LED light source

Abstract

The utility model provides an LED light source which comprises a light source plate and a light-emitting unit. The directions of the light-emitting units arranged in the first light-emitting area and the light-emitting units arranged in the second light-emitting area in the same row are different, so that the overlapping uniformity of light rays emitted by the first light-emitting area and the second light-emitting area can be ensured; the multiple columns of light-emitting units in the first light-emitting row group and the multiple columns of light-emitting units in the second light-emitting row group are arranged in a staggered mode, so that light rays of various colors in a lighting area are distributed more evenly. In two adjacent rows of light-emitting units in the first light-emitting row group and the second light-emitting row group, 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 the intersection position, so that chips with different light colors can be uniformly and dispersedly arranged; the light emitted by the light-emitting units can be uniformly overlapped and interwoven on a propagation path, and the mixing effect is effectively promoted, so that the light-emitting uniformity of the LED light source is ensured, and the light-emitting requirement of the photography and video recording lamp is efficiently met.

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 achieve the above object, the utility model provides a kind of LED light source, it includes:

[0007] Light source board, its surface is formed with the central axis passing through the light source board center, the surface of the light source board corresponds to the area of the central axis two sides is first light emitting area and second light emitting area respectively;

[0008] Light emitting unit is equipped with multiple, multiple light emitting units are arranged in the first light emitting area and second light emitting area of light source board in multiple rows and multiple columns array;Each light emitting unit includes red light optical element, green light optical element and blue light optical element arranged in a set manner, red light optical element, green light optical element and blue light optical element arranged in a set manner make that the light emitting unit forms set orientation;The orientation of all light emitting units in each row in the first light emitting area is same, the orientation of all light emitting units in each row in the second light emitting area is same, the orientation of light emitting unit arranged in first light emitting area and the orientation of light emitting unit arranged in second light emitting area in the same row are different;

[0009] The light source board comprises a plurality of rows of light emitting units, and the plurality of rows of light emitting units comprise a plurality of first light emitting row groups and a plurality of second light emitting row groups. Each of the first light emitting row groups and the second light emitting row groups comprises at least two rows of light emitting units that span the first light emitting area and the second light emitting area, and the first light emitting row groups and the second light emitting row groups are arranged alternately on the light source board. In each of the first light emitting row groups, a plurality of rows of light emitting units are arranged in longitudinal alignment in each column, and in each of the second light emitting row groups, a plurality of rows of light emitting units are arranged in longitudinal alignment in each column. In adjacent first light emitting row groups and second light emitting row groups, a plurality of columns of light emitting units in the first light emitting row groups are arranged in a staggered manner with a plurality of columns of light emitting units in the second light emitting row groups.

[0010] In any one of the first light emitting row groups, the orientations of the light emitting units in the Nth row in the first light emitting area are opposite to the orientations of the light emitting units in the N+1th row in the second light emitting area. In any one of the second light emitting row groups, the orientations of the light emitting units in the Mth row in the first light emitting area are opposite to the orientations of the light emitting units in the M+1th row in the second light emitting area.

[0011] In some embodiments of the present application, the orientations of the light emitting units arranged in the first light emitting area and the orientations of the light emitting units arranged in the second light emitting area in the same row of the first light emitting row groups are different, and the orientations of the light emitting units in adjacent two rows of the first light emitting row groups are different.

[0012] In some embodiments of the present application, the orientations of the light emitting units arranged in the first light emitting area and the orientations of the light emitting units arranged in the second light emitting area in the same row of the second light emitting row groups are different, and the orientations of the light emitting units in adjacent two rows of the second light emitting row groups are different.

[0013] 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.

[0014] 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.

[0015] In some embodiments of the present application, the green light light element and the blue light light element in adjacent light emitting units in adjacent two rows are arranged in a staggered manner.

[0016] In some embodiments of the present application, the LED light source further comprises a cool-warm light unit, the cool-warm light unit comprises a cool light light element or / and a warm light light element, and the cool-warm light unit is arranged on the light source plate and in the gap between two adjacent light emitting units.

[0017] In some embodiments of the present application, the first light emitting area and the second light emitting area are both provided with a plurality of cool-warm light units, and the cool-warm light units are arranged between two adjacent light emitting units in the same row and at the edge of the light source plate.

