Solar spectrum LED light source structure

Abstract

The utility model provides a solar spectrum light-emitting diode (LED) light source structure, which comprises a substrate, a plurality of light-emitting chips are arranged on the substrate, at least one light-emitting chip is an excitation light chip with a fluorescence excitation function, at least one light-emitting chip is an invisible light chip, and composite light fluorescent glue capable of being excited to emit visible light is covered on each light-emitting chip. Considering that various industrial fields generally have no specific requirements on visible light types but have specific requirements on invisible light types, the visible light is emitted in a mode that the exciting light chip excites the composite light fluorescent glue, and the invisible light is emitted in a mode that the invisible light chip directly emits the visible light. If another LED light source with other invisible light needs to be manufactured, a manufacturer can replace an original invisible light chip with a new invisible light chip on the basis of an original LED light source structure scheme, the original LED light source structure scheme does not need to be modified, and the new invisible light chip can be directly purchased as a ready-made product and does not need to be researched and developed again. And the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of LED light source structures, in particular to a solar spectrum LED light source structure. Background Art

[0002] The solar spectrum LED light source structure can emit visible light such as red light, orange light, yellow light, green light, cyan light, blue light, and purple light, and can also emit invisible light such as infrared light and ultraviolet light. The existing solar spectrum LED light source structure includes a substrate, on which a light-emitting chip is provided, and the light-emitting chip is covered with a composite light fluorescent glue, which is mainly composed of a mixture of a colloid for fluorescent powder, a visible light fluorescent powder, and an invisible light fluorescent powder. Composite light fluorescent glue refers to a fluorescent glue that can be excited to produce composite light, and the composite light is composed of the light excited by each fluorescent powder. For example, if there are visible light fluorescent powder and invisible light fluorescent powder in the composite light fluorescent glue, the composite light fluorescent glue can be excited to produce composite light composed of visible light and invisible light; if there are multiple visible light fluorescent powders in the composite light fluorescent glue, the composite light fluorescent glue can be excited to produce composite light composed of multiple visible lights. The light-emitting chip is an excitation light chip with fluorescence excitation function, that is, part of the light emitted by the excitation light chip can excite the composite light fluorescent glue to emit visible light corresponding to the color of the visible light fluorescent powder and invisible light corresponding to the color of the invisible light fluorescent powder, and the remaining light is emitted in the form of photons corresponding to the color of the light-emitting chip. The disadvantage of this solar spectrum LED light source structure is that the phosphor and the phosphor colloid need to be mixed in a specific ratio to achieve the simultaneous emission of visible light and invisible light. The mixing ratio of the invisible light phosphor and the phosphor colloid is not conventional. If another LED light source with other invisible light is required, a new ratio needs to be configured and research and development tests need to be re-performed. However, special industrial fields usually have specific requirements for invisible light wavelengths. For example, a special industrial field requires infrared light with a wavelength of 1090-1100nm, and the solar spectrum LED light source structure does not have this kind of infrared light. In this case, the manufacturer needs to reconfigure the mixing ratio of the new phosphor combination and the phosphor colloid according to the new phosphor combination, that is, the original LED light source structure scheme needs to be modified. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a solar spectrum LED light source structure, so that the manufacturer can change the type of invisible light on the original LED light source structure scheme and produce another LED light source with other invisible light without modifying the original LED light source structure scheme.

[0004] In order to solve the above technical problems, the utility model provides a solar spectrum LED light source structure, which includes a substrate, on which a variety of light-emitting chips are arranged, wherein at least one light-emitting chip is an excitation light chip with fluorescence excitation function, and at least one light-emitting chip is an invisible light chip, and each light-emitting chip is covered with a composite light fluorescent glue that can be excited to emit visible light.

[0005] Furthermore, the excitation light chip is a blue light chip, and a portion of the light emitted by the blue light chip excites the composite light fluorescent glue to emit visible light corresponding to the luminescent color of the visible light fluorescent powder, and the remaining light emits blue light corresponding to the luminescent color of the blue light chip in the form of photons.

