light module also includes a thermally conductive cover having a plurality of openings. Each LED is aligned with and disposed within a respective one of the openings.

## Claims

### Claim 1

A light module, comprising:
an array of light illuminating devices disposed on a substrate and collectively extending in a first direction, wherein each of the light illuminating devices in the array includes a semiconductor photonic device covered by a lens;
a metal cover having a plurality of openings, wherein each of the light illuminating devices is disposed within a respective one of the openings; and
a heat sink thermally coupled to the substrate;
wherein:
the heat sink includes a plurality of fins that each contain a respective recess; and
the recesses are approximately aligned and collectively form an airflow path that extends in the first direction.

### Claim 2 (depends on 1)

The light module of claim 1, wherein:
the substrate includes a thermally conductive pad;
the photonic device include a light-emitting diode (LED); and
the lens includes a secondary lens.

### Claim 3 (depends on 2)

The light module of claim 2, wherein the secondary lens is reconfigurable.

### Claim 4 (depends on 1)

The light module of claim 1, wherein the light module is waterproof, and wherein the light module includes:
a waterproof gasket disposed between the substrate and the heat sink; and
one or more waterproof connectors coupled to the metal cover.

### Claim 5

(canceled)

### Claim 6 (depends on 1)

The light module of claim 1, wherein the openings of the metal cover are configured as light reflectors for their respective semiconductor photonic devices.

### Claim 7

(canceled)

### Claim 8 (depends on 1)

The light module of claim 1, wherein each fin has a U-shape profile, and wherein each fin has a plurality of protruding branch members.

### Claim 9 (depends on 1)

The light module of claim 1, wherein a plurality of the light modules is operable to be installed within a housing for a cobra head light.

### Claim 10

A lighting instrument, comprising:
a street light housing; and
a plurality of lighting modules disposed within the street light housing, each lighting module being individually detachable from the street light housing, wherein each of the lighting modules includes:
a thermally conductive substrate;
a plurality of light-emitting diode (LED) devices located on the substrate;
a metal cover disposed over the substrate, wherein the metal cover includes a plurality of openings that are each aligned with a respective one of the LED devices; and
a thermal dissipation structure coupled to the substrate.

### Claim 11 (depends on 10)

The lighting instrument of claim 10, wherein the LED devices each include an LED covered by a reconfigurable secondary lens.

### Claim 12 (depends on 10)

The lighting instrument of claim 10, wherein each lighting module includes one or more waterproof components, and wherein the waterproof components include at least one of a waterproof connector and a waterproof gasket.

### Claim 13 (depends on 10)

The lighting instrument of claim 10, wherein each lighting module is secured to the street light housing through a screw-free mechanism.

### Claim 14 (depends on 10)

The lighting instrument of claim 10, wherein each opening of the metal cover is defined by reflective sidewalls surrounding the respective LED device.

### Claim 15 (depends on 10)

The lighting instrument of claim 10, wherein the thermal dissipation structure includes a board and a plurality of members protruding from the board, and wherein the members contain respective recesses that are substantially aligned with one another, the recesses collectively forming an airflow path that extends in a same direction in which the plurality of LED devices collectively extend.

### Claim 16 (depends on 15)

The lighting instrument of claim 15, wherein the members each include a plurality of branches that extend outwardly from the member.

### Claim 17

A street light, comprising:
a base;
a lamp post coupled to the base;
a lamp head coupled to the lamp post, wherein the lamp head includes:
a housing; and
a power module; and
a plurality of light modules disposed within, and each individually detachably coupled to, the housing, wherein each lighting module includes a plurality of light-emitting diodes (LEDs), a heat sink thermally coupled to the LEDs, and a thermally conductive cover having a plurality of openings each aligned with a respective one of the LEDs.

### Claim 18 (depends on 17)

The street light of claim 17, wherein:
each light module includes a plurality of reconfigurable secondary lenses that each cover a respective one of the LEDs; and
each opening of the cover is defined by sidewalls that reflect light emitted by the respective LED.

### Claim 19 (depends on 17)

The street light of claim 17, wherein each of the light modules is independently waterproof.

### Claim 20 (depends on 17)

The street light of claim 17, wherein the heat sink includes a plurality of fins having recesses therein, and wherein the recesses are approximately aligned with one another, the recesses collectively defining an elongate airflow path that extends in a same direction in which the plurality of LED devices collectively extend.

### Claim 21 (depends on 10)

The lighting instrument of claim 10, wherein each lighting module is secured to the street light housing through a springing force.

### Claim 22 (depends on 17)

The street light of claim 17, wherein the plurality of light modules are each individually detachably coupled to the housing through a screw-free springing mechanism.