Multi-primary-color powder-free filament lamp light source

Abstract

The utility model discloses a multi-primary-color powder-free filament lamp light source, which relates to the technical field of light sources and comprises an LED substrate, a light mixing unit is arranged on the LED substrate, a plurality of golden fingers are symmetrically arranged on two sides of the light mixing unit, and the light mixing unit is connected with the golden fingers. The light mixing unit comprises a first chip assembly, a second chip assembly and a third chip assembly, and light emitted by the first chip assembly, the second chip assembly and the third chip assembly is different in color; according to the multi-primary-color powder-free filament lamp light source, a plurality of chip assemblies are combined to emit light, the light display index is controllable, the light display capacity is high, meanwhile, the proportion of blue light chips is reduced, so that blue light harm is reduced, and the light temperature can be adjusted by controlling the light emitting proportion of the chips, so that the requirement of illumination scenes with rich light color changes is met.

Description

Technical Field

[0001] The utility model relates to the technical field of light sources, in particular to a multi-primary color powder-free filament lamp light source. Background Art

[0002] The common filament LED bulbs on the market today are typically composed of several LED light strips packaged in COB (chip-on-board) packaging assembled in a transparent bulb shell. This type of filament LED bulb uses a blue LED chip to emit blue light, which then uses the blue light to excite yellow phosphor to produce a mixed light that approximates white light. This not only has the same warm light dimming temperature as traditional incandescent lamps, but also has luminous efficiency and lifespan indicators that far exceed those of incandescent lamps, resulting in significant energy savings after replacement.

[0003] However, this type of COB-packaged LED has limited light rendering capabilities due to its use of phosphor light sources, making it difficult to achieve a high light rendering index and accurately restore the true color of objects, affecting the lighting quality and visual effects. At the same time, it uses a blue light LED chip as an excitation source. If the blue light emitted is not effectively controlled or processed, it may pose a potential threat to human health, especially the risk of retinal damage under long-term exposure. Moreover, since the light source mainly emits white light with a single color, it is difficult to meet the needs of lighting scenarios that require rich color changes. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-primary color powder-free filament lamp light source, which uses a combination of multiple chip components to emit light, has a controllable light rendering index and strong light rendering ability, while reducing the proportion of blue light chips, thereby reducing the hazards of blue light. The light temperature can be adjusted by controlling the proportion of chip light emission to meet the needs of lighting scenes with rich light changes.

[0005] The above-mentioned optimized structure of the present invention is achieved through the following technical solutions: a multi-primary color powder-free filament lamp light source, comprising an LED substrate, a light mixing unit provided on the LED substrate, a plurality of gold fingers symmetrically provided on both sides of the light mixing unit, and the light mixing unit being connected to the plurality of gold fingers;

[0006] The light mixing unit includes a first chip component, a second chip component and a third chip component. The colors of the light emitted by the first chip component, the second chip component and the third chip component are different.

[0007] In some embodiments, the first chip assembly includes a plurality of yellow LED chips, and the plurality of yellow LED chips are staggered on the LED substrate.

[0008] In some embodiments, the second chip assembly includes a plurality of green LED chips, and the plurality of green LED chips are staggered on the LED substrate.

[0009] In some embodiments, the third chip assembly includes multiple red LED chips, multiple orange LED chips, and multiple blue LED chips, and the multiple red LED chips, multiple orange LED chips, and multiple blue LED chips are all staggered on the LED substrate.

[0010] In some embodiments, the yellow LED chip, the green LED chip, the red LED chip, the blue LED chip and the orange LED chip are all square, and the area of ​​the yellow LED chip is larger than the area of ​​the green LED chip, the area of ​​the green LED chip is larger than the area of ​​the red LED chip, and the area of ​​the red LED chip is equal to the area of ​​the orange LED chip and the blue LED chip.

[0011] In some embodiments, the number of the red LED chips is 125, the number of the yellow LED chips is 81, the number of the orange LED chips is 81, the number of the green LED chips is 18, and the number of the blue LED chips is 15.

[0012] In some embodiments, the light mixing unit is connected to the LED substrate via a plurality of unit pads, and the unit pads are connected to the gold fingers.

[0013] In some embodiments, the unit pad includes a die-bonding pad, to which one of the yellow LED chip, the green LED chip, the red LED chip, the blue LED chip, and the orange LED chip is connected;

[0014] It also includes two auxiliary pads, which are vertically arranged and form a square structure with the die-bonding pad. The die-bonding pad and the auxiliary pad are connected with a bonding wire.

[0015] In summary, the present invention has the following beneficial effects:

[0016] This multi-primary color powder-free filament lamp light source uses a combination of multiple chip components to emit light, forming a multi-color spectrum on the LED substrate, enriching the spectral components, improving the color rendering ability, making the color reproduction more realistic, and staggering the LED chips of the same color to achieve a uniform mixed light effect. The light temperature can be adjusted by controlling the ratio of the luminous colors to meet the needs of lighting scenes with rich brilliance changes; at the same time, the proportion of blue light chips is reduced to reduce the harm of blue light. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the distribution of the light mixing unit on the LED substrate of the utility model;

[0018] Figure 2 This is a schematic structural diagram of the unit pad of the utility model.