[0006] Furthermore, the utility model provides multiple types of excitation light chips, one of which is a purple light chip. A part of the light emitted by the purple light chip excites the composite light fluorescent glue to emit visible light corresponding to the luminous color of the visible light fluorescent powder, and the remaining light emits purple light corresponding to the luminous color of the purple light chip in the form of photons.

[0007] Furthermore, the invisible light chip includes an ultraviolet light chip and an infrared light chip.

[0008] Furthermore, various light-emitting chips are evenly distributed.

[0009] Furthermore, the light-emitting chip provided in the utility model is a face-up structure or a flip-down structure, and a ceramic conductive sheet is provided on the substrate. The light-emitting chip provided in the utility model is specifically provided on the ceramic conductive sheet.

[0010] Furthermore, the light-emitting chip provided by the utility model is adhered to the ceramic conductive sheet through an interface material.

[0011] Furthermore, the composite fluorescent glue includes red fluorescent powder that can be excited to emit red light, yellow fluorescent powder that can be excited to emit yellow light, green fluorescent powder that can be excited to emit green light, cyan fluorescent powder that can be excited to emit cyan light, and blue fluorescent powder that can be excited to emit blue light.

[0012] Furthermore, the light source structure is a COB light source structure.

[0013] The utility model takes into account that various industrial fields usually have no specific requirements for visible light types but have specific requirements for invisible light types. The utility model uses an excitation light chip to excite a composite light fluorescent glue to emit visible light, and uses an invisible light chip to directly emit invisible light. If it is necessary to produce another LED light source with other invisible light, the manufacturer can replace the original invisible light chip with a new invisible light chip on the original LED light source structure plan, without modifying the original LED light source structure plan, and the new invisible light chip can be directly purchased as a ready-made product, without the need for re-research and development, and the cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a top view of the solar spectrum COB light source structure;

[0015] Figure 2 It is a front view schematic diagram of a light emitting chip mounted on a substrate;

[0016] Figure 3 It is a schematic diagram of the main view of the light emitting chip mounted on the ceramic conductive sheet;

[0017] Figure 4 It is a schematic diagram of the main view of the substrate structure.

[0018] Explanation of the accompanying drawings: 1. Substrate; 10. Substrate body; 11. Circuit layer; 12. Conductor coating; 2. Light-emitting chip; 21. Blue light chip; 22. Red light chip; 23. Purple light chip; 24. Ultraviolet light chip; 25. Infrared light chip; 3. Composite light fluorescent glue; 4. Gold wire; 5. High thermal conductivity nano interface material; 6. Ceramic conductive sheet. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with specific implementation methods.

[0020] See Figure 1 The solar spectrum COB light source structure includes a substrate 1. The substrate 1 is shown in Figure 4 , comprising a substrate body 10, a circuit layer 11 is provided on the front of the substrate body 10, a conductor coating 12 is provided on the front of the circuit layer 11, and the conductor coating 12 is preferably a silver-plated layer and a nickel-palladium-gold-plated layer. Figure 1 A plurality of light-emitting chips 2 are arranged on the substrate 1, and each light-emitting chip 2 is electrically connected through a gold wire 4. The light-emitting chip 2 is generally as follows: Figure 2 As shown, the high thermal conductivity nano interface material 5 is pasted on the substrate 1; if the light emitting chip 2 is a face-up structure or a flip-down structure, then Figure 3 As shown, a ceramic conductive sheet 6 is provided on the substrate 1, and the light-emitting chip 2 is adhered to the ceramic conductive sheet 6 through a high thermal conductivity nano-interface material 5. In this solution, the ceramic conductive sheet 6 has excellent conductivity, thermal stability and heat dissipation performance. A plurality of upright structure light-emitting chips 2 or a plurality of flip-chip structure light-emitting chips 2 can be connected in series in large quantities through the ceramic conductive sheet 6.

