Light source assembly and RGB lamp strip

Abstract

The embodiment of the utility model provides a light source assembly and a RGB lamp strip, the light source assembly comprises a lamp cup and a support, an installation space is arranged in the lamp cup, the support is arranged in the installation space, two ends of the support extend out of the installation space, three solid crystal areas are arranged on the support at intervals, blue light wafers are fixed on two of the solid crystal areas, and the blue light wafers are fixed on two of the solid crystal areas. The blue light wafer and the green light wafer are electrically connected with the support through gold threads, and the position, corresponding to one blue light wafer, of the lamp cup is covered with an excitation layer. The light source assembly is simple in structure, wafer installation can be completed by fixing the wafer in the wafer fixing area on the support, the double blue light wafers and the green light wafers are combined, blue light emitted by one of the blue light wafers can generate light of other colors after being excited by the excitation layer, and therefore high-color-rendering mixed light output is achieved, and the light source assembly is suitable for large-scale popularization and application. And the illumination requirements of different scenes are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting technical field, especially a light source subassembly and RGB lamp area. BACKGROUND

[0002] In the lighting technical field, the performance of light source subassembly directly influences the lighting effect and application range. With the market's continuous improvement of requirements on lighting light source in spectrum, color rendering and the like, developing new light source subassembly becomes an important direction for the sustained development of the industry.

[0003] Traditional light source subassembly has many limitations in structural design and spectrum configuration. On the one hand, part of light source subassembly leads to complex installation of internal components due to unreasonable structure, which not only increases the production difficulty, but also affects the stability and reliability of the product; on the other hand, in spectrum design, it is difficult to realize precise spectrum combination, and it is unable to meet the diversified needs of specific scenes for lighting light source. SUMMARY

[0004] The utility model provides a light source subassembly and RGB lamp area, aims at solving the problem of unreasonable structure of traditional light source subassembly leading to complex installation of components and being unable to meet the diversified needs of specific scenes for lighting light source in spectrum design.

[0005] The utility model embodiment provides a light source subassembly, including lamp cup and support, the installation space has in the lamp cup, the support is arranged in the installation space and both ends of the support stretch out the installation space, at least three fixed crystal areas are arranged on the support at intervals, two fixed crystal areas are fixed with blue light wafer, another fixed crystal area is fixed with green light wafer, the blue light wafer and green light wafer are electrically connected with the support through gold wire, the position corresponding to one of the blue light wafer of the lamp cup is covered with excitation layer.

[0006] Specifically, the lamp cup is provided with a first opening end in communication with the installation space, the first opening end is located above one of the blue light wafers, and the excitation layer is installed in the first opening end.

[0007] Specifically, the excitation layer includes nitride fluorescent powder.

[0008] Specifically, the lamp cup is further provided with a second opening end in communication with the installation space, the second opening end is arranged at intervals with the first opening end, the second opening end is located above the other blue light wafer and green light wafer, and a transparent silica gel layer is installed on the second opening end.

[0009] Specifically, the opening area of the second opening end is greater than the opening area of the first opening end.

[0010] Specifically, the first opening end and the second opening end have a partition wall therebetween.

[0011] Specifically, the first opening end and the second opening end are both arc-shaped grooves.

[0012] The utility model embodiment further provides an RGB lamp strip, including circuit board and setting on the circuit board the light source subassembly as above.

[0013] Specifically, the light source subassembly is provided with a plurality of light source subassemblies.

[0014] Specifically, the circuit board is provided with resistors, and the number of the resistors corresponds to the number of the wafers on each light source subassembly.

[0015] The utility model embodiment provides a light source subassembly and an RGB lamp strip, the light source subassembly includes lamp cup and support, and the lamp cup has installation space in it, and the support is arranged in the installation space and the both ends of the support are out of the installation space, and three fixed die areas are arranged on the support at intervals, two fixed die areas are fixed with blue light wafer, and another fixed die area is fixed with green light wafer, and the blue light wafer and green light wafer are electrically connected with the support through gold wire, and the position corresponding to one blue light wafer of the lamp cup is covered with excitation layer.The light source subassembly of the embodiment is simple in structure, and the wafer installation can be completed by fixing the wafer on the fixed die area of the support, and the combination of double blue light wafer and green light wafer is used, and the blue light emitted by one blue light wafer can generate other color light after excitation through the excitation layer, thereby realizing high color rendering index mixed light output and meeting the illumination demand of different scenes. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0017] Figure 1 The utility model embodiment provides a structure schematic diagram of a light source subassembly.

