Blue-green mixed cyan light source module and lighting system

Abstract

The utility model discloses a blue-green mixed cyan light source module and a lighting system, the light source module comprises a substrate, the substrate is provided with a plurality of light-emitting chips, a first bonding pad and a second bonding pad, the light-emitting chips are internally integrated with blue light LED chips and green light LED chips, and the first bonding pad and the second bonding pad are integrated with the blue light LED chips and the green light LED chips. The blue-light LED chips and the green-light LED chips are arranged in a crossed linear array, and the blue-light LED chips, the green-light LED chips, the first bonding pad and the second bonding pad are electrically connected to form a light source circuit. According to the technical scheme, the blue-light LED chip and the green-light LED chip are integrated together to form the light-emitting chip capable of outputting the cyan light beams, the light-emitting chip can be achieved without the traditional means, the cyan light beams output by the light-emitting chip are uniform in color, the space utilization rate of the light-emitting chip is high, the packaging size is small, the stability of a light source is effectively improved, and the service life of the light source is effectively prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED light source technical field more specifically, the utility model relates to a kind of blue-green mixed cyan light source module and lighting system. BACKGROUND

[0002] In fishery lighting and underwater lighting applications, different wavelengths of light have different penetration characteristics in water. Studies have shown that blue light (440-470 nm) and green light (510-540 nm) have low attenuation coefficients in seawater, with a long propagation distance, so the cyan light formed by mixing blue and green light is widely used in pelagic fish aggregation lamps, deep-sea lighting equipment and other scenarios to achieve efficient fish attraction and underwater vision enhancement. Traditional cyan light sources mainly rely on the following methods: using blue LED chips to excite yellow or green phosphor, and generating composite light through fluorescence conversion.

[0003] The above prior art has significant defects. The prior art has Stokes shift loss, low light conversion efficiency, and phosphor aging in high temperature and high humidity environment, resulting in spectral drift and life decline. In addition, the light source in the prior art can usually only output fixed spectrum, and cannot dynamically adjust the light color according to the type of fish school, water depth or environmental illumination, with poor adaptability. SUMMARY

[0004] To solve the above technical problems, the purpose of the utility model is to provide a blue-green mixed cyan light source module and lighting system.

[0005] The technical solution adopted by the utility model to solve the problem is:

[0006] A blue-green mixed cyan light source module, comprising a substrate, a plurality of blue LED chips, a plurality of green LED chips, a first pad and a second pad are provided on the substrate, the number of blue LED chips is consistent with the number of green LED chips, one blue LED chip and one green LED chip are arranged together to form a light emitting chip, the wavelength range of the light output by the blue LED chip is 440-470 nm, and the wavelength range of the light output by the green LED chip is 510-540 nm.

[0007] In the light emitting chip, the center distance between the blue LED chip and the green LED chip is less than 10 mm.

[0008] Each blue LED chip, each green LED chip, the first pad and the second pad are electrically connected to form a light source circuit.

[0009] As a further improvement of the above technical solution, one of the first pad and the second pad is provided, and each of the blue light LED chip and the green light LED chip is connected in series between the first pad and the second pad.

[0010] As a further improvement of the above technical solution, one of the first pad and the second pad is provided, and each of the blue light LED chip and the green light LED chip is connected in series between the first pad and the second pad.

[0011] As a further improvement of the above technical solution, one of the first pad and the second pad is provided, and each of the blue light LED chip and the green light LED chip is connected in series between the first pad and the second pad.

[0012] As a further improvement of the above technical solution, one of the first pad and the second pad is provided, and each of the blue light LED chip and the green light LED chip is connected in series between the first pad and the second pad.

[0013] As a further improvement of the above technical solution, each of the blue light LED chip and the green light LED chip is a flip chip.

[0014] As a further improvement of the above technical solution, the substrate is provided with a packaging layer, the packaging layer covers all the light emitting chips, and the packaging layer is a transparent silica gel layer.

[0015] As a further improvement of the above technical solution, the substrate is an aluminum substrate or a copper substrate or a copper-aluminum composite substrate or a ceramic substrate.

[0016] The utility model discloses a kind of lighting systems, including drive power supply and the blue-green mixed cyan light source module described above, the drive power supply is connected with the first pad and the second pad respectively.

[0017] As a further improvement of the above technical solution, the drive power supply is configured to adjust the current value output to the blue light LED chip and the green light LED chip according to the control signal.

[0018] The utility model discloses a beneficial effect is: the technical scheme in this utility model is integrated together with blue light LED chip and green light LED chip to form the light emitting chip that can output cyan light beam, avoid using traditional means to realize, and the cyan light beam that light emitting chip exports, color is even, and the space utilization of light emitting chip is high, and the packing volume is small, effectively improve the stability and service life of light source. BRIEF DESCRIPTION OF DRAWINGS

[0019] The utility model will be further explained in the following combining with the description and specific embodiment.