[0018] In some embodiments of the present application, the light emitting units and / or the cool-warm light units are arranged on the central axis, the direction of the light emitting unit arranged on the central axis is the same as the direction of the light emitting unit arranged in the first light emitting area in the same row, or the same as the direction of the light emitting unit arranged in the second light emitting area in the same row.

[0019] In some embodiments of the present application, in each light emitting unit, the red light light element, the green light light element and the blue light light element are packaged in the same shell.

[0020] According to the above technical solution, the LED light source of the present application has the following advantages: the LED light source of the present application comprises a light source plate and a light emitting unit, wherein the direction of the light emitting unit arranged in the first light emitting area in the same row is different from the direction of the light emitting unit arranged in the second light emitting area, which can ensure the uniformity of the light emitted by the first light emitting area and the second light emitting area; the multiple columns of light emitting units in the first light emitting row group and the multiple columns of light emitting units in the second light emitting row group are arranged in a staggered manner, which makes the distribution of light of various colors in the illumination area more uniform; and the direction of the light emitting unit located in the first light emitting area in the adjacent two rows of light emitting units in the first and second light emitting row groups is opposite to the direction of the light emitting unit located in the second light emitting area at the intersection position, which can uniformly and dispersedly arrange chips of different colors, so that the light emitting units in the first light emitting area and the second light emitting area and the light emitting units in different rows can uniformly superimpose and interweave in the propagation path, thereby effectively promoting the mixing effect and effectively ensuring the uniformity of the light emitted by the LED light source, and efficiently meeting the light emitting demand of the photography and videography lamp. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of an embodiment of the LED light source of the present application.

[0022] Figure 2 is Figure 1 is a structural schematic view of an example of the light emitting unit in the LED light source shown in the figure.

[0023] Figure 3 is Figure 1Structure schematic view of another example of the light emitting unit in the LED light source shown Figure 3 the light emitting unit of Figure 2 the light emitting unit of

[0024] Figure 4 is Figure 1 Structure schematic view of a partial area in the LED light source shown.

[0025] Figure 5 is Figure 1 Structure schematic view of a partial area in the LED light source shown.

[0026] Figure 6 Structure schematic view of another embodiment of the LED light source.

[0027] Figure 7 is Figure 6 Structure schematic view of a partial area in the LED light source shown.

[0028] Figure 8 is Figure 6 Structure schematic view of a partial area in the LED light source shown.

[0029] The following is the description of the signs: 100, LED light source; 10, light source plate; 101, central axis; 11, first light emitting area; 12, second light emitting area; 20, light emitting unit; 21, first light emitting row group; 22, second light emitting row group; 30, cold and warm light unit; 31, cold light light element; 32, warm light light element; 40, axis unit. DETAILED DESCRIPTION

[0030] 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 have various changes on different embodiments, which all do not deviate from the scope of the present application, and the description and drawings in essence are used for illustration, not for limiting the present application.

[0031] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indication of direction or position relationship (such as up, down, left, right, front and back, etc.) is only for the convenience of describing the present application and simplifying the description, not for indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the position shown in the drawings, these descriptions are appropriate. If the position of these elements changes, the indication of these directions also changes accordingly.

[0032] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise explicitly and specifically limited.

[0033] Referring to Figures 1 to 3 An embodiment of the present application provides an LED light source 100, which comprises a light source plate 10 and a light emitting unit 20 arranged on the light source plate 10.

[0034] Specifically, the surface of the light source plate 10 is formed with a central axis 101 passing through the center of the light source plate 10, and the surface of the light source plate 10 corresponds to the first light emitting area 11 and the second light emitting area 12 on both sides of the central axis 101. The light emitting unit 20 is provided in a plurality, and the plurality of light emitting units 20 are arranged in a multi-row and multi-column array in the first light emitting area 11 and the second light emitting area 12 of the light source plate 10. Each light emitting unit 20 comprises a red light light element (schematically shown as a red square in the figure), a green light light element (schematically shown as a green square in the figure) and a blue light light element (schematically shown as a dark blue square in the figure) arranged in a set manner, and the red light light element, the green light light element and the blue light light element arranged in the set manner make the light emitting unit 20 form a set direction. The direction of the plurality of light emitting units 20 in each row in the first light emitting area 11 is the same, the direction of the plurality of light emitting units 20 in each row in the second light emitting area 12 is the same, and the direction of the light emitting unit 20 arranged in the first light emitting area 11 and the direction of the light emitting unit 20 arranged in the second light emitting area 12 in the same row are different.

