LED light source

Abstract

The utility model provides an LED light source which comprises a light source plate and a light-emitting unit arranged on the light source plate. The orientations of the multiple light-emitting units in each row in the first light-emitting area on the light source plate are the same, and the orientations of the multiple light-emitting units in each row in the second light-emitting area are the same, so that the uniformity of light emitted by the first light-emitting area and the second light-emitting area can be ensured; in each row of light-emitting units, the orientation of the light-emitting units in the first light-emitting area is opposite to the orientation of the light-emitting units in the second light-emitting area which is symmetrical about the central axis, so that the color of light in the first light-emitting area and the color of light in the second light-emitting area can be uniformly blended; and the two adjacent rows of light-emitting units in the first light-emitting area are arranged in opposite directions, and the two adjacent rows of light-emitting units in the second light-emitting area are arranged in opposite directions, so that light rays emitted by the adjacent light-emitting units can be uniformly overlapped and interwoven on a propagation path, the light mixing effect is effectively promoted, and the light-emitting uniformity of the LED light source is effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a light emitting device technical field, especially a kind of 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.

[0003] In order to adjust the light color of light source, LED photography and video light usually has multiple different color light emitting chips on its substrate, such as RGB three colors. When multiple different color light emitting chips are emitted to the substrate, it is easy to cause uneven light color due to the arrangement of various color light emitting chips, such as the color of a part of the area is blue, and the color of another part of the area is red.

[0004] Therefore, how to arrange multiple color light emitting chips to improve the uniformity of light color is a major problem in the industry. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of LED light source, the arrangement design of different light color light emitting chip is to meet the high requirement of the uniformity of light color of photography and video light.

[0006] To solve the above technical problems, the utility model provides a kind of LED light source, it includes:

[0007] The surface of light source plate is formed with the central axis passing through the center of the light source plate, and the surface of the light source plate corresponds to the area on both sides of the central axis, which is a first light emitting area and a second light emitting area;

[0008] Multiple light emitting units are arranged in the first light emitting area and the second light emitting area of the light source plate in the form of multiple rows and multiple columns. Each light emitting unit includes a red light element, a green light element and a blue light element arranged in a set manner. The red light element, the green light element and the blue light element arranged in a set manner make the light emitting unit form a set direction.

[0009] Among them, the direction of all light emitting units in each row in the first light emitting area is the same, and the direction of all light emitting units in each row in the second light emitting area is the same. In each row of light emitting units, the direction of the light emitting unit in the first light emitting area is opposite to the direction of the light emitting unit in the second light emitting area at the position symmetrical about the central axis. The direction of the light emitting units in the adjacent two rows in the first light emitting area is opposite, and the direction of the light emitting units in the adjacent two rows in the second light emitting area is opposite.

[0010] The light emitting unit arranged at the center of the light source plate is a center unit, the orientation of the center unit forms a 90° included angle with the orientation of the light emitting unit in the same row and located in the first light emitting area, and the orientation of the center unit forms a 90° included angle with the orientation of the light emitting unit in the same row and located in the second light emitting area.

[0011] In some embodiments of the present application, all the light emitting units on the light source plate except the light emitting units in the same row as the center unit are arranged in longitudinal alignment on each column.

[0012] In some embodiments of the present application, the LED light source further comprises a cool and warm light unit, the cool and warm light unit comprises a cool light light element and / or a warm light light element; a plurality of the cool and warm light units are arranged on both sides of the center unit, and the plurality of the cool and warm light units are arranged at intervals along the extension direction of the central axis.

[0013] In some embodiments of the present application, the first light emitting area and the second light emitting area are each provided with a plurality of the cool and warm light units, and at least one cool and warm light unit is arranged at intervals on the outside of the light emitting unit.

[0014] In some embodiments of the present application, the plurality of light emitting units in the same row as the center unit and the center unit together form a center row group, and the light emitting units of the center row group are arranged staggered with the light emitting units of the adjacent rows thereof.

[0015] In some embodiments of the present application, the distance between any two adjacent light emitting units in the same row is equal.

[0016] In some embodiments of the present application, the red light light element, the green light light element and the blue light light element in the light emitting unit are arranged in a triangular shape.

[0017] In some embodiments of the present application, the line connecting the center of the green light light element and the center of the blue light light element in each light emitting unit is parallel or perpendicular to the central axis, and the red light light element is arranged on one side of the line connecting the center of the green light light element and the center of the blue light light element.

