CN220474625U

CN220474625U - Multicolor light-emitting LED filament and lamp

Info

Publication number: CN220474625U
Application number: CN202322063652.7U
Authority: CN
Inventors: 杨涛
Original assignee: Hangzhou Sky Lighting Co ltd
Current assignee: Hangzhou Sky Lighting Co ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2024-02-09
Anticipated expiration: 2033-08-02

Abstract

The utility model relates to the technical field of LED lamps, in particular to a multicolor light-emitting LED filament and a lamp, which aim to realize light-emitting of different colors with a simple structure, and have simpler production process and lower difficulty. The multicolor light-emitting LED filament comprises a substrate 1, wherein a light-emitting circuit is arranged on the substrate 1, and the light-emitting circuit is composed of at least two monochromatic light circuits emitting light rays with different colors, or is composed of at least two white light circuits with different color temperatures, or is composed of at least one monochromatic light circuit and at least one white light circuit. The lamp comprises at least one multi-color LED filament.

Description

Multicolor light-emitting LED filament and lamp

Technical Field

The utility model relates to the technical field of LED lamps, in particular to an LED filament with multicolor light emission and a lamp.

Background

In the fields of interior decoration, business places, urban landscapes and the like, for the purpose of enriching colorful lighting effects, an atmosphere is required to be created by using LED lamps capable of emitting various colors. The existing LED lamp usually uses various monochromatic LED lamp strips or filaments for combination, corresponding filaments are lightened under the control of a driving module to emit light with required colors, the assembly process of the lamp is complicated, the welding sequence of each line needs to be noted, and once errors occur, the light emitting result is deviated.

Some LED lamps use a manner of integrating multiple light sources in one filament to realize light emission of multiple colors, for example, an LED filament and a bulb provided by chinese patent No. 201822275030.X, where the LED filament includes a substrate, a plurality of connection lines are disposed on the substrate, each connection line is separately controlled, and each connection line is disposed with at least one of a red light source, a green light source, a blue light source and a white light source, and the LED filament includes at least two of a red light source, a green light source, a blue light source and a white light source. The LED lamp integrates a plurality of circuits, solves the problem of circuit welding sequence during the assembly of the LED lamp, but has the following defects: the LED filament has a complex structure, each red light source, each green light source and each blue light source circuit are required to be matched with specific fluorescent powder by using an LED flip chip to realize the luminescence of corresponding colors (for example, the red fluorescent powder emits red light after being excited by the blue light of the LED flip chip), the process is complex, the problems of light-emitting color deviation and the like caused by doping and mixing at the junction of the fluorescent powder are also required to be paid attention to, and the production difficulty is higher.

Disclosure of Invention

The utility model aims to overcome the defects in the background technology and provide the multi-color light-emitting LED filament and the lamp, wherein the LED filament can realize light-emitting of different colors with a simple structure, and the production process is simpler and the difficulty is lower.

The technical scheme adopted by the utility model is as follows: the utility model provides a polychromatic LED filament that goes out light, includes the base plate, is equipped with the luminescent line on the base plate, the luminescent line comprises at least two monochromatic light lines that send different colours light, every monochromatic light line is formed by the LED component electric connection of a plurality of direct corresponding colours lights that send out, and all monochromatic light lines on the base plate are covered by the glue that does not receive the excitation.

Preferably, the light emitting circuit is replaced by at least two white light circuits with different color temperatures, each white light circuit is composed of a plurality of electrically connected LED chips for generating excitation light and fluorescent glue which is used for coating all the chips on the circuit and is excited by the excitation light to generate white light, and all the white light circuits on the substrate are coated by the glue which is not excited.

Preferably, the light emitting circuit is replaced by at least one monochromatic light circuit and at least one white light circuit; each monochromatic light line is formed by electrically connecting a plurality of LED elements which directly emit light rays of corresponding colors; each white light circuit is composed of a plurality of LED chips which are electrically connected and used for generating exciting light rays and fluorescent glue which is used for coating all the chips on the circuit and is excited by the exciting light rays to generate white light; all monochromatic light lines on the substrate and the white light lines are covered by glue which is not excited.

Preferably, the monochromatic light line includes a red light line, a green light line, and a blue light line.

Preferably, the white light line includes a warm white light line, a positive white light line, and a cool white light line.

Preferably, each line of the light emitting line is connected with a common positive electrode, an IC chip for controlling on-off of each line is arranged on the substrate, the negative electrode of each line is connected to one side of the IC chip, and the other side of the IC chip is connected with the driving module.

Preferably, the LED elements of each of the monochromatic light lines are connected in series and/or parallel with each other.

