# US 12,222,100 B2 · Daylight LED light, daylight LED light apparatus, and daylight LED floodlight apparatus

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- Number: US 12,222,100 B2
- Document ID: US12222100B2
- Status: Granted
- Kind: B2
- Application number: 18/273,954
- Filed: 2022-05-10
- Published: 2024-12-12
- Granted: 2025-02-11
- Earliest claimed: 2021-05-11
- Assignees: Solar Mission Co., Ltd.
- Applicants: Solar Mission Co., Ltd.
- Inventors: Gi Suk Sung
- Web page: https://patentgrep.com/patent/US12222100B2

## CPC

- F21V 9/02: for simulating daylight (F21V9/04, F21V9/06 take precedence)
- F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
- F21K 9/238: Arrangement or mounting of circuit elements integrated in the light source
- F21K 9/278: Arrangement or mounting of circuit elements integrated in the light source
- F21K 9/64: using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
- F21V 9/40: with provision for controlling spectral properties, e.g. colour, or intensity
- F21V 15/01: Housings, e.g. material or assembling of housing parts (F21V15/02 takes precedence {housings forming signs or letters G09F13/04})
- F21V 23/00: Arrangement of electric circuit elements in or on lighting devices {(characterised by cooling arrangements F21V29/508)}
- F21V 23/02: the elements being transformers, impedances {or power supply units, e.g. a transformer with a rectifier}
- F21V 29/503: of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858)
- F21V 29/763: {the planes containing the fins or blades having the direction of the light emitting axis}
- H05B 45/20: Controlling the colour of the light
- F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements
- F21Y 2105/12: characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
- F21Y 2105/16: square or rectangular, e.g. for light panels
- F21Y 2105/18: annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
- F21Y 2113/13: comprising an assembly of point-like light sources
- F21Y 2115/10: Light-emitting diodes [LED]
- H05B 45/37: Converter circuits
- 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
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- 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 daylight LED light, a daylight LED light apparatus, and a daylight LED floodlight apparatus are provided. A daylight LED light according to an embodiment of the present inventive concept comprises: a plurality of first LED light sources having a color temperature of 5000 to 6500 K when emitting light, by applying RGB phosphors on purple light-emitting LED chips; a plurality of second LED light sources having a color temperature of 2500 to 3000 K when emitting light, by applying RGB phosphors on purple light-emitting chips; and a plurality of third LED light sources formed from red light-emitting LED chips. The number of first LED light sources is greater than the number of third LED light sources, and the number of third LED light sources is greater than the number of second LED light sources.

## Claims

### Claim 1

A daylight LED light comprising:
a plurality of first LED light sources having a color temperature of 5000 to 6500 K when emitting light, by applying RGB phosphors onto purple light-emitting LED chips;
a plurality of second LED light sources having a color temperature of 2500 to 3000 K when emitting light, by applying RGB phosphors onto purple light-emitting LED chips; and
a plurality of third LED light sources having red light-emitting LED chips,
wherein the number of first LED light sources is greater than the number of third LED light sources, and the number of third LED light sources is greater than the number of second LED light sources.

### Claim 2 (depends on 1)

The daylight LED light according to claim 1, further comprising rectangular plate-shaped PCB substrates for arranging the first LED light sources, the second LED light sources, and the third LED light sources in rows and columns with given intervals thereon to provide light sources for a surface light source or fluorescent type light.

### Claim 3 (depends on 1)

The daylight LED light according to claim 1, further comprising a circular plate-shaped PCB substrate for radially arranging the first LED light sources, the second LED light sources, and the third LED light sources thereon to provide light sources for a bulb.

### Claim 4 (depends on 1)

The daylight LED light according to claim 1, wherein the color temperature of each first LED light source is 6500 K, the color temperature of each second LED light source is 2700 K, and the wavelength of each third LED light source is in the range of 660 to 780 nm.

### Claim 5 (depends on 1)

The daylight LED light according to claim 1, wherein if the total LED light sources have the same power, the percentage of the first LED light sources with respect to the total LED light sources is in the range of 50 to 90%, the percentage of the second LED light sources with respect to the total LED light sources is in the range of 0 to 10%, and the percentage of the third LED light sources with respect to the total LED light sources is in the range of 10 to 40%.

