LED light-emitting unit and LED light source

Abstract

The utility model relates to an LED light-emitting unit and an LED light source, the LED light-emitting unit comprises a support and more than three light-emitting light sources installed on the support, and all the light-emitting light sources are light sources with more than three different colors. The support is provided with a light-emitting face and a backlight face which are oppositely arranged, and all the light-emitting light sources are arranged on the light-emitting face. Each light-emitting light source is connected with a corresponding positive electrode and a corresponding negative electrode, and the positive electrode and the negative electrode of each light-emitting light source are both arranged on the backlight face. The color effect of the LED light-emitting unit is richer, all the light-emitting light sources of the LED light-emitting unit are arranged on the light-emitting face of the support, and all the positive electrodes and the negative electrodes are arranged on the backlight face of the support, so that the LED light-emitting units can be assembled more compactly, the area of the LED light source can be reduced, and miniaturization development of the LED light source is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting equipment technical field, especially a kind of LED light-emitting unit and LED light source. BACKGROUND

[0002] In today's photography and video occasion, in order to get better imaging effect, people often use LED photography and video light as the auxiliary light source of photography and video. In order to adjust the light color, the LED photography and video light is installed with a variety of different color light emitting chips on its substrate, such as RGB three colors.

[0003] In order to facilitate installation, the market often encapsulates a variety of color light emitting chips on a bracket to form a light emitting unit, and then arranges a plurality of light emitting units on the substrate according to certain rules to constitute an LED light source. The light emitting chip and the substrate are connected by the electrode provided on the bracket to realize the circuit communication. However, due to the existing LED packaging structure, the electrode can only be stretched out from the outside of the bracket, resulting in a large spacing between the adjacent light emitting units on the substrate, so that the assembly of the plurality of light emitting units is not compact. Thus, the area of the LED light source is increased, which is not conducive to the miniaturization development of the LED light source. SUMMARY

[0004] One object of the utility model is to solve the deficiencies in the prior art and provide an LED light-emitting unit that can reduce the installation spacing between light emitting units and make the assembly more compact. To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] An LED light-emitting unit includes a bracket and three or more light emitting sources mounted on the bracket, and all light emitting sources are three or more different color light sources.

[0006] The bracket has a light emitting surface and a back surface arranged oppositely, and all light emitting sources are arranged on the light emitting surface. Each light emitting source is connected with a corresponding positive electrode and negative electrode, and the positive electrode and negative electrode of each light emitting source are arranged on the back surface.

[0007] In one embodiment, the positive electrode and negative electrode of each light emitting source are arranged protruding from the back surface.

[0008] In one embodiment, the bracket is made of ceramic material, and the horizontal cross section is rectangular.

[0009] The positive electrodes of all light emitting sources are distributed on the same side of the bracket, and the negative electrodes of all light emitting sources are distributed on the opposite side of the positive electrodes.

[0010] In one of the embodiments, the positive electrode of each light emitting source has a gap with the peripheral side edge of the support, and the negative electrode of each light emitting source has a gap with the peripheral side edge of the support.

[0011] In one of the embodiments, the LED light emitting unit further comprises a heat sink structure, which is arranged on the support and between the positive electrodes and the negative electrodes of all the light emitting sources, and the heat sink structure protrudes from the back surface.

[0012] In one of the embodiments, the light emitting sources of different colors are connected to different positive electrodes and negative electrodes respectively.

[0013] The light emitting sources of the same color are connected in series with each other and connected to the same positive electrode and the same negative electrode.

[0014] In one of the embodiments, the number of the light emitting sources is three, and the three light emitting sources are light sources of three different colors, and the three light emitting sources are arranged in a triangular shape or an L shape.

[0015] In one of the embodiments, the three light emitting sources are a red light source, a green light source and a blue light source respectively; or

[0016] The three light emitting sources are a warm light source, a cool light source and a neutral light source respectively.

[0017] In one of the embodiments, the number of the light emitting sources is four, and the four light emitting sources are arranged in a rectangular array.

[0018] The four light emitting sources are light sources of four different colors, or the four light emitting sources are light sources of three different colors.

[0019] In one of the embodiments, the four light emitting sources are two red light sources, a green light source and a blue light source respectively, and the two red light sources are arranged diagonally.

[0020] Alternatively, the four light emitting sources are a warm light source, a cool light source and two neutral light sources respectively, and the two neutral light sources are arranged diagonally.

[0021] Alternatively, the four light emitting sources are a red light source, a green light source, a blue light source and a white light source respectively.

[0022] Another purpose of the utility model is to provide a kind of LED light source, including substrate and the two above more than any one described LED light emitting unit of arrangement on substrate, the back surface of the support of each LED light emitting unit is connected with substrate, and the peripheral side surface of the support of any adjacent two LED light emitting units is arranged mutually close to each other;

[0023] The substrate is provided with a power supply circuit, and the positive and negative electrodes of all the light emitting sources of each LED light emitting unit are electrically connected with the power supply circuit.

[0024] In one of the embodiments, all the LED light emitting units arranged on the substrate are the same light emitting units.

[0025] In one of the embodiments, all the LED light emitting units arranged on the substrate include first light emitting units and second light emitting units, and the colors of the light sources in the first light emitting units and the second light emitting units are different from each other.

