# US 11,898,729 B2 · Lighting apparatus

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- Number: US 11,898,729 B2
- Document ID: US11898729B2
- Status: Granted
- Kind: B2
- Application number: 17/994,369
- Filed: 2022-11-27
- Published: 2023-12-28
- Granted: 2024-02-13
- Earliest claimed: 2022-06-10
- Assignees: Leedarson Lighting Co., Ltd.
- Applicants: Leedarson Lighting Co., Ltd.
- Inventors: Yunfei Ou; Aijun Cheng; Bin Yi; Chengliang Liang; Hongxian San; Zongyuan Liu; Haiyan Chen; Yongjun Bao
- Web page: https://patentgrep.com/patent/US11898729B2

## CPC

- F21V 17/002: {with provision for interchangeability, i.e. component parts being especially adapted to be replaced by another part with the same or a different function (F21V17/10 takes precedence)}
- F21V 21/005: for several lighting devices in an end-to-end arrangement, i.e. light tracks
- F21V 5/00: Refractors for light sources (characterised by cooling arrangements F21V29/504)
- 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 23/003: {the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array}
- F21V 23/008: {the casing being outside the housing of the lighting device}
- 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
- 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

A lighting apparatus includes a driver module, a light source, a main housing and an optical plate. The driver module converts an external power to a driving current. The light source includes multiple LED chips. The light source is coupled to to the drive module to emit a light. The main housing is used for disposing the driver module and the light source. The optical plate is detachably inserted into a sliding track of the main housing via a lateral opening of the main housing so that the optical plate is replaceable. The optical plate changes a light direction of the light emitted by the light source to a light opening. A first surface of the light opening is substantially perpendicular to a second surface of the lateral opening.

## Claims

### Claim 1

A lighting apparatus, comprising:
a driver module for converting an external power to a driving current;
a light source comprising multiple LED chips, wherein the light source is coupled to the drive module to emit a light;
a main housing for disposing the driver module and the light source; and
an optical plate for detachably inserting into a sliding track of the main housing via a lateral opening of the main housing so that the optical plate is replaceable, wherein the optical plate changes a light direction of the light emitted by the light source to a light opening, wherein a first surface of the light opening is substantially perpendicular to a second surface of the lateral opening, wherein the light source includes a first light module and a second light module, wherein there are two optical plates for respectively inserting into two sliding tracks of the main housing, wherein the two light modules are disposed on two sides of the driver module.

### Claim 2 (depends on 1)

The lighting apparatus of claim 1, wherein the optical plate is a lens layer.

### Claim 3 (depends on 2)

The lighting apparatus of claim 2, wherein the lens layer has multiple lenses respectively arranged to cover the multiple LED chips.

### Claim 4 (depends on 2)

The lighting apparatus of claim 2, wherein a first group of the multiple lenses located in a central area of the lens layer are condensing lenses, wherein a second group of the multiple lenses located in a peripheral area of the lens layer are diffusing lenses.

### Claim 5 (depends on 1)

The lighting apparatus of claim 1, wherein the optical plate is a diffusion layer.

### Claim 6 (depends on 1)

The lighting apparatus of claim 1, wherein the main housing has two lateral covers on two sides of the main housing to fix the driver module and the light source.

### Claim 7 (depends on 6)

The lighting apparatus of claim 6, wherein the lateral openings are disposed on one of the lateral covers.

### Claim 8 (depends on 6)

The lighting apparatus of claim 6, wherein the main housing has a support plate with multiple convex parts engaging the optical plate, wherein the support plate has multiple concave parts for placing the first light module and the second light module.

### Claim 9 (depends on 1)

The lighting apparatus of claim 1, wherein an emergency module is detachably inserted into a function track of the main housing to supply power to the light source under an emergency condition.

### Claim 10 (depends on 1)

The lighting apparatus of claim 1, wherein a communication module is detachably inserted into a function track of the main housing to empower the driver module to communicate with an external device.

### Claim 11 (depends on 1)

The lighting apparatus of claim 1, wherein the light source is detachably inserted via a light track of the main housing so that the light source is replaceable.

### Claim 12 (depends on 11)

The lighting apparatus of claim 11, wherein the light source has an insulation layer covering the LED chips.

### Claim 13 (depends on 12)

The lighting apparatus of claim 12, wherein the insulation layer is transparent and containing multiple lenses.

### Claim 14 (depends on 1)

The lighting apparatus of claim 1, wherein the light source and the optical plate are integrated as a integrated module to be detachably inserting into the sliding track so that the integrated module is replaceable.

### Claim 15 (depends on 1)

The lighting apparatus of claim 1, wherein the optical plate has an identification unit coupled to the driver module to indicate a type of the optical plate when the optical plate is inserted into the sliding track.

### Claim 16 (depends on 15)

The lighting apparatus of claim 15, wherein the identification unit is a digital label stored in the optical plate, wherein the driver module retrieves the digital label to adjust the driving current to fit the type of the optical plate.

### Claim 17 (depends on 15)

The lighting apparatus of claim 15, wherein the identification unit is a physical structure, wherein the driver module recognizes the physical structure to adjust the driving current to fit the type of the optical plate.

### Claim 18 (depends on 1)

The lighting apparatus of claim 1, wherein the optical plate has multiple optical parts respectively corresponding to the multiple LED chips, wherein each optical part has a concave portion for containing one corresponding LED chip, wherein each optical part has a flat part engaging a base plate of the light source, wherein the concave portion has an inner surface with a first curve surface enclosing the corresponding LED chip, wherein each optical part has an outer surface with a second curve surface with a same curve direction as the first curve surface.