[0035] Among them, the plurality of light emitting units 20 on the light source plate 10 comprises a plurality of first light emitting row groups 21 and a plurality of second light emitting row groups 22, the first light emitting row group 21 and the second light emitting row group 22 each comprises at least two rows of light emitting units 20 across the first light emitting area 11 and the second light emitting area 12, and the first light emitting row group 21 and the second light emitting row group 22 are arranged alternately on the light source plate 10. The plurality of light emitting units 20 in the first light emitting row group 21 are arranged in longitudinal alignment on each column, and the plurality of light emitting units 20 in the second light emitting row group 22 are arranged in longitudinal alignment on each column; in the adjacent first light emitting row group 21 and the second light emitting row group 22, the plurality of light emitting units 20 of the first light emitting row group 21 and the plurality of light emitting units 20 of the second light emitting row group 22 are arranged in a staggered manner.

[0036] In any one of the first light emitting row groups 21, the orientations of the light emitting units 20 in the Nth row in the first light emitting area 11 are opposite to the orientations of the light emitting units 20 in the N+1th row in the second light emitting area 12; in any one of the second light emitting row groups 22, the orientations of the light emitting units 20 in the Mth row in the first light emitting area 11 are opposite to the orientations of the light emitting units 20 in the M+1th row in the second light emitting area 12.

[0037] For the LED light source 100 of the present application, the orientations of the multiple light emitting units 20 in each row in the first light emitting area 11 are the same, the orientations of the multiple light emitting units 20 in each row in the second light emitting area 12 are the same, and the orientations of the light emitting units 20 arranged in the first light emitting area 11 and the orientations of the light emitting units 20 arranged in the second light emitting area 12 in the same row are different, which can ensure the light illumination intensity of the LED light source 100 and also ensure the uniformity of the light emitted by the first light emitting area 11 and the second light emitting area 12; the multiple columns of light emitting units 20 in the first light emitting row groups 21 and the multiple columns of light emitting units 20 in the second light emitting row groups 22 are arranged in a staggered manner, so that the light emitting units 20 can be more uniformly distributed on the light source board 10, effectively utilize the space on the surface of the light source board 10, and make the light of various colors more uniformly distributed in the illumination area; and the orientations of the light emitting units 20 in the Nth row in the first light emitting area 11 and the orientations of the light emitting units 20 in the N+1th row in the second light emitting area 12 are opposite, and the orientations of the light emitting units 20 in the Mth row in the first light emitting area 11 and the orientations of the light emitting units 20 in the M+1th row in the second light emitting area 12 are opposite, which can uniformly and dispersedly arrange the chips of different colors, so that the light emitting units 20 in the first light emitting area 11 and the second light emitting area 12 and the light emitted by the light emitting units 20 in different rows can be uniformly superimposed and interwoven in the propagation path, effectively promoting the mixing effect, thereby effectively ensuring the uniformity of the light emitted by the LED light source 100 and efficiently meeting the light emission requirements of the photographic lighting lamp.

[0038] In some embodiments of the present application, the light source board 10 is used to carry and install the light emitting units 20 and can provide electrical connection and physical support for the light emitting units 20 to realize electrical connection conduction and fixed assembly of the light emitting units 20, thereby realizing the light emitting function of the LED light source 100.

[0039] The surface of the light source board 10 for installing the light emitting units 20 is formed with a central axis 101 passing through the center of the light source board 10, and the surface of the light source board 10 corresponding to the areas on both 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 board 10 is circular, and the central axis 101 passes through the center of the light source board 10. In other examples, the light source board 10 can also be square, polygonal, irregular, etc. according to the design requirements of the actual product.