[0026] From the above technical solution, the utility model has at least the following advantages and positive effects:

[0027] In the utility model, the LED light emitting unit includes a support and three or more light emitting sources installed on the support, and all the light emitting sources are light sources of three or more different colors. The support has a light emitting surface and a backlight surface arranged oppositely, and all the light emitting sources are arranged on the light emitting surface. Each light emitting source is connected with a corresponding positive electrode and negative electrode, and the positive electrode and negative electrode of each light emitting source are arranged on the backlight surface.

[0028] By making the LED light emitting unit include light emitting sources of three or more different colors, the color effect of the LED light emitting unit can be enriched, and the application scenarios of the LED light emitting unit are expanded. By arranging all the light emitting sources on the light emitting surface of the support and arranging the positive electrodes and negative electrodes connected with the light emitting sources on the backlight surface of the support, the circumferential side surface position of the support can be not occupied. Therefore, when multiple LED light emitting units are installed on the substrate of the LED light source, the circumferential side surfaces of the supports of any two adjacent LED light emitting units can be closely arranged, so that the installation spacing between the LED light emitting units is greatly reduced, the multiple LED light emitting units can be more compactly assembled, and the area of the LED light source can be reduced, which is beneficial to the miniaturization development of the LED light source. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic view of the light emitting surface of the support of the LED light emitting unit of one embodiment of the utility model.

[0030] Figure 2 is Figure 1 a schematic view of the backlight surface of the support of the LED light emitting unit.

[0031] Figure 3 is a schematic view of the light emitting surface of the support of the LED light emitting unit of another embodiment of the utility model.

[0032] Figure 4 is Figure 3 a schematic view of the backlight surface of the support of the LED light emitting unit.

[0033] Figure 5 is a schematic diagram of a light emitting surface of a bracket of the LED light emitting unit according to another embodiment of the present application.

[0034] Figure 6 is Figure 5 a schematic diagram of a back light surface of the LED light emitting unit.

[0035] Figure 7 is Figure 3 a schematic diagram of an A-A cross section of the LED light emitting unit.

[0036] Figure 8 is Figure 3 a schematic diagram of a B-B cross section of the LED light emitting unit.

[0037] Figure 9 is a schematic diagram of a structure of the LED light source according to an embodiment of the present application.

[0038] The following is a list of reference numerals:

[0039] 10 - LED light emitting unit;

[0040] 100 - bracket;

[0041] 200 - light emitting source; 210 - red light source; 220 - green light source; 230 - blue light source; 240 - warm light source; 250 - cold light source; 260 - neutral light source; 270 - white light source;

[0042] 300 - positive electrode; 400 - negative electrode; 500 - heat sink structure;

[0043] 20 - LED light source; 21 - substrate; 22 - first light emitting unit; 23 - second light emitting unit. DETAILED DESCRIPTION

[0044] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can be varied in a wide range of embodiments, none of which depart from the scope of the present application, and that the description and drawings are to be considered as illustrative in nature, and not as restrictive to the present application.

[0045] In the description of the present application, it should be understood that the indication of direction or positional relationship (such as up, down, left, right, front and back, etc.) in the embodiments shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation. These indications are appropriate when the elements are in the positions shown in the drawings. If the position of these elements changes, the indications of these directions also change accordingly.

[0046] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0047] Referring to Figure 1 As shown, the LED light-emitting unit 10 according to the embodiment of the present application comprises a bracket 100 and three or more light-emitting light sources 200 mounted on the bracket 100, and all the light-emitting light sources 200 are light sources of three or more different colors.

[0048] As shown, in an embodiment, the number of light-emitting light sources 200 mounted on the bracket 100 is three, and the three light-emitting light sources 200 are light sources of three different colors. For example, the three light-emitting light sources 200 can be a red light source 210, a green light source 220 and a blue light source 230, respectively. Figure 1

[0049] It should be noted that in the present embodiment, the number of light-emitting light sources 200 mounted on the bracket 100 is three, and the three light-emitting light sources 200 are a red light source 210, a green light source 220 and a blue light source 230, respectively. However, the present application is not limited thereto, and in other embodiments, the light source colors of the three light-emitting light sources 200 can also be changed according to specific needs. For example, the three light-emitting light sources 200 can be a warm light source 240, a cool light source 250 and a neutral light source 260, respectively. Alternatively, the three light-emitting light sources 200 can be a red light source 210, a cool light source 250 and a blue light source 230, respectively. In other words, the three light-emitting light sources 200 can be any three different colors of light sources among different color light sources such as red light source 210, green light source 220, blue light source 230, warm light source 240, cool light source 250, neutral light source 260 and white light source 270.

[0050] Alternatively, referring to Figure 3 ​In another embodiment, the number of light emitting sources 200 mounted on the bracket 100 is four, and the four light emitting sources 200 can be light sources of three different colors, i.e., two light emitting sources 200 among the four light emitting sources 200 are of the same color. For example, the four light emitting sources 200 are two red light sources 210, one green light source 220, and one blue light source 230, respectively. Alternatively, the four light emitting sources 200 can be one warm light source 240, one cool light source 250, and two neutral light sources 260, respectively.