[0018] In some embodiments of the present application, for the light emitting units arranged in the first light emitting area and the second light emitting area, in any two adjacent rows of the light emitting units, the red light light element in the light emitting units of one row is arranged on the side of the line connecting the center of the green light light element and the center of the blue light light element close to the central axis, and the red light light element in the light emitting units of the other row is arranged on the side of the line connecting the center of the green light light element and the center of the blue light light element away from the central axis.

[0019] In some embodiments of this application, in each of the light-emitting units, the red light element, the green light element, and the blue light element are encapsulated in the same housing.

[0020] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: The LED light source of this utility model includes a light source board and light-emitting units disposed on the light source board. The multiple light-emitting units in each row of the first light-emitting area on the light source board have the same orientation, and the multiple light-emitting units in each row of the second light-emitting area have the same orientation, which can ensure the uniformity of the light emitted by the first light-emitting area and the second light-emitting area. Furthermore, in each row of light-emitting units, the orientation of the light-emitting units in the first light-emitting area is opposite to the orientation of the light-emitting units in the second light-emitting area at a position symmetrical about the central axis, which can make the color of the light in the first light-emitting area and the color of the light in the second light-emitting area harmonious and uniform. Combined with the opposite orientation of the light-emitting units in two adjacent rows in the first light-emitting area and the opposite orientation of the light-emitting units in two adjacent rows in the second light-emitting area, the light emitted by adjacent light-emitting units can be uniformly superimposed and interwoven on the propagation path, so as to effectively promote the light mixing effect and thus effectively ensure the uniformity of the LED light source. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the LED light source of this utility model.

[0022] Figure 2 yes Figure 1 A schematic diagram of an example of the structure of a light-emitting unit in an LED light source is shown.

[0023] Figure 3 yes Figure 1 A schematic diagram of another example of the structure of the light-emitting unit in the LED light source shown ( Figure 3 The orientation of the light-emitting unit and Figure 2 The light-emitting units are oriented in opposite directions.

[0024] Figure 4 This is a structural schematic diagram of another embodiment of the LED light source of this utility model.

[0025] The reference numerals in the attached diagram are explained as follows: 100, LED light source; 10, light source board; 101, central axis; 102, horizontal line; 11, first light-emitting area; 12, second light-emitting area; 20, light-emitting unit; 201, central unit; 202, central row group; 21, red light element; 22, green light element; 23, blue light element; 30, warm and cool light unit. Detailed Implementation

[0026] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0027] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] See Figure 1 One embodiment of this application provides an LED light source 100, which includes a light source board 10 and a light-emitting unit 20 disposed on the light source board 10.

[0030] Specifically, a central axis 101 passing through the center of the light source plate 10 is formed on the surface of the light source plate 10, and the areas on both sides of the central axis 101 on the surface of the light source plate 10 are the first light-emitting area 11 and the second light-emitting area 12, respectively. Multiple light-emitting units 20 are provided, and the multiple light-emitting units 20 are arranged in an array in the first light-emitting area 11 and the second light-emitting area 12 of the light source plate 10.

[0031] Each light-emitting unit 20 includes a red light element 21 (marked as R), a green light element 22 (marked as G), and a blue light element 23 (marked as B) arranged in a predetermined manner. The arrangement of the red light element 21, green light element 22, and blue light element 23 in the predetermined manner causes the light-emitting unit 20 to form a predetermined orientation.

[0032] In the first light-emitting area 11, the multiple light-emitting units 20 in each row have the same orientation, and in the second light-emitting area 12, the multiple light-emitting units 20 in each row have the same orientation. In each row of light-emitting units 20, the orientation of the light-emitting units 20 in the first light-emitting area 11 is opposite to the orientation of the light-emitting units 20 in the second light-emitting area 12, which is located symmetrically about the central axis 101. The light-emitting units 20 in two adjacent rows in the first light-emitting area 11 have opposite orientations, and the light-emitting units 20 in two adjacent rows in the second light-emitting area 12 have opposite orientations.