[0040] Figure 1 The first light-emitting area 11 shown in the middle is the left area of the middle axis 101, and the second light-emitting area 12 is the right area of the middle axis 101. It should be noted that the left area is the first light-emitting area 11, and the right area is the second light-emitting area 12, which is only described according to the case shown in the figure, and not necessarily the specific left and right areas on the light source plate 10 in the present application. Figure 1

[0041] In some embodiments of the present application, the distance between any two adjacent light-emitting units 20 in the same row in the first light-emitting area 11 and the second light-emitting area 12 is equal.

[0042] Such arrangement is conducive to the uniform arrangement of the plurality of light-emitting units 20 on the light source plate 10, thereby realizing uniform light emission of the LED light source 100 as a whole. In other examples, according to the use requirements, the distance between any two adjacent light-emitting units 20 in the same row can also be set to be unequal, so as to form the required optical effect of the LED light source 100.

[0043] Each light-emitting unit 20 of the present application includes red light elements, green light elements and blue light elements arranged in a set manner. The red light elements can emit red light when powered on, the green light elements can emit green light when powered on, and the blue light elements can emit blue light when powered on. The red, green and blue light lines in the light-emitting unit 20 are mixed together to produce corresponding color and brightness effects.

[0044] Among them, the red light element can be composed of a red light chip, which can directly emit red light by powering on the red light chip; or it can be composed of a non-red light chip combined with a fluorescent powder, and the light emitted by the non-red light chip can emit red light after fluorescent excitation by the fluorescent powder. Similarly, the light emission of the green light element and the blue light element can also be designed according to the same principle.

[0045] Specifically, the red light element can emit light in a wavelength range of 615nm-660nm, the green light element can emit light in a wavelength range of 515nm-540nm, and the blue light element can emit light in a wavelength range of 420nm-485nm.

[0046] In some embodiments of the present application, the red light element, the green light element and the blue light element in each light-emitting unit 20 are uniformly packaged in a shell. During preparation, only the light-emitting units 20 are mounted on the light source plate 10 according to the corresponding arrangement. Such arrangement can make the production and assembly of the light-emitting unit 20 more convenient, and the overall structure more compact.

[0047] ​In some examples, the red light light element, the green light light element and the blue light light element of each light emitting unit 20 can be packaged respectively, and each has an independent shell. In this example, the LED light source 100 can be manufactured by mounting the red light light element, the green light light element and the blue light light element on the light source board 10 in a corresponding arrangement manner respectively and independently. This arrangement can facilitate the replacement and maintenance of the red light light element, the green light light element and the blue light light element, and is beneficial to the later use and maintenance of the LED light source 100.

[0048] Further, as shown in Figure 2 and Figure 3 , the red light light element, the green light light element and the blue light light element in the light emitting unit 20 are arranged in a triangular shape.

[0049] The arrangement of the red light light element, the green light light element and the blue light light element in the light emitting unit 20 in a triangular shape can more efficiently mix the light of the three colors during propagation, thereby achieving a more uniform light mixing effect, reducing the boundary feeling between colors, and making the overall light color more natural and uniform.

[0050] In addition, the triangular structure formed by the red light light element, the green light light element and the blue light light element has a certain stability, and the relative positions between the light elements are not easily changed when subjected to external impact or vibration, which helps to ensure the consistency and stability of the light emitting effect of the LED light source 100. In addition, this arrangement can reasonably arrange the light elements of the three colors in a relatively small space, improve the space utilization of the light source board 10, and make the design of the lamp or other light emitting equipment more compact.

[0051] In some other examples, the red light light element, the green light light element and the blue light light element in the light emitting unit 20 can also be arranged in other ways according to actual product requirements, such as a straight line arrangement in a straight line, an L-shaped arrangement, etc.

[0052] In some embodiments of the present application, as shown in Figure 1 , 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 20 is parallel to the central axis 101, 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, so as to realize the triangular arrangement of the red light light element, the green light light element and the blue light light element.

[0053] It can be understood that in other embodiments, the arrangement of the red light light element, the green light light element and the blue light light element in each light emitting unit 20 is not limited to Figure 1For example, the arrangement can be that the line connecting the center of the red light element and the center of the blue light element in each light emitting unit 20 is parallel to the central axis 101, and the green light element is arranged on one side of the line connecting the center of the red light element and the center of the blue light element; or the arrangement can be that the line connecting the center of the red light element and the center of the green light element in each light emitting unit 20 is parallel to the central axis 101, and the blue light element is arranged on one side of the line connecting the center of the red light element and the center of the green light element.