[0051] Of course, in other embodiments, as shown in FIG. 1C, the number of light emitting sources 200 mounted on the bracket 100 is four, and the four light emitting sources 200 can be light sources of four different colors. For example, the four light emitting sources 200 are one red light source 210, one green light source 220, one blue light source 230, and one white light source 270, respectively. Figure 5

[0052] It can be understood that in other embodiments, the colors of the four light emitting sources 200 can also be changed according to specific needs. That is, in the present application, the four light emitting sources 200 can be any three or four different colors of light sources among red light sources 210, green light sources 220, blue light sources 230, warm light sources 240, cool light sources 250, neutral light sources 260, and white light sources 270.

[0053] It can be understood that in other embodiments, the number of light emitting sources 200 mounted on the bracket 100 in each LED light emitting unit 10 can continue to increase, and the types of light source colors can continue to increase or not increase, which will not be described here. In other words, in the present application, the number of light sources and the types of light source colors in each LED light emitting unit 10 can be designed as needed, as long as the purpose of mounting multiple light emitting sources 200 on the bracket 100 is achieved, which are light sources of three or more different colors.

[0054] In the present application, by including three or more different colors of light emitting sources 200 in the LED light emitting unit 10, the user can select and enable each different color of light emitting source 200 according to their own preferences to achieve a variety of color effects, thereby enriching the color presentation style of the LED light emitting unit 10 and expanding the application scenarios of the LED light emitting unit 10.

[0055] ​It should be noted that in the present application, the red light source 210 is a light source capable of emitting red light, and its wavelength range can be 615nm-660nm. The green light source 220 is a light source capable of emitting green light, and its wavelength range can be 515nm-540nm. The blue light source 230 is a light source capable of emitting blue light, and its wavelength range can be 420nm-485nm. The warm light source 240 is a light source capable of emitting warm light such as amber light, and its wavelength range can be 580nm-600nm. The cold light source 250 is a light source capable of emitting cold light such as cyan light, and its wavelength range can be 485nm-515nm. The neutral light source 260 is a light source capable of emitting neutral light such as lemon yellow light, and its wavelength range can be 520nm-580nm. The white light source 270 is a light source capable of emitting white light, and its wavelength range can be 450nm-465nm.

[0056] It should be noted that in the present application, the red light source 210 can be a red light emitting chip, which can emit red light after being powered on. The green light source 220 can be a green light emitting chip, which can emit green light after being powered on. The blue light source 230 can be a blue light emitting chip, which can emit blue light after being powered on. The warm light source 240 can be a blue light emitting chip combined with corresponding phosphor, which can emit amber light. The cold light source 250 can be a cyan light emitting chip, which can emit cyan light after being powered on. The neutral light source 260 can be a blue light emitting chip combined with corresponding phosphor, which can emit lemon yellow light. The white light source 270 can be a blue light emitting chip combined with corresponding phosphor, which can emit white light.

[0057] It can be understood that in other embodiments, the red light source 210 can also be a non-red light emitting chip combined with corresponding phosphor, which can emit red light, and the green light source 220, the blue light source 230 and the cold light source 250 can also be so. In addition, the warm light source 240 can be a light source device composed of multiple chips, which can emit amber light after being powered on. Similarly, the neutral light source 260 can be a light source device composed of multiple chips, which can emit lemon yellow light after being powered on; the white light source 270 can be a light source device composed of multiple chips, which can emit white light after being powered on, which can be determined according to the specific circumstances.

[0058] It can be understood that in the present application, each light emitting source 200 includes a corresponding light emitting chip, and the light emitting chip of each light emitting source 200 is connected with corresponding positive and negative electrodes, so that when the positive and negative electrodes are respectively connected with the positive and negative electrodes of an external power supply, the light emitting chip can emit light to obtain a light emitting source 200 of a corresponding color.

[0059] As Figure 3 ,Figure 4 and Figure 7 As shown, the bracket 100 has a light-emitting surface and a backlight surface arranged opposite to each other, and all light-emitting sources 200 are disposed on the light-emitting surface. Specifically, the light-emitting chips of all light-emitting sources 200 are disposed on the light-emitting surface.

[0060] The bracket 100 may have a three-dimensional shape, with its light-emitting surface and backlight surface facing each other. The bracket 100 also has a circumferential outer side located between the light-emitting surface and the backlight surface.

[0061] See Figure 3 As shown, when the backlight surface of the bracket 100 faces vertically downwards, the horizontal cross-section of the bracket 100 is rectangular. Specifically, the horizontal cross-section of the bracket 100 is square. In this embodiment, by designing the bracket 100 as a rectangle, the bracket 100 has four straight outer sides in the circumference, which facilitates seamless splicing between adjacent brackets 100, allowing multiple LED light-emitting units 10 to be seamlessly assembled onto the substrate of the LED light source. It is understood that in other embodiments, the bracket 100 may also have other shapes, such as regular polygons, parallelograms, or semicircles, etc.

[0062] It should be noted that, in this application, the bracket 100 is preferably designed with at least one side of its circumference being flat, so that it can be spliced ​​with another bracket 100.

[0063] In the embodiments of this application, the bracket 100 may be made of ceramic material. Ceramic material has at least excellent insulation and high temperature resistance, thereby enabling the bracket 100 to reliably maintain the insulation between the electrodes of the LED light-emitting unit 10, maintain the structural stability of the LED light-emitting unit 10, and ensure the stable and safe operation of the LED light-emitting unit 10. Of course, it is understood that in other embodiments, the bracket 100 may also be made of metal or plastic material, depending on the specific circumstances.