[0033] For the LED light source 100 of this application, the orientation of multiple light-emitting units 20 in each row of the first light-emitting area 11 is the same, and the orientation of multiple light-emitting units 20 in each row of the second light-emitting area 12 is the same. This arrangement ensures both illumination brightness and uniformity of light emitted from the first light-emitting area 11 and the second light-emitting area 12. Furthermore, in each row of light-emitting units 20, the orientation of the light-emitting units 20 in the first light-emitting area 11 is opposite to the orientation of the light-emitting units 20 in the second light-emitting area 12, which is symmetrical about the central axis 101. This allows for a harmonious and uniform color of light in the first light-emitting area 11 and the second light-emitting area 12. Combined with the opposite orientation of adjacent rows of light-emitting units 20 in the first light-emitting area 11 and the opposite orientation of adjacent rows of light-emitting units 20 in the second light-emitting area 12, chips of different colors can be evenly and dispersedly arranged, allowing the light emitted by adjacent light-emitting units 20 to be evenly superimposed and interwoven along the propagation path, effectively promoting a mixing effect. This effectively ensures the uniformity of light emission from the LED light source 100 and efficiently meets the lighting requirements of photographic and video lighting.

[0034] In this application, the light source board 10 is used to support the light-emitting unit 20 and can provide electrical connection and physical support for the light-emitting unit 20 to realize the electrical connection and fixed assembly of the light-emitting unit 20, thereby realizing the light-emitting function of the LED light source 100.

[0035] The surface of the light source plate 10, on which the light-emitting unit 20 is mounted, has a central axis 101 passing through the center of the light source plate 10. The areas on the surface of the light source plate 10 corresponding to the two sides of the central axis 101 are the first light-emitting area 11 and the second light-emitting area 12, respectively. In some examples, the light source plate 10 is circular, and the central axis 101 passes through the center of the light source plate 10.

[0036] Figure 1 The first luminous area 11 shown is the left-side region of the central axis 101, and the second luminous area 12 is the right-side region of the central axis 101. It should be noted that the left-side region being the first luminous area 11 and the right-side region being the second luminous area 12 is only based on… Figure 1 The situation shown is for illustrative purposes only. It is not necessary for specific left and right side areas on the light source board 10 in this application to be the first and second light-emitting areas (11, 12).

[0037] In this example, the surface of the light source plate 10 used to mount the light-emitting unit 20 is also formed with a horizontal line 102, which passes through the center of the light source plate 10 and is perpendicular to the central axis 101.

[0038] The light-emitting unit 20 of this application is provided in multiple ways, and the multiple light-emitting units 20 are arranged in an array in the first light-emitting area 11 and the second light-emitting area 12 of the light source plate 10.

[0039] In some embodiments, the spacing between any two adjacent light-emitting units 20 in the same row is equal. This arrangement facilitates the uniform arrangement of multiple light-emitting units 20 on the light source plate 10, thereby achieving uniform light emission of the LED light source 100 as a whole. In other examples, depending on the usage requirements, the spacing between any two adjacent light-emitting units 20 in the same row can also be set to be unequal, so that the LED light source 100 forms the desired optical effect.

[0040] Each light-emitting unit 20 includes a red light element 21, a green light element 22, and a blue light element 23 arranged in a predetermined manner. The red light element 21 emits red light when energized, the green light element 22 emits green light when energized, and the blue light element 23 emits blue light when energized. The red, green, and blue light rays in the light-emitting unit 20 are mixed together to produce corresponding color and brightness effects.

[0041] Among them, the red light element 21 can be composed of a red light chip, which can directly emit red light by energizing the red light chip; or it can be composed of a non-red light chip combined with phosphor, in which the light emitted by the non-red light chip can be emitted as red light after being excited by the phosphor. Similarly, the light emission of the green light element 22 and the blue light element 23 can also be designed based on the same principle.

[0042] Specifically, the emission wavelength range of the red light element 21 can be 615nm to 660nm, the emission wavelength range of the green light element 22 can be 515nm to 540nm, and the emission wavelength range of the blue light element 23 can be 420nm to 485nm.

[0043] In some embodiments of this application, the red light element 21, green light element 22, and blue light element 23 in each light-emitting unit 20 are uniformly encapsulated in a single housing. During fabrication, each light-emitting unit 20 simply needs to be mounted onto the light source board 10 according to its corresponding arrangement. This makes the production and assembly of the light-emitting unit 20 more convenient, and the overall structure more compact.