[0054] In addition, in some embodiments, the line connecting the centers of two of the three light elements in each light emitting unit 20 can be perpendicular to the central axis 101, and the other light element is arranged on one side of the line connecting the centers of the two light elements. That is, the arrangement of the red light element, the green light element and the blue light element 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.

[0055] In the present application, in each light emitting unit 20, the arrangement of the red light element, the green light element and the blue light element corresponds to the relative positions of the light elements in the triangle-shaped structure formed by the three light elements, and the direction of the light emitting unit 20 corresponds to the relative position relationship of the three light elements.

[0056] In combination Figure 2 and Figure 3 As shown, the triangle-shaped structure formed by the three light elements in the light emitting unit 20 is in the form of one port on the left side and two ports on the right side, or in the form of one port on the right side and two ports on the left side. Among them, Figure 2 Exemplified is the structure form of the light emitting unit 20 with one port on the left side, Figure 3 Exemplified is the structure form of the light emitting unit 20 with one port on the right side.

[0057] Specifically, Figure 2 As shown, in the light emitting unit 20, the red light element is at the position of the left one port in the triangle-shaped structure, and the green light element and the blue light element are respectively at the positions above and below the right two ports. Figure 3 As shown, in the light emitting unit 20, the red light element is at the position of the right one port in the triangle-shaped structure, and the blue light element and the green light element are respectively at the positions above and below the left two ports.

[0058] If Figure 2 As shown, the arrangement of the three light elements is the forward direction of the light emitting unit 20, Figure 3 As shown, the arrangement of the three light elements in the light emitting unit 20 is the reverse direction corresponding to Figure 2 As shown, the arrangement of the three light elements in the light emitting unit 20 is the reverse direction corresponding to Figure 2 As shown, the direction of the light emitting unit 20 is the reverse direction of Figure 3The orientations of the shown light emitting units 20 are opposite. And, Figure 3 The shown light emitting units 20 in opposite orientations can be obtained by rotating the shown light emitting units 20 in forward orientations by 180°. Figure 2 The shown light emitting units 20 in forward orientations are rotated by 180° to obtain the shown light emitting units 20 in opposite orientations. Figure 2 The orientations of the shown light emitting units 20 form an angle of 180°. Figure 3 The orientations of the shown light emitting units 20 form an angle of 180°.

[0059] It should be noted that, as shown in Figure 1 , the form of one mouth on the left side can be the forward orientation of the light emitting unit 20 (wherein the left side is relative to the other two light elements), and correspondingly, the form of one mouth on the right side can be the opposite orientation of the light emitting unit 20 (wherein the right side is relative to the other two light elements).

[0060] In addition, in some examples, the triangular structure formed by the three light elements in each light emitting unit 20 can be in the form of one mouth on the top and two mouths on the bottom. Among them, the red light element, the green light element and the blue light element can be arranged at the positions of the three mouths according to the light emitting requirements of the LED light source 100, so that the light emitting unit 20 has different orientations.

[0061] Further, in combination with Figure 1 , Figure 4 and Figure 5 (for the convenience of clear scheme, Figure 5 some light emitting units 20 in the figure are hidden and shown by the shaded part), the orientations of the multiple light emitting units 20 in each row in the first light emitting area 11 are the same, the orientations of the multiple light emitting units 20 in each row in the second light emitting area 12 are the same, and the orientations of the light emitting units 20 arranged in the first light emitting area 11 and the orientations of the light emitting units 20 arranged in the second light emitting area 12 in the same row are different.

[0062] Such a setting can on the one hand simplify the arrangement of light emitting units 20 with different orientations in the first light emitting area 11 and the second light emitting area 12, improve the manufacturing efficiency of the LED light source 100, and on the other hand can make the light emitted by the light emitting units 20 with different orientations in the first light emitting area 11 and the second light emitting area 12 superimposed and mixed in space, reduce the difference between light and dark in the illumination area, and make the light distribution more uniform.