[0064] like Figure 3 , Figure 4 and Figure 7 As shown, each light source 200 is connected to a corresponding positive electrode 300 and a negative electrode 400. Specifically, the light-emitting chip of each light source 200 is connected to a corresponding positive electrode 300 and a negative electrode 400. Furthermore, the positive electrode 300 and the negative electrode 400 of each light source 200 are disposed on the backlight surface.

[0065] In conventional technology, because the electrodes extend outward from the support, adjacent supports not only need to be spaced apart by two electrode thicknesses, but also require a certain safety distance between the two electrodes to prevent short circuits. Therefore, in conventional technology, the distance between the supports of two adjacent light-emitting units is relatively large.

[0066] In the embodiments of the present application, by arranging the plurality of light emitting sources 200 on the light emitting surface of the bracket 100, and arranging the positive electrode 300 and the negative electrode 400 connected to each of the light emitting sources 200 on the back surface of the bracket 100, the outer circumferential side surface position of the bracket 100 can be occupied. Since the positive electrode 300 and the negative electrode 400 connected to each of the light emitting sources 200 are arranged on the back surface of the bracket 100, the position and the safety distance of the two electrodes do not need to be spaced apart between the adjacent two brackets 100. Therefore, when the plurality of LED light emitting units 10 are mounted on the substrate 21 of the LED light source 20, the circumferential side surfaces of the brackets 100 of any two adjacent LED light emitting units 10 can be closely arranged, thereby greatly reducing the mounting distance between the LED light emitting units 10, so that the plurality of LED light emitting units 10 can be more compact, thereby reducing the area of the LED light source 20, and facilitating the miniaturization development of the LED light source 20.

[0067] Referring to Figure 1 In one embodiment, the number of the light emitting sources 200 mounted on the bracket 100 is three, and the three light emitting sources 200 can be distributed in an L shape on the light emitting surface of the bracket 100. Alternatively, in other embodiments, the three light emitting sources 200 can also be distributed in a triangular shape on the light emitting surface of the bracket 100.

[0068] In the present embodiment, the LED light emitting unit 10 includes three light emitting sources 200 distributed in a triangular shape or an L shape, and the distribution of each light source of the LED light emitting unit 10 is relatively regular and symmetrical, which can be beneficial to improve the light emitting uniformity and consistency of the LED light emitting unit 10.

[0069] Referring to Figure 3 In one embodiment, the number of the light emitting sources 200 mounted on the bracket 100 is four, and the four light emitting sources 200 are distributed in a rectangular array on the light emitting surface of the bracket 100. For example, the four light emitting sources 200 are two red light sources 210, one green light source 220 and one blue light source 230, which are distributed in a 2x2 matrix form. Among them, the two red light sources 210 are arranged diagonally. Alternatively, in other embodiments, the two red light sources 210 can also be distributed side by side.

[0070] In the present embodiment, the LED light emitting unit 10 includes four light emitting sources 200 distributed in a rectangular array, and the distribution of each light source 20 of the LED light emitting unit 10 is relatively regular and symmetrical, which can be beneficial to improve the light emitting uniformity and consistency of the LED light emitting unit 10.

[0071] In one embodiment, different colors of light emitting sources 200 are connected to different positive electrodes 300 and negative electrodes 400, respectively. The same color of light emitting sources 200 are connected in series to each other and to the same positive electrode 300 and the same negative electrode 400. For example, as shown in Figure 1 and Figure 2 three light emitting sources 200 are installed on the support 100, and the three light emitting sources 200 are one red light emitting source 210, one green light emitting source 220 and one blue light emitting source 230, the red light emitting source 210 is connected to one red light emitting source 210 positive electrode R+ and one red light emitting source 210 negative electrode R-. The green light emitting source 220 is connected to one green light emitting source 220 positive electrode G+ and one green light emitting source 220 negative electrode G-. The blue light emitting source 230 is connected to one blue light emitting source 230 positive electrode B+ and one blue light emitting source 230 negative electrode B-. The six electrodes, R+, R-, G+, G-, B+, B- are all arranged on the back surface of the support 100.

[0072] For another example, as shown in Figure 3 and Figure 4 four light emitting sources 200 are installed on the support 100, and the four light emitting sources 200 are two red light emitting sources 210, one green light emitting source 220 and one blue light emitting source 230, the two red light emitting sources 210 are connected in series and connected to the same red light emitting source 210 positive electrode R+ and the same red light emitting source 210 negative electrode R-. The green light emitting source 220 is connected to one green light emitting source 220 positive electrode G+ and one green light emitting source 220 negative electrode G-. The blue light emitting source 230 is connected to one blue light emitting source 230 positive electrode B+ and one blue light emitting source 230 negative electrode B-. The six electrodes, R+, R-, G+, G-, B+, B- are all arranged on the back surface of the support 100.

[0073] For another example, as shown in Figure 5 and Figure 6 four light emitting sources 200 are installed on the support 100, and the four light emitting sources 200 are one red light emitting source 210, one green light emitting source 220, one blue light emitting source 230 and one white light emitting source 270, the red light emitting source 210 is connected to one red light emitting source 210 positive electrode R+ and one red light emitting source 210 negative electrode R-. The green light emitting source 220 is connected to one green light emitting source 220 positive electrode G+ and one green light emitting source 220 negative electrode G-. The blue light emitting source 230 is connected to one blue light emitting source 230 positive electrode B+ and one blue light emitting source 230 negative electrode B-. The white light emitting source 270 is connected to one white light emitting source 270 positive electrode W+ and one white light emitting source 270 negative electrode W-. The eight electrodes, R+, R-, G+, G-, B+, B-, W+, W- are all arranged on the back surface of the support 100.