[0021] In the solar spectrum COB light source structure, see Figure 2 , 3The light emitting chip 2 is covered with a composite light fluorescent glue 3 that can be excited to emit visible light. The composite light fluorescent glue 3 is a mixture of a fluorescent powder colloid and a plurality of visible light fluorescent powders. The composite light fluorescent glue 3 refers to a fluorescent glue that can be excited to emit composite light, and the composite light is composed of the light excited by each fluorescent powder. Each visible light fluorescent powder is specifically a red light fluorescent powder that can be excited to emit red light with a wavelength of 615-660nm, a yellow light fluorescent powder that can be excited to emit yellow light with a wavelength of 550-570nm, a green light fluorescent powder that can be excited to emit green light with a wavelength of 515-545nm, a cyan light fluorescent powder that can be excited to emit cyan light with a wavelength of 480-500nm, and a blue light fluorescent powder that can be excited to emit blue light with a wavelength of 430-470nm.

[0022] In the solar spectrum COB light source structure, see Figure 1There are multiple types of light-emitting chips 2, which are evenly distributed, so that the light source emits uniform and soft light. Each light-emitting chip 2 is a blue light chip 21 with a light-emitting wavelength of 440-445nm, a purple light chip 23 with a light-emitting wavelength of 395-400nm, a red light chip 22 with a light-emitting wavelength of 760-765nm, an ultraviolet light chip 24 with a light-emitting wavelength of 365-370nm, and multiple infrared light chips 25. The light-emitting wavelengths of each infrared light chip 25 are 805-810nm, 850-855nm, 900-905nm, 950-955nm, 1000-1010nm, 1040-1050nm, 1090-1100nm, 1150-1155nm, and 1180-1190nm. The blue light chip 21 also serves as an excitation light chip. A portion of the light emitted by the blue light chip 21 excites the composite light fluorescent glue 3 to emit five visible lights, namely, red light with a wavelength of 615-660nm, yellow light with a wavelength of 550-570nm, green light with a wavelength of 515-545nm, cyan light with a wavelength of 480-500nm and blue light with a wavelength of 430-470nm. The remaining light is emitted in the form of photons as blue light with a wavelength of 440-445nm. The purple light chip 23 also serves as an excitation light chip. A portion of the light emitted by the purple light chip 23 excites the composite light fluorescent glue 3 to emit red light with a wavelength of 615-660nm, yellow light with a wavelength of 550-570nm, green light with a wavelength of 515-545nm, cyan light with a wavelength of 480-500nm and blue light with a wavelength of 430-470nm. 70nm blue light and other 5 kinds of visible light, the remaining light is emitted in the form of photons to form purple light with a wavelength of 395-400nm. The blue light chip 21 and the purple light chip 23 are used as excitation light chips at the same time. Compared with the use of the blue light chip 21 alone or the purple light chip 23 alone, the excited visible light spectrum is wider and continuous, and the color rendering is higher; the infrared light chip 25 is used as a visible light chip, and the wavelength of the emitted red light is 760-765nm, which is different from the red light of 615-660nm emitted by the excitation composite light fluorescent glue 3. The two red lights have different wavelengths and can be used in different fields, thereby improving the applicability of the light source; the ultraviolet light chip 24 and the infrared light chip 25 are both used as invisible light chips, especially the infrared light chip 25 has multiple types, which can meet the needs of many special industrial fields for invisible light.