[0020] Fig. 1 It is the first embodiment structure schematic drawing of light source module in the utility model;

[0021] Fig. 2 It is the second embodiment structure schematic drawing of light source module in the utility model;

[0022] Fig. 3 It is the third embodiment structure schematic drawing of light source module in the utility model;

[0023] Fig. 4 It is the fourth embodiment structure schematic drawing of light source module in the utility model. SPECIFIC EMBODIMENT

[0024] This part will describe the specific embodiment of the utility model in detail, and the preferred embodiment of the utility model is shown in the drawings, and the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0025] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relationship of up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, a specific orientation and operation, so it cannot be understood as the limitation of the utility model.

[0026] In the description of the utility model, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than and the like are not included in the number, and above, below, within and the like are included in the number. If it is described to the first, the second is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Reference Figs. 1 to 4 This application discloses a blue-green hybrid cyan light source module. In its first embodiment, it includes a substrate on which a plurality of blue LED chips, a plurality of green LED chips, a first pad, and a second pad are disposed. The number of blue LED chips is the same as the number of green LED chips. One blue LED chip and one green LED chip are disposed together to form a light-emitting chip. The wavelength range of the light output by the blue LED chip is 440nm to 470nm, and the wavelength range of the light output by the green LED chip is 510nm to 540nm.

[0029] Within the light-emitting chip, the center-to-center distance between the blue LED chip and the green LED chip is less than 10mm;

[0030] The blue LED chip, the green LED chip, the first pad, and the second pad are electrically connected to form a light source circuit.

[0031] Specifically, in this embodiment, the blue LED chip and the green LED chip are integrated together to form the light-emitting chip capable of outputting a cyan light beam, avoiding the use of traditional methods. The cyan light beam output by the light-emitting chip has a uniform color, high space utilization, and small package size, effectively improving the stability and lifespan of the light source.

[0032] Compared to existing technologies that use blue LED chips to excite phosphors to generate cyan light, this embodiment eliminates Stokes shift loss, achieves high light conversion efficiency, and avoids various drawbacks caused by phosphors after prolonged use. Furthermore, existing technologies utilize surface-mount blue and green LED chips to generate cyan light, but these solutions suffer from uneven light mixing. This embodiment, however, uses closely spaced blue and green LED chips to generate the cyan light beam, effectively improving the cyan light mixing effect.

[0033] In practical applications, the arrangement of the multiple light-emitting chips can be determined according to the situation. If this embodiment is applied to a lamp tube, the multiple light-emitting chips can be arranged in a linear array. If this embodiment is applied to a planar lamp, the multiple light-emitting chips can be arranged in a rectangular array or a ring array.

[0034] The light emitting chip in the embodiment can have various representations, and can be a patch lamp bead with a packaging structure, or a virtual device. The light emitting chip is regarded as a virtual device only for the convenience of the description of the embodiment. The region close to the blue light LED chip and the green light LED chip is defined as the light emitting chip. For example, the light emitting chip can be arranged as a patch lamp bead, and the blue light LED chip and the green light LED chip are integrated together in the patch lamp bead, and then a plurality of patch lamp beads are arranged on the substrate. The blue light LED chip and the green light LED chip can be arranged on a patch lamp bead respectively, and then two patch lamp beads are arranged on the substrate, as long as the two patch lamp beads are close to each other and the center distance between the blue light LED chip and the green light LED chip meets the requirement. The light emitting chip can be arranged as a virtual device, and the blue light LED chip and the green light LED chip are directly arranged on the substrate, and the center distance between the blue light LED chip and the green light LED chip meets the requirement.

[0035] As a further preferred embodiment, in the embodiment, one first pad and one second pad are arranged, and each of the blue light LED chips and each of the green light LED chips are connected in series between the first pad and the second pad.

[0036] As a further preferred embodiment, in the embodiment, each of the blue light LED chips and each of the green light LED chips are flip-chip type chips. In addition, the blue light LED chip and the green light LED chip are directly die-bonded on the pads of the substrate through tin paste or silver glue, and the chip electrode and the substrate pad realize face contact conduction.

[0037] As a further preferred embodiment, in the embodiment, a packaging layer is arranged on the substrate, the packaging layer covers all the light emitting chips, the packaging layer is a transparent silicone layer, and the transparent silicone layer does not contain red fluorescent powder. In the embodiment, the luminous flux of the blue light LED chip and the green light LED chip can be controlled by adjusting the effective value of the current. In the embodiment, if the blue light LED chip and the green light LED chip are lit to generate cyan light, the luminous flux ratio of the blue light LED chip and the green light LED chip needs to be controlled, and specifically, the luminous flux ratio of the blue light LED chip and the green light LED chip is controlled to be within the range of (1:2) to (2:1). Of course, in actual application, only the blue light LED chip or the green light LED chip can be controlled to be powered on to emit light, so as to realize the monochromatic light emitting function of the embodiment.

[0038] As a further preferred embodiment, in the embodiment, the substrate is an aluminum substrate or a copper substrate or a copper-aluminum composite substrate or a ceramic substrate.