[0074] In the embodiment, by connecting the light emitting sources 200 of different colors to different positive electrodes 300 and negative electrodes 400 respectively, the independent control of the light emitting sources of different colors can be facilitated, so as to realize various different lighting effects of the LED light emitting unit 10. By connecting the light emitting sources 200 of the same color in series and connecting them to the same positive electrode 300 and the same negative electrode 400, the number of electrodes arranged on the support 100 can be effectively reduced, and the independent control of the light emitting sources of different colors can be reliably realized.

[0075] Referring to Figure 7 and Figure 8 In one embodiment, the positive electrode 300 and the negative electrode 400 of each light emitting source 200 are arranged protruding from the back surface. By arranging the positive electrode 300 and the negative electrode 400 to protrude from the back surface, when the LED light emitting unit 10 is mounted on the substrate 21 of the LED light source 20, the positive electrode 300 and the negative electrode 400 can be facilitated to better abut and contact the substrate 21, ensuring that the positive electrode 300 and the negative electrode 400 are reliably electrically connected with the circuit on the substrate 21, thereby facilitating to improve the operation stability of the LED light emitting unit 10.

[0076] Referring to Figure 6 In one embodiment, the positive electrodes 300 of all the light emitting sources 200 are distributed on the same side of the support 100, and the negative electrodes 400 of all the light emitting sources 200 are distributed on the opposite side of the positive electrodes 300.

[0077] Specifically, taking the support 100 as a rectangle for example, as shown in Figure 6 the support 100 has four peripheral side edges of upper side, lower side, left side and right side. The positive electrodes 300 of all the light emitting sources 200, such as R+, G+, B+ and W+ in the above, are distributed on the upper side edge of the back surface of the support 100, and the negative electrodes 400 of all the light emitting sources 200, such as R-, G-, B- and W- in the above, are distributed on the lower side edge of the back surface of the support 100.

[0078] In the embodiment, by arranging the positive electrodes 300 and the negative electrodes 400 of all the light emitting sources 200 on opposite sides of the support 100, the distribution of each electrode on the support 100 can be relatively regular and symmetrical, and the positive and negative poles of the external power source can be correspondingly connected to the multiple positive electrodes 300 and the multiple negative electrodes 400 on the two sides of the support 100, so that the circuit layout is simpler. Moreover, by such design, the multiple positive electrodes 300 and the multiple negative electrodes 400 on the support 100 are relatively spaced apart, the risk of short circuit between the electrodes is reduced, and the reliable operation of the LED light emitting unit 10 is ensured.

[0079] Referring to Figure 6In one embodiment, the positive electrode 300 of each light emitting source 200 has a gap with the circumferential side edge of the support 100. The negative electrode 400 of each light emitting source 200 has a gap with the circumferential side edge of the support 100.

[0080] Specifically, as shown in Figure 6 , the positive electrode 300 of each light emitting source 200, for example, the positive electrode R+ of the red light source 210 is distributed at the upper left corner of the back light surface of the support 100, and has a gap with the upper side edge and the left side edge of the support 100. For another example, the positive electrode B+ of the blue light source 230 is distributed at the upper side edge of the back light surface of the support 100, and has a gap with the upper side edge of the support 100.

[0081] As shown in Figure 6 , the negative electrode 400 of each light emitting source 200, for example, the negative electrode R- of the red light source 210 is distributed at the lower left corner of the back light surface of the support 100, and has a gap with the lower side edge and the left side edge of the support 100. For another example, the negative electrode B- of the blue light source 230 is distributed at the lower side edge of the back light surface of the support 100, and has a gap with the lower side edge of the support 100.

[0082] In the embodiment, by arranging the positive electrode 300 and the negative electrode 400 of each light emitting source 200 to have a gap with the circumferential side edge of the support 100, the electrodes between the adjacent two supports 100 can be prevented from being in contact and causing short circuit when the multiple supports 100 are installed in close proximity, thereby facilitating to ensure that the multiple LED light emitting units 10 are independent of each other and work stably and safely.

[0083] Referring to Figure 4 and Figure 6 , in one embodiment, the LED light emitting unit 10 further comprises a heat sink structure 500, which is arranged on the support 100 and between the positive electrodes 300 and the negative electrodes 400 of all the light emitting sources 200. The heat sink structure 500 can be made of high thermal conductivity material, such as copper, aluminum, etc. The heat sink structure 500 can be arranged on the back light surface of the support 100 and between the positive electrodes 300 and the negative electrodes 400 of all the light emitting sources 200.

[0084] In the embodiment, the heat sink structure 500 can quickly conduct the heat generated by the LED light emitting unit 10 to the substrate 21 and the surrounding environment when the LED light emitting unit 10 is working, thereby helping to prolong the service life of the LED light emitting unit 10 and ensuring the stable operation of the LED light emitting unit 10. Moreover, by arranging the heat sink structure 500 between the positive electrode 300 and the negative electrode 400 of all the light emitting sources 200, the heat sink structure 500 can be arranged in the space between the positive and negative electrodes on the back surface of the support 100, thereby facilitating the compact design and miniaturization development of the LED light emitting unit 10.