[0018] Figure 2 The utility model embodiment provides an explosion view of a light source subassembly.

[0019] Figure 3 The utility model embodiment provides a structure schematic diagram of an RGB lamp strip.

[0020] Explanation of marks in the drawing:

[0021] 1, light source assembly; 11, lamp cup; 111, mounting space; 112, first open end; 113, second open end; 12, support; 121, first die bonding area; 122, second die bonding area; 123, third die bonding area; 13, blue light wafer; 14, green light wafer; 15, gold wire; 16, excitation layer; 17, transparent silicone layer; 18, isolation wall; 19, electrode pin;

[0022] 2, RGB light strip; 21, circuit board; 22, resistor. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of described features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0025] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, unless otherwise clear from the context, the singular forms "a", "an" and "the" are intended to include the plural forms.

[0026] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0027] Please refer to Figures 1-2 The present application embodiment provides a light source assembly 1, which comprises a lamp cup 11 and a support 12. The lamp cup 11 has a mounting space 111 inside. The support 12 is arranged in the mounting space 111 and the two ends of the support 12 extend out of the mounting space 111. At least three die bonding areas are arranged on the support 12 at intervals. Two of the die bonding areas are fixed with blue light wafers 13, and the other die bonding area is fixed with a green light wafer 14. The blue light wafers 13 and the green light wafer 14 are electrically connected to the support 12 through gold wires 15. The lamp cup 11 covers an excitation layer 16 at a position corresponding to one of the blue light wafers 13.

[0028] In this embodiment, the lamp cup 11 is made of high-temperature-resistant insulating material (such as ceramic or engineering plastic), and has an installation space 111 inside for accommodating the support 12 and the light-emitting elements (i.e., three wafers). The lamp cup 11 is provided with a reflective curved surface corresponding to the installation position of each wafer to optimize the light-emission direction. The support 12 is a metal conductive support (such as a copper alloy), which penetrates through the installation space 111 of the lamp cup 11 and has electrode pins 19 extending out of the lamp cup 11 at both ends for external circuit connection. The support 12 extends linearly in the installation space 111 and out of the installation space 111, and the surface of the support 12 is separated into three independent die-bonding areas by insulation treatment (such as electroplating or coating). A blue light wafer 13 and a green light wafer 14 are fixed on the first die-bonding area 121 and the second die-bonding area 122, respectively, and the blue light wafer 13 can be an InGaN-based LED chip with a wavelength of 450-460 nm, and the green light wafer 14 can be a GaP-based LED chip with a wavelength of 520-530 nm. Both the blue light wafer 13 and the green light wafer 14 are 18V. Each wafer is bonded to the corresponding electrode of the support 12 by gold wire 15 to realize circuit connection. In order to meet the lighting needs of different scenes, an excitation layer 16 is coated at the position of one of the blue light wafers 13 (for example, above the first die-bonding area 121), and the blue light emitted by the blue light wafer 13 is converted into other color light by the excitation layer 16; the other blue light wafer 13 and the green light wafer 14 directly emit primary color light (i.e., the blue light wafer 13 emits blue light and the green light wafer 14 emits green light), so that the final light source of the light source assembly 1 has green light, blue light, and other color light excited by the excitation layer 16.

[0029] The working process of the entire light source assembly 1 is as follows: when current is conducted to the blue light wafers 13 and the green light wafer 14 through the support 12, the blue light wafers 13 and the green light wafer 14 are lit and emit light, and the blue light emitted by one of the blue light wafers 13 excites the excitation layer 16 on the lamp cup 11 to generate other color light. When two or more than two light sources are turned on, mixed light will occur. In specific implementation, a controller is connected outside the light source assembly 1, which can control the light source assembly 1 to turn on a single color light, turn on two color lights to form mixed light of two colors, or turn on three color lights to form mixed light of three colors. In this embodiment, the combination of the two blue light wafers 13 and the green light wafer 14, and the use of the blue light emitted by one of the blue light wafers to excite the excitation layer 16 to generate other color light, realize high color rendering mixed light output, and meet the lighting needs of different scenes.