[0039] The generating process of the embodiment in the actual production process mainly includes providing a substrate, manufacturing circuit pads on the substrate, fixedly mounting blue light LED chips and green light LED chips according to a preset ratio, flip-chip welding the fixedly mounted blue light LED chips and green light LED chips to realize electrical interconnection, dotting transparent silica gel layers on surfaces of the blue light LED chips and green light LED chips to control the shape of the gel surface, and high-temperature curing to obtain a final blue-green mixed cyan light source module.

[0040] The second embodiment of the cyan light source module of the application is different from the first embodiment thereof in that one first pad and one second pad are arranged in the embodiment, the anode of each blue light LED chip is connected with the first pad, the cathode of each blue light LED chip is connected with the second pad, the anode of each green light LED chip is connected with the second pad, and the cathode of each green light LED chip is connected with the first pad.

[0041] The third embodiment of the cyan light source module of the application is different from the first embodiment thereof in that one first pad and two second pads are arranged in the embodiment, the anode of each blue light LED chip and the anode of each green light LED chip are connected with the first pad in the light-emitting chip, the cathode of each blue light LED chip is connected with one of the second pads, and the cathode of each green light LED chip is connected with the other second pad.

[0042] The fourth embodiment of the cyan light source module of the application is different from the first embodiment thereof in that two first pads and two second pads are arranged in the embodiment, the anode of each blue light LED chip is connected with one of the first pads, the anode of each green light LED chip is connected with the other first pad, the cathode of each blue light LED chip is connected with one of the second pads, and the cathode of each green light LED chip is connected with the other second pad.

[0043] The application further discloses a lighting system, and a first embodiment of the lighting system includes a driving power supply and one of the embodiments of the blue-green mixed cyan light source module, and the driving power supply is connected with the first pad and the second pad respectively.

[0044] As a further preferred embodiment, the driving power supply is configured to adjust the current values output to the blue light LED chips and the green light LED chips according to a control signal in the embodiment. In the embodiment, the dynamic adjustment function of mixed light color is realized by adjusting the current values of the blue light LED chips and the green light LED chips, and the light beam emitted by the light source module is controlled to change between cyan light, green light and blue light.

[0045] The above are only preferred embodiments of the present application, and do not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A blue-green mixed cyan light source module, characterized by: The blue-green mixed light source module comprises a substrate, a plurality of blue light LED chips, a plurality of green light LED chips, a first pad and a second pad are arranged on the substrate, one of the blue light LED chips and one of the green light LED chips are arranged together to form a light emitting chip, the wavelength range of the light output by the blue light LED chip is 440nm to 470nm, and the wavelength range of the light output by the green light LED chip is 510nm to 540nm. The center distance between the blue light LED chip and the green light LED chip in the light emitting chip is less than 10mm. Each of the blue light LED chips, each of the green light LED chips, the first pad and the second pad are electrically connected to form a light source circuit.

2. The blue-green mixed light source module according to claim 1, characterized in that: One of the first pad and the second pad is arranged, each of the blue light LED chips and each of the green light LED chips are connected in series between the first pad and the second pad.

3. The blue-green mixed light source module according to claim 1, characterized in that: One of the first pad and the second pad is arranged, the positive electrode of each of the blue light LED chips is connected to the first pad, the negative electrode of each of the blue light LED chips is connected to the second pad, the positive electrode of each of the green light LED chips is connected to the second pad, and the negative electrode of each of the green light LED chips is connected to the first pad.

4. The blue-green mixed light source module according to claim 1, characterized in that: One of the first pad is arranged, two of the second pad are arranged, the positive electrode of the blue light LED chip and the positive electrode of the green light LED chip in the light emitting chip are connected to the first pad, the negative electrode of the blue light LED chip is connected to one of the second pad, and the negative electrode of the green light LED chip is connected to the other second pad.

5. The blue-green mixed light source module according to claim 1, characterized in that: Two of the first pad are arranged, two of the second pad are arranged, the positive electrode of the blue light LED chip is connected to one of the first pad, the positive electrode of the green light LED chip is connected to the other first pad, the negative electrode of the blue light LED chip is connected to one of the second pad, and the negative electrode of the green light LED chip is connected to the other second pad.

6. The blue-green mixed light source module according to claim 1, characterized in that: Each of the blue light LED chips and each of the green light LED chips is a flip chip.

7. The blue-green mixed light source module according to claim 6, characterized in that: A packaging layer is arranged on the substrate, the packaging layer covers all the light emitting chips, and the packaging layer is a transparent silica gel layer.

8. The blue-green mixed light source module according to claim 7, characterized in that: The substrate is an aluminum substrate or a copper substrate or a copper-aluminum composite substrate or a ceramic substrate.

9. A lighting system characterized by: The blue-green mixed light source module comprises a driving power supply and any one of claims 1 to 8, and the driving power supply is connected to the first pad and the second pad respectively.

10. A lighting system according to claim 9, characterized in that: The driving power supply is configured to adjust the current value output to the blue light LED chip and the green light LED chip according to a control signal.

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