[0085] As shown in Figure 8 , the heat sink structure 500 is arranged protruding from the back surface. Therefore, when the LED light emitting unit 10 is mounted on the substrate 21 of the LED light source 20, the heat sink structure 500 can better abut the substrate 21 to quickly and reliably conduct heat to the substrate 21, thereby facilitating the heat dissipation effect of the LED light emitting unit 10 and improving the operation stability of the LED light emitting unit 10.

[0086] Referring to Figure 9 , the embodiment of the utility model also provides a LED light source 20, it includes substrate 21 and the two above-mentioned LED light emitting unit 10 of any embodiment of arrangement on substrate 21. Among them, the circumferential side of the support 100 of any adjacent two LED light emitting units 10 is arranged tightly. The substrate 21 is provided with power supply circuit, and the positive electrode 300 and the negative electrode 400 of all light emitting sources 200 of each LED light emitting unit 10 are electrically connected with the power supply circuit.

[0087] The LED light source 20 of the embodiment, all light emitting sources 200 of each LED light emitting unit 10 are arranged on the light emitting surface of the support 100, and the positive electrode 300 and the negative electrode 400 connected by all light emitting sources 200 are arranged on the back surface of the support 100, so that the position of the circumferential side of the support 100 is not occupied. Therefore, when multiple LED light emitting units 10 are mounted on the substrate 21, the circumferential side of the support 100 of any adjacent two LED light emitting units 10 can be arranged tightly, so that the mounting spacing between each LED light emitting unit 10 is reduced, and the multiple LED light emitting units 10 are assembled more compactly. Further, the area of the LED light source 20 can be set smaller, facilitating the miniaturization development of the LED light source 20.

[0088] Referring to Figure 9 , in one embodiment, all LED light emitting units 10 arranged on the substrate 21 include a first light emitting unit 22 and a second light emitting unit 23, and the light source colors in the first light emitting unit 22 and the second light emitting unit 23 are different.

[0089] It should be noted that in the embodiments of the present application, the number and arrangement of the light sources in the first light emitting unit 22 and the second light emitting unit 23 can be the same, and the difference between the two is only that the colors of the light sources are different from each other. For example, as shown in Figure 9 the first light emitting unit 22 can include two red light sources 210, one green light source 220 and one blue light source 230 arranged in a matrix. The second light emitting unit 23 can include one warm light source 240, one cool light source 250 and two neutral light sources 260 arranged in a matrix.

[0090] It should be noted that in the embodiments, the first light emitting unit 22 includes four light sources of three colors of red, green and blue, and the second light emitting unit 23 includes four light sources of three colors of warm, cool and neutral. However, the present application is not limited thereto, and in other embodiments, the number and color of the light sources included in the first light emitting unit 22 and the second light emitting unit 23 can be changed according to specific needs. For example, the first light emitting unit 22 can include three light sources, which are respectively a red light source 210, a cool light source 250 and a blue light source 230; the second light emitting unit 23 can include three light sources, which are respectively a warm light source 240, a green light source 220 and a neutral light source 260. Alternatively, the first light emitting unit 22 can include four light sources, which are respectively a red light source 210, a cool light source 250, a blue light source 230 and a white light source 270; the second light emitting unit 23 can include four light sources, which are respectively a warm light source 240, a green light source 220 and two neutral light sources 260.

[0091] In the embodiments, by making the number and arrangement of the light sources of all the LED light emitting units 10 arranged on the substrate 21 the same, the uniformity and consistency of the light emitted by the LED light source 20 can be improved. By making the colors of the light sources of the plurality of LED light emitting units 10 arranged on the substrate 21 different, the mutual interweaving and fusion of more different colors of light can be facilitated, thereby improving the light mixing effect of the LED light source 20 and improving the uniformity of the light emitted by the LED light source 20.

[0092] As shown in Figure 9 in an embodiment, the number of the first light emitting units 22 and the second light emitting units 23 arranged on the substrate 21 is equal. For example, the number of the first light emitting units 22 and the second light emitting units 23 is both two. The two first light emitting units 22 and the two second light emitting units 23 can be arranged in a matrix.

[0093] Of course, in other embodiments, the number of the first light emitting units 22 and the second light emitting units 23 arranged on the substrate 21 can also be unequal.

[0094] As shown in Figure 9As shown, the arrangement angles of the two first light emitting units 22 can be different, for example. Specifically, taking the center line of the two red light sources 210 in each first light emitting unit 22 as the reference line of the arrangement angle, the arrangement angles of the two first light emitting units 22 are different by 90°. Of course, in other embodiments, the arrangement angles of the two first light emitting units 22 can also be the same.

[0095] Similarly, the arrangement angles of the two second light emitting units 23 can be the same or different.

[0096] In embodiments not shown in the present application, all the LED light emitting units 10 arranged on the substrate 21 can also be the same light emitting units. Specifically, the same light emitting units refer to the same number of light sources, arrangement manner and light source color. For example, all the LED light emitting units 10 arranged on the substrate 21 can be the same as the first light emitting unit 22 shown in the present application, i.e., each LED light emitting unit 10 includes one red light source 210, one green light source 220 and one blue light source 230 arranged in an L shape. Figure 1 The LED light emitting units 10 shown in the present application, i.e., each LED light emitting unit 10 includes one red light source 210, one green light source 220 and one blue light source 230 arranged in an L shape.