[0030] In a specific implementation, the support 12 is an 8-pin double-cup support with a 3535 / 5050 package size, where 3535 represents an outer size of 3.5 mm x 3.5 mm (length x width), and 5050 represents an outer size of 5.0 mm x 5.0 mm (length x width). 3535 and 5050 are two different package sizes, and the specific one to be used depends on design requirements. 8-pin indicates that the support 12 has 8 electrode pins for electrical connection, and the 8-pin design can provide more flexible circuit configurations. Double-cup indicates that the support 12 has two independent lamp cup structures (two independent mounting positions in the mounting space 111), and each mounting position can independently encapsulate a wafer. In combination with Figure 2 As shown, a blue light wafer 13 is fixed on one mounting position, and a blue light wafer 13 and a green light wafer 14 are fixed on the other mounting position. Diffusion particles can also be sprayed on the reflective curved surface of the lamp cup 11 to improve light color uniformity.

[0031] Specifically, as shown in Figure 2 The lamp cup 11 is provided with a first opening end 112 that communicates with the mounting space 111, and the first opening end 112 is located above one of the blue light wafers 13, and the excitation layer 16 is mounted in the first opening end 112.

[0032] In this embodiment, the first opening end 112 for mounting the excitation layer 16 is arranged at the top of the lamp cup 11, i.e., directly above one of the blue light wafers 13, so that the excitation layer 16 can accurately receive the blue light emitted by the blue light wafer 13, thereby generating light of a specific color and emitting from the first opening end 112. The first opening end 112 of this embodiment can make the blue light emitted by the blue light wafer 13 travel to the excitation layer 16 in the shortest path and with the highest efficiency, effectively reducing the loss of light in the transmission process, improving the excitation efficiency, and thereby optimizing the spectral output quality of the light source assembly 1.

[0033] Specifically, the excitation layer 16 includes nitride fluorescent powder.

[0034] In this embodiment, the nitride fluorescent powder has high luminous efficiency and stability, and can effectively convert blue light into light of other colors, improving the spectral quality of the light source. In this embodiment, red nitride fluorescent powder can be used, and when blue light irradiates the excitation layer 16, the red nitride fluorescent powder absorbs blue light energy and generates red light through a fluorescent emission mechanism. In a specific implementation, different types of nitride fluorescent powder can be selected according to actual requirements to achieve different spectral effects.

[0035] Specifically, as shown in Figure 2As shown, the lamp cup 11 is further provided with a second open end 113 in communication with the mounting space 111, the second open end 113 is spaced apart from the first open end 112, the second open end 113 is located above the other blue light wafer 13 and the green light wafer 14, and the transparent silica gel layer 17 is mounted on the second open end 113.

[0036] In the embodiment, the second open end 113 for mounting the transparent silica gel layer 17 is further provided on the top of the lamp cup 11, and the second open end 113 is located above the other blue light wafer 13 and the green light wafer 14, so that the transparent silica gel layer 17 can accurately receive the blue light and green light emitted by the blue light wafer 13 and the green light wafer 14, improve the utilization efficiency of light, and make the light smoothly transmit from the second open end 113. The transparent silica gel layer 17 in the embodiment can not only protect the blue light wafer 13 and the green light wafer 14, but also make the light smoothly transmit. At the same time, the transparent silica gel layer 17 cooperates with the excitation layer 16 in the first open end 112 to further optimize the spectral distribution of the light source assembly 1, and meet the lighting needs of different scenes.

[0037] Specifically, as shown in Figure 2 The opening area of the second open end 113 is greater than that of the first open end 112.

[0038] In the embodiment, two wafers are fixed in the mounting space 111 communicated by the second open end 113. In the working process, the larger opening area of the second open end 113 ensures that the light emitted by the blue light wafer 13 and the green light wafer 14 can uniformly pass through the transparent silica gel layer 17 and ensure the light emission.

[0039] Specifically, as shown in Figure 2 The first open end 112 and the second open end 113 have a partition wall 18 therebetween.

[0040] In the embodiment, the partition wall 18 divides the mounting space 111 into two independent mounting positions, so that the first open end 112 and the second open end 113 are spaced apart. When the light source assembly 1 works, the partition wall 18 can prevent the substances in the two open ends from interfering with each other, prevent possible substance migration and light interference between the excitation layer 16 and the transparent silica gel layer 17, and thus ensure the normal work of the excitation layer 16 and the transparent silica gel layer 17.

[0041] Specifically, as shown in Figure 2 The first open end 112 and the second open end 113 are both arc-shaped grooves.