[0023] As soon as the solar spectrum COB light source structure is powered on, each light-emitting chip 2 emits light at the same time. The solar spectrum COB light source structure can emit a variety of visible light and a variety of invisible light. The visible light is red light with a wavelength of 760-765nm, red light with a wavelength of 615-660nm, yellow light with a wavelength of 550-570nm, green light with a wavelength of 515-545nm, cyan light with a wavelength of 480-500nm, blue light with a wavelength of 430-470nm, blue light with a wavelength of 440-445nm and violet light with a wavelength of 395-400nm. The red light with a wavelength of 615-660nm, the yellow light with a wavelength of 550-570nm, the green light with a wavelength of 515-545nm, the cyan light with a wavelength of 480-500nm, the blue light with a wavelength of 430-470nm, the blue light with a wavelength of 440-445nm and the violet light with a wavelength of 395-400nm excited by the composite light fluorescent glue 3. The composite light is composed of six visible lights, namely green light with a wavelength of 365-370nm, cyan light with a wavelength of 480-500nm, blue light with a wavelength of 430-470nm and violet light with a wavelength of 395-400nm; the invisible lights are ultraviolet light with a wavelength of 365-370nm, infrared light with a wavelength of 805-810nm, infrared light with a wavelength of 850-855nm, infrared light with a wavelength of 900-905nm, infrared light with a wavelength of 950-955nm, infrared light with a wavelength of 1000-1010nm, infrared light with a wavelength of 1040-1050nm, infrared light with a wavelength of 1090-1100nm, infrared light with a wavelength of 1150-1155nm and infrared light with a wavelength of 1180-1190nm.

[0024] In other embodiments, each visible light phosphor is changed to a red light phosphor that can be excited to emit red light, an orange light phosphor that can be excited to emit orange light, a yellow light phosphor that can be excited to emit yellow light, a green light phosphor that can be excited to emit green light, a cyan light phosphor that can be excited to emit cyan light, a blue light phosphor that can be excited to emit blue light, and a violet light phosphor that can be excited to emit violet light.

[0025] In other embodiments, each visible light phosphor is changed to a red light phosphor that can be excited to emit red light, an orange light phosphor that can be excited to emit orange light, a yellow light phosphor that can be excited to emit yellow light, a green light phosphor that can be excited to emit green light, a cyan light phosphor that can be excited to emit cyan light, a blue light phosphor that can be excited to emit blue light, a purple light phosphor that can be excited to emit purple light, and a white light phosphor that can be excited to emit white light.

[0026] The above is only an implementation method of the invention, and does not limit the scope of patent protection. Those skilled in the art can make non-substantial changes or substitutions based on the invention, which still fall within the scope of patent protection.

Claims

1. A solar spectrum LED light source structure, characterized in that: The invention comprises a substrate (1), on which a plurality of light-emitting chips (2) are arranged, wherein at least one of the light-emitting chips (2) is an excitation light chip having a fluorescence excitation function, and at least one of the light-emitting chips (2) is an invisible light chip, and each of the light-emitting chips (2) is covered with a composite light fluorescent glue (3) that can be excited to emit visible light.

2. The solar spectrum LED light source structure according to claim 1, characterized in that: The excitation light chip is a blue light chip (21), a portion of the light emitted by the blue light chip (21) excites the composite light fluorescent glue (3) to emit visible light corresponding to the luminescent color of the visible light fluorescent powder, and the remaining light emits blue light corresponding to the luminescent color of the blue light chip (21) in the form of photons.

3. The solar spectrum LED light source structure according to claim 1 or 2, characterized in that: There are multiple types of excitation light chips, one of which is a purple light chip (23). A portion of the light emitted by the purple light chip (23) excites the composite light fluorescent glue (3) to emit visible light corresponding to the color of the visible light fluorescent powder, and the remaining light emits purple light corresponding to the color of the purple light chip (23) in the form of photons.

4. The solar spectrum LED light source structure according to claim 1, characterized in that: The invisible light chip comprises an ultraviolet light chip (24) and an infrared light chip (25).

5. The solar spectrum LED light source structure according to claim 1, characterized in that: The multiple light-emitting chips (2) are evenly distributed.

6. The solar spectrum LED light source structure according to claim 1, characterized in that: The light-emitting chip (2) is a face-up structure or a flip-down structure, a ceramic conductive sheet (6) is provided on the substrate (1), and the light-emitting chip (2) is specifically provided on the ceramic conductive sheet (6).

7. The solar spectrum LED light source structure according to claim 6, characterized in that: The light-emitting chip (2) is adhered to the ceramic conductive sheet (6) via an interface material (5).

8. The solar spectrum LED light source structure according to claim 1, characterized in that: The light source structure is a COB light source structure.

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