Preferably, the LED chips of each of the white light lines are connected in series and/or parallel with each other.

Preferably, the glue is white glue or transparent glue or semitransparent glue.

The other technical scheme of the utility model is as follows: a lamp comprises at least one multi-color LED filament.

The utility model has the following beneficial effects: (1) The monochromatic light circuit directly emits the required monochromatic light by adopting a finished product LED element, a mode that each circuit is matched with specific fluorescent powder by using a flip chip is not needed, and the process is simpler; (2) The white light circuit has three color temperatures of warm white light, positive white light and cold white light, and has wider application range; (3) The glue water can isolate and protect the LED element, so that the environmental influence is reduced, and the heat dissipation conduction area can be increased to a certain extent; (4) The glue is not excited, is not influenced by the LED chip and the LED element, can realize the lens function to a certain extent, and enlarges the light extraction angle; (5) The common positive electrode is adopted, the IC chip is arranged on the substrate, and the negative electrodes of all the circuits are connected with the driving circuit through the IC chip, so that the on-off of the circuits can be conveniently controlled.

Drawings

Fig. 1 is a schematic plan view of embodiment 1 of the present utility model.

FIG. 2 is a schematic cross-sectional view of embodiment 1 of the present utility model.

Fig. 3 is a schematic plan view of embodiment 2 of the present utility model.

FIG. 4 is a schematic plan view of embodiment 3 of the present utility model

The drawings are as follows: the LED device comprises a substrate 1, a red LED element 2, a green LED element 3, a blue LED element 4, a blue LED chip 5, a public positive electrode 6, an IC chip 7, glue 8, yellow fluorescent glue 9, a red light line L1, a green light line L2, a blue light line L3, a warm white light line L4, a positive white light line L5 and a cold white light line L6.

Detailed Description

The objects, technical solutions and advantages of the present utility model will be further described with reference to the accompanying drawings and examples, but the present utility model is not limited to the following examples, for the purpose of making the objects, technical solutions and advantages of the present utility model more clearly understood by those skilled in the art.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model.

The utility model provides a multicolor light-emitting LED filament, which comprises a substrate 1, wherein a light-emitting circuit is arranged on the substrate 1, and the light-emitting circuit is composed of at least two monochromatic light circuits which emit light rays with different colors, or is composed of at least two white light circuits with different color temperatures, or is composed of at least one monochromatic light circuit and at least one white light circuit. The monochromatic light lines comprise a red light line L1, a green light line L2 and a blue light line L3, and can be selected in implementation. The white light circuit comprises warm white circuits, normal white circuits and cold white circuits with different color temperatures. All the light-emitting lines on the substrate 1 are covered by the glue 8 which is not excited, the glue 8 is white glue or transparent glue or semitransparent glue, and the glue 8 which is not excited can avoid being influenced by the LED chip and the LED element.

Each monochromatic light line is formed by electrically connecting a plurality of LED elements which directly emit light rays of corresponding colors, for example, a red light line L1 is formed by electrically connecting a plurality of red light LED elements 2, and the LED elements of each monochromatic light line are mutually connected in series and/or in parallel according to the voltage and current conditions output by the driving module. Each white light circuit is composed of a plurality of blue light LED chips 5 which are electrically connected and used for generating exciting light rays, and yellow fluorescent glue 9 which is used for coating all the chips on the circuit and is excited by the exciting light rays to generate white light, and the same is true of the monochromatic light circuit, and the LED chips of each white light circuit are mutually connected in series and/or in parallel. The blue light LED chip 5 excites yellow green light emitted from the yellow phosphor and the blue light emitted from the blue light LED chip 5 to synthesize white light, which is a conventional technology and will not be described in detail herein.

Each line in the luminous lines is connected with a public positive electrode 6, an IC chip 7 for controlling the on-off of each line is arranged on the substrate 1, the negative electrode of each line is connected to one side of the IC chip 7, the other side of the IC chip 7 is connected with a driving module, the driving module controls the on-off of different lines through the IC chip 7, and an on-off control element is not required to be arranged for each line independently.

Example 1

As shown in fig. 1, a red light circuit L1 formed by electrically connecting red LED elements 2, a green light circuit L2 formed by electrically connecting green LED elements 3, a blue light circuit L3 formed by electrically connecting blue LED elements 4, and a warm white light circuit formed by electrically connecting blue chips 5 and being covered with yellow fluorescent glue 9 are disposed on a substrate 1 of the present embodiment. As shown in fig. 2, the four wires and the substrate 1 are completely covered by the non-excited glue 8, forming a cylindrical filament. The anodes of the four lines are connected with the public anode 6, the cathodes are connected with one side controlled by the IC chip 7, the other side of the substrate 1 is connected with a driving module of the lamp, and after the LED filaments are connected with control signals sent by the driving module, the designated line cathodes are connected according to the control signals to form a current loop, and corresponding lines are lightened.