[0063] In this application, the multiple rows of light emitting units 20 on the light source plate 10 include a plurality of first light emitting row groups 21 and a plurality of second light emitting row groups 22, the first light emitting row groups 21 and the second light emitting row groups 22 each include at least two rows of light emitting units 20, and the first light emitting row groups 21 and the second light emitting row groups 22 are arranged alternately on the light source plate 10.

[0064] In some examples, as shown in the accompanying drawings of the present application, the first light emitting row group 21 and the second light emitting row group 22 each include two rows of light emitting units 20. In other examples, the number of rows of light emitting units 20 in the first light emitting row group 21 and the second light emitting row group 22 can be set to three, four, or the like according to actual product requirements. In addition, the number of rows of light emitting units 20 in the first light emitting row group 21 and the number of rows of light emitting units 20 in the second light emitting row group 22 can be the same or different.

[0065] The multiple rows of light emitting units 20 in the first light emitting row group 21 are arranged in longitudinal alignment on each column, and the multiple rows of light emitting units 20 in the second light emitting row group 22 are arranged in longitudinal alignment on each column; in adjacent first light emitting row group 21 and second light emitting row group 22, the multiple columns of light emitting units 20 of the first light emitting row group 21 are arranged in an interleaved manner with the multiple columns of light emitting units 20 of the second light emitting row group 22.

[0066] The first light emitting row group 21 and the second light emitting row group 22 on the light source board 10 are arranged alternately, which can make the light emitted by the light emitting units 20 on the light source board 10 more evenly and widely scattered in space, which is helpful for the application of the LED light source 100 in a large space or a scene requiring large-area illumination, realizes more uniform overall illumination effect, reduces the dead angle and dark area of light; and in adjacent first light emitting row group 21 and second light emitting row group 22, the multiple columns of light emitting units 20 of the first light emitting row group 21 are arranged in an interleaved manner with the multiple columns of light emitting units 20 of the second light emitting row group 22, which can make the light emitted by the light emitting units 20 have more changes at different positions and angles, making the light more layered and stereoscopic. In addition, this interleaved arrangement can increase the arrangement density of the light emitting units 20 on the light source board 10, which is conducive to enhancing the brightness and clarity of the light.

[0067] The orientations of the light emitting units 20 arranged in the first light emitting area 11 and the orientations of the light emitting units 20 arranged in the second light emitting area 12 in the same row of the first light emitting row group 21 are different, and the orientations of the light emitting units 20 in adjacent two rows of the first light emitting row group 21 are different.

[0068] For the light emitting units 20 of the first light emitting row group 21, the orientations of the light emitting units 20 in adjacent two rows are different, which can change the interference and diffraction conditions of light, effectively eliminate the moire and other undesirable visual phenomena caused by light interference, and make the display or illumination effect more clear and stable; and the orientations of the light emitting units 20 arranged in the first light emitting area 11 and the orientations of the light emitting units 20 arranged in the second light emitting area 12 in the same row of the first light emitting row group 21 are different, which can make the light emitted by the light emitting units 20 in the first light emitting row group 21 on both sides of the central axis 101 superimposed and mixed in space, reduce the difference between light and dark in the illumination area, and make the light distribution more uniform.

[0069] In some embodiments of the present application, the orientations of the light emitting units 20 arranged in the same row of the second light emitting row group 22 in the first light emitting area 11 are different from the orientations of the light emitting units 20 arranged in the second light emitting area 12; the orientations of the light emitting units 20 in adjacent two rows of the second light emitting row group 22 are different.

[0070] For the light emitting units 20 in the second light emitting row group 22, the orientations of the light emitting units 20 in adjacent two rows are different, which can change the interference and diffraction conditions of the light rays, effectively eliminate the adverse visual phenomena such as moire caused by light ray interference, and make the display or lighting effect more clear and stable; and the orientations of the light emitting units 20 arranged in the same row of the second light emitting row group 22 in the second light emitting area 12 are different from the orientations of the light emitting units 20 arranged in the second light emitting area 12, which can make the light rays emitted by the light emitting units 20 in the second light emitting row group 22 on both sides of the central axis 101 superimposed and mixed in space, reduce the difference between light and shade in the lighting area, and make the light ray distribution more uniform.