[0044] In other examples, the red light element 21, green light element 22, and blue light element 23 of each light-emitting unit 20 can be separately packaged, each with its own independent housing. During the manufacturing of the LED light source 100 of this application, the red light element 21, green light element 22, and blue light element 23 can be independently mounted on the light source board 10 according to their respective arrangements. This arrangement facilitates the replacement and maintenance of the red light element 21, green light element 22, and blue light element 23, thus benefiting the later use and maintenance of the LED light source 100.

[0045] In some embodiments of this application, the red light element 21, green light element 22 and blue light element 23 in the light-emitting unit 20 are arranged in a triangular pattern.

[0046] The triangular arrangement allows for more efficient mixing of the three colors of light during propagation, resulting in a more uniform light mixing effect, reduced color boundaries, and a more natural and harmonious overall light emission. Furthermore, the triangular structure formed by the red light element 21, green light element 22, and blue light element 23 provides stability; the relative positions of the chips are less likely to change when subjected to external impacts or vibrations, helping to ensure the consistency and stability of the LED light source 100's luminous effect. In addition, this arrangement allows for the efficient placement of the three colors of chips within a relatively small space, improving space utilization on the light source board 10 and enabling more compact designs for lamps or other light-emitting devices.

[0047] In other examples, the red light element 21, green light element 22, and blue light element 23 in the light-emitting unit 20 can also be arranged in other ways, such as in a straight line or in an L-shape.

[0048] In some embodiments of this application, such as Figure 1 As shown, the line connecting the center of the green light element 22 and the center of the blue light element 23 in each light-emitting unit 20 is parallel to the central axis 101. The red light element 21 is arranged on one side of the line connecting the center of the green light element 22 and the center of the blue light element 23, so that the red light element 21, the green light element 22 and the blue light element 23 are arranged in a triangular shape.

[0049] It is understood that, in other embodiments, the arrangement of the red light element 21, green light element 22, and blue light element 23 in each light-emitting unit 20 is not limited to... Figure 1The arrangement shown can be, for example, such that the line connecting the center of the red light element 21 and the center of the blue light element 23 in each light-emitting unit 20 is parallel to the central axis 101, and the green light element 22 is arranged on one side of the line connecting the center of the red light element 21 and the center of the blue light element 23; or, the line connecting the center of the red light element 21 and the center of the green light element 22 in each light-emitting unit 20 is parallel to the central axis 101, and the blue light element 23 is arranged on one side of the line connecting the center of the red light element 21 and the center of the green light element 22.

[0050] Furthermore, in some embodiments, in each light-emitting unit 20, the line connecting the centers of two of the three chips may be perpendicular to the central axis 101, and the third chip may be arranged on one side of the line connecting the centers of the two chips. That is, the arrangement of the red light element 21, the green light element 22, and the blue light element 23 in each light-emitting unit 20 can be changed in position according to specific needs to achieve the uniform light effect required by the product.

[0051] In this application, in each light-emitting unit 20, the arrangement of the red light element 21, the green light element 22 and the blue light element 23 corresponds to the relative position of each chip in the triangular structure formed by the three, and the orientation of the light-emitting unit 20 corresponds to the relative positional relationship of the three chips.

[0052] Combination Figure 2 As shown, in the light-emitting unit 20, the red light element 21 is located at the upper opening of the triangular structure, and the green light element 22 and the blue light element 23 are located at the lower two openings of the triangular structure, with the blue light element 23 on the left and the green light element 22 on the right.

[0053] like Figure 2 The three chips forming a triangular structure shown have one opening at the top, which corresponds to the forward orientation of the light-emitting unit 20. Figure 3 The three chips forming a triangular structure shown have one opening at the bottom that is the opposite direction of the light-emitting unit 20. Furthermore, Figure 3 The reverse-oriented light-emitting unit 20 shown can be made by Figure 2 The light-emitting unit 20, which is shown in the positive orientation, is rotated 180° to obtain the result. Figure 2 The orientation of the light-emitting unit 20 shown is the same as... Figure 3 The orientation of the light-emitting unit 20 shown forms a 180° angle.

[0054] It should be noted that, as Figure 1As shown, the three chips can also be arranged in a triangular structure with one opening on the left side, which is the forward orientation of the light-emitting unit 20 (where the left side is relative to the other two chips). Correspondingly, the three chips can be arranged in a triangular structure with one opening on the right side, which is the reverse orientation of the light-emitting unit 20 (where the right side is relative to the other two chips).