Example 2

As shown in fig. 3, the substrate 1 of the present embodiment is provided with a red light line L1 formed by electrically connecting the red LED elements 2 and a green light line L2 formed by electrically connecting the green LED elements 3. The two wires and the base plate 1 are completely covered by the non-excited glue 8, forming a cylindrical filament. The anodes of the two lines are connected with the public anode 6, the cathodes are connected with one side controlled by the IC chip 7, the other side of the substrate 1 is connected with a driving module of the lamp, and after the LED filaments are connected with control signals sent by the driving module, the designated line cathodes are connected according to the control signals to form a current loop, and corresponding lines are lightened.

Example 3

As shown in fig. 4, the substrate 1 of the present embodiment is provided with 3 white light lines, each of which is electrically connected by a blue LED chip 5 and is coated by a yellow fluorescent glue 9, and the three white light lines are a warm white light line L4 (with a color temperature of about 2700K), a positive white light line L5 (with a color temperature of about 5000K) and a cold white light line L6 (with a color temperature of above 6000K) with different color temperatures. The three wires and the base plate 1 are completely covered by the non-excited glue 8, forming a cylindrical filament. The anodes of the three lines are connected with the public anode 6, the cathodes are connected with one side controlled by the IC chip 7, the other side of the substrate 1 is connected with a driving module of the lamp, and after the LED filaments are connected with control signals sent by the driving module, the designated line cathodes are connected according to the control signals to form a current loop, and corresponding lines are lightened.

The lamp also provides a lamp, which comprises at least one multi-color LED filament, wherein the LED filament is combined with other conventional lamp components to form the lamp.

The components in the utility model are all existing mature components and are commercially available.

The foregoing description is only of the preferred embodiments of the present utility model, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a polychromatic LED filament that goes out light, includes base plate (1), is equipped with light emitting circuit on base plate (1), its characterized in that: the light-emitting circuit is composed of at least two monochromatic light circuits which emit light rays with different colors, each monochromatic light circuit is formed by electrically connecting a plurality of LED elements which directly emit light rays with corresponding colors, and all the monochromatic light circuits on the substrate (1) are coated by glue (8) which is not excited.

2. The multi-colored LED filament of claim 1, wherein: the light-emitting circuit is replaced by at least two white light circuits with different color temperatures, each white light circuit is composed of a plurality of LED chips which are electrically connected and used for generating excitation light rays, and fluorescent glue which is used for coating all the chips on each white light circuit and is excited by the excitation light rays to generate white light, and all the white light circuits on the substrate (1) are coated by the glue (8) which is not excited.

3. The multi-colored LED filament of claim 1, wherein: the luminous line is replaced by at least one monochromatic light line and at least one white light line; each monochromatic light line is formed by electrically connecting a plurality of LED elements which directly emit light rays of corresponding colors; each white light circuit is composed of a plurality of LED chips which are electrically connected and used for generating exciting light rays, and fluorescent glue which is used for coating all the chips of each white light circuit and is excited by the exciting light rays to generate white light; all monochromatic light lines on the substrate (1) are covered by glue (8) which is not excited.

4. A multi-colored LED filament according to claim 1 or 3, characterized in that: the monochromatic light lines include a red light line (L1), a green light line (L2), and a blue light line (L3).

5. A multi-colored LED filament according to claim 2 or 3, characterized in that: the white light lines include a warm white light line (L4), a positive white light line (L5), and a cool white light line (L6).

6. A multi-colored LED filament according to claim 1, 2 or 3, wherein: each line in the luminous lines is connected with a public positive electrode (6), an IC chip (7) for controlling the on-off of each line is arranged on the substrate (1), the negative electrode of each line is connected to one side of the IC chip (7), and the other side of the IC chip (7) is connected with a driving module.

7. A multi-colored LED filament according to claim 1 or 3, characterized in that: the LED elements of each monochromatic light line are connected in series and/or in parallel.

8. A multi-colored LED filament according to claim 2 or 3, characterized in that: the LED chips of each white light circuit are connected in series and/or in parallel.

9. A multi-colored LED filament according to claim 1, 2 or 3, wherein: the glue (8) is white glue or transparent glue or semitransparent glue.

10. A luminaire characterized in that it comprises at least one multi-colored LED filament according to claim 1 or 2 or 3.