[0071] On this basis, in combination with the staggered arrangement of the plurality of columns of light emitting units 20 of the first light emitting row group 21 and the plurality of columns of light emitting units 20 of the second light emitting row group 22, the coverage range of the light rays can be expanded, the lighting dead angle can be reduced, and the light rays in the entire lighting area can be more uniform.

[0072] In addition, on the light source board 10 of the present application, the green light elements and the blue light elements in the similar light emitting units 20 in adjacent two rows are arranged in a staggered manner.

[0073] The staggered arrangement of the green light elements and the blue light elements in the similar light emitting units 20 between adjacent rows enables the green light and the blue light to mix in a more complex manner during propagation. Compared with neat arrangement, the staggered arrangement increases the crossing and superimposition paths of the light rays, which is helpful to form more uniform and natural mixed light, and finally presents light rays with more soft and delicate colors, reducing color mutations and unevenness.

[0074] In addition, the staggered distribution of the green light elements and the blue light elements enables the light rays to be more uniformly distributed in space, avoiding color differences in the illumination area that may be caused by the concentrated distribution of certain light elements, and being conducive to realizing the uniformity of illumination.

[0075] Further, in some embodiments of the present application, the orientation of the light emitting units 20 in the Nth row of the first light emitting row group 21 is opposite to the orientation of the light emitting units 20 in the N+1th row arranged in the second light emitting area 12, and the orientation of the light emitting units 20 in the Mth row of the second light emitting row group 22 is opposite to the orientation of the light emitting units 20 in the M+1th row arranged in the second light emitting area 12.

[0076] For the example of the accompanying drawings of the present application, two rows of light emitting units 20 are included in the first light emitting row group 21 and the second light emitting row group 22, wherein the first row of the two adjacent rows of light emitting units 20 in the first light emitting row group 21 is located at the first light emitting area 11 in the direction of the light emitting units 20, and the second row is located at the second light emitting area 12 in the direction of the light emitting units 20. The first row of the two adjacent rows of light emitting units 20 in the second light emitting row group 22 is located at the first light emitting area 11 in the direction of the light emitting units 20, and the second row is located at the second light emitting area 12 in the direction of the light emitting units 20.

[0077] Such a setting enables the light emitted by the light emitting units 20 in the first light emitting row group 21 and the second light emitting row group 22 to be mixed in space at a larger angle and range, and different colors of light can be more fully superimposed, making the color of the light more uniform and natural, forming a more soft lighting effect, and reducing color deviation and unevenness in the light. In combination with the alternating arrangement of the first light emitting row group 21 and the second light emitting row group 22 on the light source plate 10, the coverage angle of the light can be effectively expanded, a wide-angle lighting effect can be achieved, and the entire area can be uniformly covered by light.

[0078] Further, in some embodiments of the present application, the LED light source 100 further comprises a cool and warm light unit 30, which comprises a cool light element 31 (a sky blue square in the drawings) or / and a warm light element 32 (a yellow square in the drawings). The first light emitting area 11 and the second light emitting area 12 are each provided with a plurality of cool and warm light units 30, and the adjacent two light emitting units 20 in the same row and the edge of the light source plate 10 are provided with cool and warm light units 30.

[0079] The warm light element 32 emits light with a warm color tone, and the color temperature is generally below 3000K. The cool light element 31 emits light with a cool color tone, and the color temperature is generally above 5000K. The cool light element 31 and the warm light element 32 each can comprise an LED chip and a fluorescent powder. The LED chip can be a blue LED chip, an ultraviolet LED chip, etc., and the fluorescent powder can be yellow fluorescent powder, red, green, and blue three-color fluorescent powder. Specifically, the fluorescent powder can be excited by the light emitted by the LED chip to produce warm white light or cool white light.

[0080] In some examples, as shown in FIG. 4, the cool and warm light unit 30 is arranged between the two adjacent light emitting units 20 in the same row. Figure 1As shown, the warm light light elements 32 are arranged between the adjacent two light emitting units 20 in the same row and at the edge of the light source plate 10. The arrangement of the warm light light elements 32 can improve the arrangement density of the light elements on the light source plate 10, and enhance the light brightness of the LED light source 100. In addition, the warm light light elements 32 can uniformly superimpose and interweave with the light emitted by the light emitting units 20 in the propagation path, so as to improve the light mixing effect and effectively enhance the light uniformity of the LED light source 100, and realize the application of the LED light source 100 in the warm light scene product.