[0019] In the figure: 1. LED substrate; 2. Gold finger; 3. First chip assembly; 4. Second chip assembly; 5. Third chip assembly; 6. Unit pad; 61. Die bonding pad; 62. Auxiliary pad; 63. Bonding wire. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] refer to Figure 1-2 A multi-primary color powder-free filament lamp light source includes an LED substrate 1, a light mixing unit is provided on the LED substrate 1, a plurality of gold fingers 2 are symmetrically provided on both sides of the light mixing unit, and the light mixing unit is connected to the plurality of gold fingers 2; the light source can be connected to the external circuit through the gold fingers. This is an existing technology and will not be described in detail here. The light mixing unit can be packaged through COB (chip on board), which has excellent dustproof, waterproof and impact-proof properties, and can improve the overall stability and service life of the light source.

[0022] The light mixing unit includes a first chip component 3, a second chip component 4 and a third chip component 5. The colors of the light emitted by the first chip component 3, the second chip component 4 and the third chip component 5 are different.

[0023] Specifically, the first chip component 3 includes multiple yellow LED chips, the second chip component 4 includes multiple green LED chips, and the third chip component 5 includes multiple red LED chips, multiple orange LED chips, and multiple blue LED chips. The multiple yellow LED chips, multiple green LED chips, multiple red LED chips, multiple orange LED chips, and multiple blue LED chips are all staggered on the LED substrate 1 to achieve uniform mixing of different colors of light, improve the color rendering index, and maintain the natural light effect of powder-free filaments. At the same time, a multi-color spectrum can be formed on the LED substrate 1, enriching the spectral components and further improving the color rendering ability. The light temperature can be adjusted by controlling the ratio of the luminous colors to meet the needs of lighting scenes with rich light changes.

[0024] In some embodiments, the yellow, green, red, blue, and orange LED chips are all square in shape. The yellow LED chip has a larger area than the green LED chip, which in turn has a larger area than the red LED chip. The red LED chip has an area equal to that of the orange and blue LED chips. By varying the area of ​​the LED chips by color, the LED chip can meet the luminous efficiency requirements of different wavelengths, thereby expanding the range of uses for the light source.

[0025] In some embodiments, there are 125 red LED chips, 81 yellow LED chips, 81 orange LED chips, 18 green LED chips, and 15 blue LED chips. This can achieve the best optical effect while reducing the proportion of blue light, thereby reducing the hazards of blue light.

[0026] In some embodiments, the light mixing unit is connected to the LED substrate 1 through multiple unit pads 6. The multiple unit pads 6 can be connected in series or in parallel and can be adjusted according to actual needs to meet the needs of different usage scenarios; the unit pads 6 are connected to the gold fingers 2 to ensure stable and reliable transmission of electrical signals. This is an existing technology and will not be repeated here.

[0027] The unit pad 6 includes a die-bonding pad 61, to which one of a yellow LED chip, a green LED chip, a red LED chip, a blue LED chip and an orange LED chip is connected; and further includes two auxiliary pads 62, which are vertically arranged and form a square structure with the die-bonding pad 61. The die-bonding pad 61 and the auxiliary pads 62 are connected with welding wires 63, which can optimize the welding wire layout and reduce cross interference.

[0028] The specific working principle is as follows:

[0029] During operation, an external power source supplies power to each LED chip through gold finger 2. Yellow, green, red, orange, and blue LED chips emit light simultaneously, with the light initially mixing within the light-mixing unit on LED substrate 1. Due to the staggered chip layout and square design, the light continuously scatters and interferes during propagation, forming a uniformly mixed multi-color light source. Ultimately, this mixed light is emitted through the light source surface, resulting in a high-color rendering, powder-free filament illumination.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A multi-primary color powder-free filament lamp light source, characterized by: It comprises an LED substrate (1), wherein a light mixing unit is provided on the LED substrate (1), a plurality of gold fingers (2) are symmetrically provided on both sides of the light mixing unit, and the light mixing unit is connected to the plurality of gold fingers (2); The light mixing unit comprises a first chip component (3), a second chip component (4) and a third chip component (5); the colors of the light emitted by the first chip component (3), the second chip component (4) and the third chip component (5) are all different; The first chip assembly (3) comprises a plurality of yellow LED chips, and the plurality of yellow LED chips are staggered and arranged on the LED substrate (1); The second chip assembly (4) comprises a plurality of green LED chips, and the plurality of green LED chips are staggered and arranged on the LED substrate (1); The third chip assembly (5) includes a plurality of red LED chips, a plurality of orange LED chips, and a plurality of blue LED chips, and the plurality of red LED chips, the plurality of orange LED chips, and the plurality of blue LED chips are all staggered on the LED substrate (1); The yellow LED chip, the green LED chip, the red LED chip, the blue LED chip and the orange LED chip are all square, and the area of ​​the yellow LED chip is larger than that of the green LED chip, the area of ​​the green LED chip is larger than that of the red LED chip, and the area of ​​the red LED chip is equal to that of the orange LED chip and the blue LED chip.

2. The multi-primary color powder-free filament lamp light source according to claim 1, characterized in that: There are 125 red LED chips, 81 yellow LED chips, 81 orange LED chips, 18 green LED chips, and 15 blue LED chips.

3. The multi-primary color powder-free filament lamp light source according to claim 1, characterized in that: The light mixing unit and the LED substrate (1) are connected via a plurality of unit pads (6), and the unit pads (6) are connected to the gold fingers (2).

4. The multi-primary color powder-free filament lamp light source according to claim 3, characterized in that: The unit pad (6) comprises a die-bonding pad (61), and one of the yellow LED chip, the green LED chip, the red LED chip, the blue LED chip, and the orange LED chip is connected to the die-bonding pad (61); It also includes two auxiliary pads (62), which are arranged vertically and form a square structure with the crystal-bonding pad (61), and the crystal-bonding pad (61) and the auxiliary pad (62) are connected by a welding wire (63).

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