[0097] For another example, all the LED light emitting units 10 arranged on the substrate 21 can be the same as the second light emitting unit 23 shown in the present application, i.e., each LED light emitting unit 10 includes two red light sources 210, one green light source 220 and one blue light source 230 arranged in a matrix. Figure 3 The LED light emitting units 10 shown in the present application, i.e., each LED light emitting unit 10 includes two red light sources 210, one green light source 220 and one blue light source 230 arranged in a matrix.

[0098] By making all the LED light emitting units 10 arranged on the substrate 21 the same light emitting units, the light emitting uniformity and consistency of the LED light source 20 can be improved.

[0099] It can be understood that in other embodiments, the number of light sources and arrangement manner of all the LED light emitting units 10 arranged on the substrate 21 can also be different. For example, some of the LED light emitting units 10 can include three light emitting sources 200 arranged in a triangular shape, and some of the LED light emitting units 10 can include four light emitting sources 200 arranged in a matrix, which can be determined as appropriate.

[0100] The LED light emitting unit and the LED light source of the embodiments of the present application, all the light emitting sources of each LED light emitting unit are arranged on the light emitting surface of the bracket, and the positive electrode and the negative electrode connected to all the light emitting sources are arranged on the back surface of the bracket, so that the circumferential side edge position of the bracket is not occupied. Therefore, when multiple LED light emitting units are installed on the substrate, the circumferential side edges of the brackets of any two adjacent LED light emitting units can be arranged closely, so that the installation spacing between each LED light emitting unit is reduced, and the multiple LED light emitting units are assembled more compactly. Further, the area of the LED light source can be set smaller, facilitating the miniaturization development of the LED light source.

[0101] The above embodiments are only illustrative of the structure, and the structures in the embodiments are not fixedly combined. In the absence of structural conflicts, the structures in the embodiments can be arbitrarily combined.

[0102] While the present application has been described with reference to several exemplary embodiments, it is understood that the words that have been used are words of description and illustration, rather than words of limitation. As the application can be embodied in many different forms without departing from the spirit or essential characteristics thereof, it is understood that the above described embodiments are not to limit the application as defined in the following claims. Therefore, the application is not to be limited by the above-described embodiments but is to be understood broadly within the scope of the appended claims and their equivalents.

Claims

1. An LED light emitting unit, characterized by, The bracket has oppositely arranged light-emitting surface and back surface, all the light-emitting light sources are arranged on the light-emitting surface, each of the light-emitting light sources is connected with corresponding positive electrode and negative electrode, and the positive electrode and the negative electrode of each of the light-emitting light sources are arranged on the back surface. The positive electrode and the negative electrode of each of the light-emitting light sources are arranged protruding from the back surface.

2. The LED light emitting unit of claim 1, wherein, The bracket is made of ceramic material, and its horizontal section is rectangular.

3. The LED lighting unit of claim 1, wherein, The positive electrodes of all the light-emitting light sources are distributed on the same side of the bracket, and the negative electrodes of all the light-emitting light sources are distributed on the opposite side of the positive electrodes. The positive electrode of each of the light-emitting light sources has a gap with the circumferential edge of the bracket, and the negative electrode of each of the light-emitting light sources has a gap with the circumferential edge of the bracket.

4. The LED light emitting unit of claim 3, wherein, A heat sink structure is arranged on the bracket between the positive electrodes and the negative electrodes of all the light-emitting light sources, and the heat sink structure is arranged protruding from the back surface.

5. The LED light emitting unit of claim 3, wherein, The light-emitting light sources of different colors are respectively connected to different positive electrodes and negative electrodes.

6. The LED lighting unit of claim 1, wherein, The light-emitting light sources of the same color are connected in series with each other and connected to the same positive electrode and the same negative electrode. The number of the light-emitting light sources is three, and the three light-emitting light sources are respectively light sources of three different colors, and the three light-emitting light sources are arranged in a triangular shape or an L shape.

7. The LED lighting unit of claim 1, wherein, The three light-emitting light sources are respectively a red light source, a green light source and a blue light source; or 8. The LED light emitting unit of claim 7, wherein, The three light-emitting light sources are respectively a warm light source, a cool light source and a neutral light source. The number of the light-emitting light sources is four, and the four light-emitting light sources are arranged in a rectangular array.

9. The LED lighting unit of claim 1, wherein, The four light-emitting light sources are respectively light sources of four different colors, or the four light-emitting light sources are respectively light sources of three different colors. The four light-emitting light sources are respectively two red light sources, a green light source and a blue light source, and the two red light sources are arranged diagonally.

10. The LED light emitting unit of claim 9, wherein, Or, the four light-emitting light sources are respectively a warm light source, a cool light source and two neutral light sources, and the two neutral light sources are arranged diagonally. Or, the four light-emitting light sources are respectively a red light source, a green light source, a blue light source and a white light source. The bracket has oppositely arranged light-emitting surface and back surface, all the light-emitting light sources are arranged on the light-emitting surface, each of the light-emitting light sources is connected with corresponding positive electrode and negative electrode, and the positive electrode and the negative electrode of each of the light-emitting light sources are arranged on the back surface.

11. An LED light source, characterized by The positive electrode and the negative electrode of each of the light-emitting light sources are arranged protruding from the back surface. The bracket is made of ceramic material, and its horizontal section is rectangular.