[0042] In the embodiment, the first opening end 112 and the second opening end 113 of the lamp cup 11 are designed as arc grooves, the arc grooves include arc sides and straight sides, the straight sides of the two arc grooves are oppositely arranged, and the two arc sides are away from each other. When the light emitted by the blue light chip 13 and the green light chip 14 is directed to the inner wall of the arc groove, the light will follow the law of reflection and be reflected on the smooth inner wall for multiple times. Taking the first opening end 112 as an example, a part of the blue light emitted by the blue light chip 13 directly excites the excitation layer 16, and another part of the blue light is reflected on the inner wall of the arc groove and then converges on the excitation layer 16 again, thereby greatly improving the excitation efficiency. For the second opening end 113, the light emitted by the blue light chip 13 and the green light chip 14 is reflected on the inner wall of the arc groove, thereby reducing the scattering of the light to the side, allowing more light to pass through the transparent silica gel layer 17 vertically or nearly vertically, effectively improving the utilization rate of the light, making the light distribution more concentrated, and significantly improving the lighting effect.

[0043] As shown in Figure 3 , the embodiment of the utility model also provides a RGB lamp strip 2, including circuit board 21 and set up on circuit board 21 as above described light source assembly 1.

[0044] In the embodiment, by integrating the light source assembly 1 on the circuit board 21, the circuit board 21 provides power supply for the light source assembly 1, so that the light source assembly 1 emits light, thereby realizing the lighting function of the RGB lamp strip 2, and facilitating installation and use in different lighting scenes.

[0045] Specifically, as shown in Figure 3 , the light source assembly 1 is provided with a plurality of light source assemblies 1 arranged in series.

[0046] In the embodiment, the series connection of the plurality of light source assemblies 1 can simplify the circuit connection, ensure that the working voltage and current of each light source assembly are consistent, facilitate unified control, and improve the stability of the lamp strip. In specific implementation, any light source assembly 1 on the RGB lamp strip 2 can be cut, and the cutting position is as shown in Figure 3 , that is, the connection line of the light source assembly 1 and the circuit board 21 is cut along the dotted line pointed by a, and after cutting one light source assembly 1 from the RGB lamp strip 2, the other light source assemblies 1 are not affected and still work normally.

[0047] Specifically, as shown in Figure 3 , the circuit board is provided with resistors 22, and the number of the resistors 22 corresponds to the number of the chips on each light source assembly 1.

[0048] In the embodiment, the corresponding resistor 22 is arranged for each wafer to accurately control the current of each wafer, ensure the stable operation of the wafer, and prolong the service life of the wafer. Before passing through each wafer, the current is limited by the corresponding resistor 22 to adjust the power of each wafer, ensure that the wafer works in a suitable current range, and thus emits light with a corresponding brightness. In specific implementation, different resistance values of the resistor 22 can be selected according to the parameters of the wafer, and other current control methods can be used to achieve current limiting, such as using a constant current chip.

[0049] The above merely describes the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A light source assembly, characterized by The light cup has a mounting space inside, and a support is arranged in the mounting space and extends out of the mounting space at both ends, and at least three die bonding areas are arranged on the support at intervals, two of which are fixed with blue light chips, and the other is fixed with a green light chip, the blue light chips and the green light chip are electrically connected with the support through gold wires, and the light cup is covered with an excitation layer corresponding to the position of one of the blue light chips.

2. The light source assembly of claim 1, wherein, The light cup is provided with a first opening end communicating with the mounting space, and the first opening end is located above one of the blue light chips, and the excitation layer is mounted in the first opening end.

3. The light source assembly of claim 1, wherein, The excitation layer comprises nitride fluorescent powder.

4. The light source assembly of claim 2, wherein, The light cup is also provided with a second opening end communicating with the mounting space, and the second opening end is arranged at intervals with the first opening end, and the second opening end is located above the other blue light chip and green light chip, and the second opening end is mounted with a transparent silica gel layer.

5. The light source assembly of claim 4, wherein, The opening area of the second opening end is larger than that of the first opening end.

6. The light source assembly of claim 4, wherein, The first opening end and the second opening end have a partition wall therebetween.

7. The light source assembly of claim 4, wherein, The first opening end and the second opening end are both arc-shaped grooves.

8. An RGB light strip, characterized in that, The light source assembly comprises a circuit board and a plurality of light source assemblies arranged on the circuit board.

9. The RGB light strip of claim 8, wherein, A plurality of light source assemblies are arranged in series.

10. The RGB light strip of claim 9, wherein, The circuit board is provided with resistors, and the number of resistors corresponds to the number of chips on each light source assembly.

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