### Claim 6 (depends on 5)

The daylight LED light according to claim 5, wherein the ratio of the first LED light sources to the second LED light sources to the third LED light sources is 6:1:3.

### Claim 7 (depends on 1)

A daylight LED light apparatus comprising:
the daylight LED light having the PCB substrates adapted to mount the first LED light sources, the second LED light sources, and the third LED light sources thereon according to claim 1;
a converter for converting alternating current received into direct current for driving the LED light sources of the daylight LED light;
a housing for accommodating the LED light sources and the converter therein; and
a transparent or semi-transparent diffusion cover disposed on one side of the housing to face the LED light sources.

### Claim 8 (depends on 7)

The daylight LED light apparatus according to claim 7, wherein the housing is a case having a bottom and wall bodies formed along the edges of the bottom, the diffusion cover is disposed to face the bottom in such a way as to be coupled to the end portions of the wall bodies, and the PCB substrates have the shapes of rectangular plates and are located on the bottom, so that if the number of PCB substrate is one, the LED light sources become fluorescent type light sources, and if a plurality of PCB substrates are arranged at given intervals, the LED light sources become surface light sources.

### Claim 9 (depends on 7)

The daylight LED light apparatus according to claim 7, wherein the housing comprises a cylindrical bulb body for emitting the heat generated to the outside and a socket located on the underside of the bulb body to supply power to the inside of the bulb, the diffusion cover is disposed to face the PCB substrate in such a way as to be coupled to top of the bulb body, and the PCB substrate has the shape of a circular plate and is located at the inside of the bulb body, so that the LED light sources become bulb type light sources.

### Claim 10

A daylight LED floodlight apparatus comprising:
a plurality of first LED light sources having a color temperature of 5500 to 5700 K when emitting light, by applying RGB phosphors onto purple light-emitting LED chips;
at least one or more second LED light sources as red light-emitting LEDs having a peak wavelength of 630 to 720 nm; and
at least one or more third LED light sources as red light-emitting LEDs having a peak wavelength of 730 to 780 nm,
wherein the number of first LED light sources is greater than the number of LED light sources made by adding the number of second LED light sources and the number of third LED light sources.

### Claim 11 (depends on 10)

The daylight LED floodlight apparatus according to claim 10, wherein the number of third LED light sources is greater than the number of second LED light sources.

### Claim 12 (depends on 11)

The daylight LED floodlight apparatus according to claim 11, wherein if the total LED light sources have the same power, the output percentage of the first LED light sources with respect to the total LED light sources is in the range of 65 to 92%, the output percentage of the second LED light sources with respect to the total LED light sources is in the range of 3 to 15%, and the output percentage of the third LED light sources with respect to the total LED light sources is in the range of 5 to 20%.

### Claim 13 (depends on 11)

The daylight LED floodlight apparatus according to claim 11, wherein the installation area percentage of the first LED light sources with respect to the installation area of the total LED light sources is in the range of 80 to 90%, the installation area percentage of the second LED light sources with respect to the installation area of the total LED light sources is in the range of 4 to 8%, and the installation area percentage of the third LED light sources with respect to the installation area of the total LED light sources is in the range of 6 to 12%.

### Claim 14 (depends on 10)

The daylight LED floodlight apparatus according to claim 10, further comprising:
a stand for supporting PCT substrates on which the first LED light sources, the second LED light sources, and the third LED light sources are mounted against one surface thereof;
a heat transfer member located on the other surface of the stand to transfer the heat generated from the first LED light sources, the second LED light sources, and the third LED light sources to the outside;
a heat radiation member coming into close contact with the heat transfer member to radiate the heat received from the heat transfer member to the outside;
a converter for converting alternating current received into direct current for driving the first LED light sources, the second LED light sources, and the third LED light sources; and
a housing for accommodating the stand and the converter, while exposing the front surfaces of the first LED light sources, the second LED light sources, and the third LED light sources to the outside, and having a plurality of holes through which the radiation heat of the heat radiation member is exhausted to the outside, the holes being formed to face the heat radiation member.