12. The LED light source of claim 11, wherein, The positive electrodes of all the light-emitting light sources are distributed on the same side of the bracket, and the negative electrodes of all the light-emitting light sources are distributed on the opposite side of the positive electrodes. The positive electrode of each of the light-emitting light sources has a gap with the circumferential edge of the bracket, and the negative electrode of each of the light-emitting light sources has a gap with the circumferential edge of the bracket. A heat sink structure is arranged on the bracket between the positive electrodes and the negative electrodes of all the light-emitting light sources, and the heat sink structure is arranged protruding from the back surface. The light-emitting light sources of different colors are respectively connected to different positive electrodes and negative electrodes. The light-emitting light sources of the same color are connected in series with each other and connected to the same positive electrode and the same negative electrode. The number of the light-emitting light sources is three, and the three light-emitting light sources are respectively light sources of three different colors, and the three light-emitting light sources are arranged in a triangular shape or an L shape. The three light-emitting light sources are respectively a red light source, a green light source and a blue light source; or The three light-emitting light sources are respectively a warm light source, a cool light source and a neutral light source. The number of the light-emitting light sources is four, and the four light-emitting light sources are arranged in a rectangular array. The four light-emitting light sources are respectively light sources of four different colors, or the four light-emitting light sources are respectively light sources of three different colors. The four light-emitting light sources are respectively two red light sources, a green light source and a blue light source, and the two red light sources are arranged diagonally. Or, the four light-emitting light sources are respectively a warm light source, a cool light source and two neutral light sources, and the two neutral light sources are arranged diagonally. Or, the four light-emitting light sources are respectively a red light source, a green light source, a blue light source and a white light source. The bracket has oppositely arranged light-emitting surface and back surface, all the light-emitting light sources are arranged on the light-emitting surface, each of the light-emitting light sources is connected with corresponding positive electrode and negative electrode, and the positive electrode and the negative electrode of each of the light-emitting light sources are arranged on the back surface. The positive electrode and the negative electrode of each of the light-emitting light sources are arranged protruding from the back surface. The bracket is made of ceramic material, and its horizontal section is rectangular. The positive electrodes of all the light-emitting light sources are distributed on the same side of the bracket, and the negative electrodes of all the light-emitting light sources are distributed on the opposite side of the positive electrodes. The positive electrode of each of the light-emitting light sources has a gap with the circumferential edge of the bracket, and the negative electrode of each of the light-emitting light sources has a gap with the circumferential edge of the bracket. A heat sink structure is arranged on the bracket between the positive electrodes and the negative electrodes of all the light-emitting light sources, and the heat sink structure is arranged protruding from the back surface. The light-emitting light sources of different colors are respectively connected to different positive electrodes and negative electrodes. The light-emitting light sources of the same color are connected in series with each other and connected to the same positive electrode and the same negative electrode. The number of the light-emitting light sources is three, and the three light-emitting light sources are respectively light sources of three different colors, and the three light-emitting light sources are arranged in a triangular shape or an L shape. The three light-emitting light sources are respectively a red light source, a green light source and a blue light source; or The three light-emitting light sources are respectively a warm light source, a cool light source and a neutral light source. The number of the light-emitting light sources is four, and the four light-emitting light sources are arranged in a rectangular array. The four light-emitting light sources are respectively light sources of four different colors, or the four light-emitting light sources are respectively light sources of three different colors. The four light-emitting light sources are respectively two red light sources, a green light source and a blue light source, and the two red light sources are arranged diagonally. Or, the four light-emitting light sources are respectively a warm light source, a cool light source and two neutral light sources, and the two neutral light sources are arranged diagonally. Or, the four light-emitting light sources are respectively a red light source, a green light source, a blue light source and a white light source. The bracket has oppositely arranged light-emitting surface and back surface, all the light-emitting light sources are arranged on the light-emitting surface, each of the light-emitting light sources is connected with corresponding positive electrode and negative electrode, and the positive electrode and the negative electrode of each of the light-emitting light sources are arranged on the back surface. The positive electrode and the negative electrode of each of the light-emitting light sources are arranged protruding from the back surface. The bracket is made of ceramic material, and its horizontal section is rectangular. The positive electrodes of all the light-emitting light sources are distributed on the same side of the bracket, and the negative electrodes of all the light-emitting light sources are distributed on the opposite side of the positive electrodes. The positive electrode of each of the light-emitting light sources has a gap with the circumferential edge of the bracket, and the negative electrode of each of the light-emitting light sources has a gap with the circumferential edge of the bracket. A heat sink structure is arranged on the bracket between the positive electrodes and the negative electrodes of all the light-emitting light sources, and the heat sink structure is arranged protruding from the back surface. The light-emitting light sources of different colors are respectively connected to different positive electrodes and negative electrodes. The light-emitting light sources of the same color are connected in series with each other and connected to the same positive electrode and the same negative electrode. The number of the light-emitting light sources is three, and the three light-emitting light sources are respectively light sources of three different colors, and the three light-emitting light sources are arranged in a triangular shape or an L shape. The three light-emitting light sources are respectively a red light source, a green light source and a blue light source; or 13. The LED light source of claim 11, wherein, All of the LED light emitting units arranged on the substrate include first light emitting units and second light emitting units, and the light source colors in the first light emitting units and the second light emitting units are different from each other.

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