[0055] In some embodiments of this application, the light-emitting unit 20 disposed at the center of the light source plate 10 is a central unit 201. The central unit 201 is arranged on the horizontal line 102, and the central unit 201 and other multiple light-emitting units 20 arranged on the horizontal line 102 form the same row.

[0056] In this embodiment, the orientation of the central unit 201 forms a 90° angle with the orientation of the light-emitting unit 20 located in the first light-emitting area 11 in the same row, and the orientation of the central unit 201 forms a 90° angle with the orientation of the light-emitting unit 20 located in the second light-emitting area 12 in the same row.

[0057] This arrangement allows the light emitted by the central unit 201 to be uniformly superimposed and interwoven with the light emitted by the light-emitting unit 20 in the first light-emitting area 11 and the light emitted by the light-emitting unit 20 in the second light-emitting area 12 along the propagation path, avoiding the situation where a certain color of light is excessively concentrated in the central area of ​​the light source board 10, effectively promoting the mixing effect, and thus effectively ensuring the uniformity of light emission of the LED light source 100.

[0058] In some embodiments of this application, all light-emitting units 20 on the light source board 10, except for the light-emitting unit 20 that is in the same row as the central unit 201, that is, all light-emitting units 20 on the light source board 10 except for the light-emitting unit 20 arranged on the horizontal line 102, are arranged in a longitudinal alignment on each column.

[0059] This arrangement not only facilitates the fixed installation of the light-emitting unit 20 on the light source board 10, thereby effectively improving the manufacturing efficiency of the LED light source 100, but also facilitates the uniform arrangement of multiple light-emitting units 20 on the light source board 10, thus achieving uniform light emission of the LED light source 100 as a whole.

[0060] In addition, in some examples, multiple light-emitting units 20 in the same row as the central unit 201 together with the central unit 201 form a central row group 202, and the light-emitting units 20 in the central row group 202 are staggered with the light-emitting units 20 in the adjacent rows.

[0061] This arrangement enables the light emitted by the light-emitting unit 20 of the central row group 202 to be emitted and mixed evenly in all directions with the light emitted by the light-emitting unit 20 of its adjacent rows, so as to avoid the situation where a certain color of light is too concentrated in a local area of ​​the LED light source 100, and to ensure the effectiveness of uniform light mixing.

[0062] Furthermore, such as Figure 4 As shown in some embodiments of this application, the LED light source 100 further includes a warm and cool light unit 30, which includes a cool light element and / or a warm light element. The warm light element emits light with a warm hue, typically below 3000K. The cool light element emits light with a cool hue, typically above 5000K.

[0063] Both cold-light and warm-light optical elements can include LED chips and phosphors. The LED chip can be a blue LED chip, an ultraviolet LED chip, etc., and the phosphor can be yellow phosphor, red phosphor, green phosphor, or blue phosphor. Specifically, the phosphor can be excited by the light emitted from the LED chip to produce warm white light or cool white light.

[0064] In some examples, multiple warm and cool light units 30 are arranged on both sides of the central unit 201, and the multiple warm and cool light units 30 are arranged at intervals along the extension direction of the central axis 101.

[0065] The light emitted by the multiple warm and cold units arranged on the central axis 101 can be uniformly superimposed and interwoven with the light emitted by the light-emitting unit 20 in the first light-emitting area 11, the light emitted by the light-emitting unit 20 in the second light-emitting area 12, and the light emitted by the central unit 201 along the propagation path to improve the light mixing effect and effectively enhance the light emission uniformity of the LED light source 100.

[0066] In some embodiments of this application, both the first light-emitting area 11 and the second light-emitting area 12 are provided with a plurality of warm and cool light units 30, and at least one warm and cool light unit 30 is provided at intervals on the outer side of the light-emitting unit 20.

[0067] This configuration not only enables the rational use of the space on the upper surface of the light source board 10 and ensures the overall brightness of the LED light source 100, but also allows the light emitted by each light-emitting unit 20 to be superimposed with the warm and cool light emitted by the peripheral warm and cool light units 30, thereby effectively improving the light mixing effect and making the light emission color of the LED light source 100 more uniform.

[0068] The LED light source of this application includes a light source board and light-emitting units disposed on the light source board. Multiple light-emitting units in each row of the first light-emitting area on the light source board have the same orientation, and multiple light-emitting units in each row of the second light-emitting area also have the same orientation. This ensures both illumination brightness and uniformity of light emitted from the first and second light-emitting areas. Furthermore, in each row of light-emitting units, the orientation of the light-emitting units in the first light-emitting area is opposite to the orientation of the light-emitting units in the second light-emitting area, which is symmetrical about the central axis. This ensures a harmonious and uniform color of light in both the first and second light-emitting areas. Combined with the opposite orientations of adjacent rows of light-emitting units in the first and second light-emitting areas, chips of different colors are evenly and dispersedly arranged, allowing the light emitted by adjacent light-emitting units to be evenly superimposed and interwoven along the propagation path. This effectively promotes a mixing effect, thereby effectively ensuring the uniformity of LED light emission and efficiently meeting the lighting requirements of photographic and video lighting.

[0069] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An LED light source, characterized in that, include: A light source board has a central axis formed on its surface, passing through the center of the light source board. The areas on the surface of the light source board corresponding to the two sides of the central axis are respectively the first light-emitting area and the second light-emitting area. The light-emitting unit is provided in multiple rows and columns, and the multiple light-emitting units are arranged in a multi-row, multi-column array in the first light-emitting area and the second light-emitting area of ​​the light source plate; each light-emitting unit includes red light elements, green light elements and blue light elements arranged in a predetermined manner, and the red light elements, green light elements and blue light elements arranged in a predetermined manner cause the light-emitting unit to form a predetermined orientation; In this configuration, all light-emitting units in each row of the first light-emitting area have the same orientation, and all light-emitting units in each row of the second light-emitting area have the same orientation; in each row of light-emitting units, the orientation of the light-emitting units in the first light-emitting area is opposite to the orientation of the light-emitting units in the second light-emitting area at a position symmetrical about the central axis; the orientations of light-emitting units in two adjacent rows of the first light-emitting area are opposite, and the orientations of light-emitting units in two adjacent rows of the second light-emitting area are opposite. The light-emitting unit arranged at the center of the light source plate is the central unit. The orientation of the central unit forms a 90° angle with the orientation of the light-emitting unit located in the first light-emitting area in the same row, and the orientation of the central unit forms a 90° angle with the orientation of the light-emitting unit located in the second light-emitting area in the same row.

2. The LED light source according to claim 1, characterized in that, All light-emitting units on the light source board, except for the light-emitting unit that is in the same row as the central unit, are arranged vertically aligned in each column.

3. The LED light source according to claim 1, characterized in that, The LED light source also includes a cold and warm light unit, which includes a cold light element and / or a warm light element; multiple cold and warm light units are arranged on both sides of the central unit, and the multiple cold and warm light units are arranged at intervals along the extension direction of the central axis.

4. The LED light source according to claim 3, characterized in that, Both the first light-emitting area and the second light-emitting area are provided with a plurality of the aforementioned warm and cool light units, and at least one of the aforementioned warm and cool light units is provided at intervals on the outer side of each light-emitting unit.

5. The LED light source according to claim 1, characterized in that, The multiple light-emitting units that are parallel to the central unit together with the central unit form a central row group, and the light-emitting units in the central row group are staggered with the light-emitting units in the adjacent rows.

6. The LED light source according to claim 1, characterized in that, The spacing between any two adjacent light-emitting units in the same row is equal.

7. The LED light source according to claim 1, characterized in that, The red, green, and blue light elements in the light-emitting unit are arranged in a triangular pattern.

8. The LED light source according to claim 7, characterized in that, In each of the light-emitting units, the line connecting the center of the green light element and the center of the blue light element is parallel or perpendicular to the central axis, and the red light element is arranged on one side of the line connecting the center of the green light element and the center of the blue light element.

9. The LED light source according to claim 8, characterized in that, For the light-emitting units arranged in the first light-emitting area and the second light-emitting area, in any two adjacent rows of light-emitting units, the red light element in one row of light-emitting units is arranged on the side of the line connecting the center of the green light element and the center of the blue light element close to the central axis, and the red light element in the other row of light-emitting units is arranged on the side of the line connecting the center of the green light element and the center of the blue light element away from the central axis.

10. The LED light source according to claim 8, characterized in that, In each of the light-emitting units, the red light element, the green light element, and the blue light element are encapsulated in the same housing.

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