[0081] In some examples, as shown in FIG. 2, the light source plate 10 can further be arranged with the cold light light elements 31 between the adjacent two light emitting units 20 in the same row and at the edge of the light source plate 10. Figure 6 As shown, the cold light light elements 31 are arranged between the adjacent two light emitting units 20 in the same row and at the edge of the light source plate 10. The arrangement of the cold light light elements 31 can improve the arrangement density of the light elements on the light source plate 10, and enhance the light brightness of the LED light source 100. In addition, the cold light light elements 31 can uniformly superimpose and interweave with the light emitted by the light emitting units 20 in the propagation path, so as to improve the light mixing effect and effectively enhance the light uniformity of the LED light source 100, and realize the application of the LED light source 100 in the cold light scene product.

[0082] In some examples, as shown in FIG. 2, the light source plate 10 can further be arranged with the cold light light elements 31 between the adjacent two light emitting units 20 in the same row and at the edge of the light source plate 10.

[0083] Further, in some embodiments of the present application, the light emitting units 20 and / or the cold and warm light units 30 can be arranged on the central axis 101. In combination with the above description of the light emitting units 20 and the cold and warm light units 30, the arrangement of the light emitting units 20 and the cold and warm light units 30 on the central axis 101 can improve the light uniformity of the LED light source 100. Figure 7 and Figure 8 (for the convenience of clear scheme, Figure 8 The middle part of the light emitting units 20 is hidden and shown by the shadow part), the light emitting units 20 and the cold and warm light units 30 are arranged on the central axis 101, and the cold and warm light units 30 include the cold light light elements 31.

[0084] The light emitting units 20 arranged on the central axis 101 are the axis units 40, the orientation of the axis units 40 is the same as the orientation of the light emitting units 20 arranged in the first light emitting area 11 in the same row, or the orientation of the axis units 40 is the same as the orientation of the light emitting units 20 arranged in the second light emitting area 12 in the same row.

[0085] The light emitted by the axis unit 40 can 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 on the propagation path, avoiding the situation that the light of a certain color is excessively concentrated on the light source plate 10, effectively promoting the mixing effect, thereby effectively ensuring the uniformity of the light emitted by the LED light source 100.

[0086] For the LED light source of the present application, the orientations of the plurality of light emitting units in each row in the first light emitting area are the same, the orientations of the plurality of light emitting units in each row in the second light emitting area are the same, and the orientations of the light emitting units arranged in the first light emitting area and the orientations of the light emitting units arranged in the second light emitting area in the same row are different, which can ensure the illumination brightness of the LED light source and also ensure the uniformity of the light emitted by the first light emitting area and the second light emitting area; the plurality of columns of light emitting units in the first light emitting row group and the plurality of columns of light emitting units in the second light emitting row group are arranged in a staggered manner, so that the light emitting units can be more uniformly distributed on the light source plate, effectively utilizing the space on the surface of the light source plate, and making the light of various colors more uniformly distributed in the illumination area; and the orientations of the light emitting units of the Nth row in the first light emitting area and the orientations of the light emitting units of the N+1th row in the second light emitting area are opposite, and the orientations of the light emitting units of the Mth row in the first light emitting area and the orientations of the light emitting units of the M+1th row in the second light emitting area are opposite, which can uniformly and dispersedly arrange the chips of different colors, so that the light emitting units in the first light emitting area and the second light emitting area and the light emitting units in different rows can uniformly superimpose and interweave on the propagation path, effectively promoting the mixing effect, thereby effectively ensuring the uniformity of the light emitted by the LED light source and efficiently meeting the light emission requirements of the photographic and video shooting lamp.

[0087] Although the present application has been described with reference to several exemplary embodiments, it will be understood that the terms used are intended to be illustrative and exemplary, and not restrictive. Since the present application can be embodied in many different forms without departing from the spirit or essential characteristics thereof, it should be understood that the above-described embodiments are not limited to any of the described details, but rather only by the spirit and scope of the appended claims, all changes and modifications that completely or partially come within the meaning and range of equivalents of the claims are therefore intended to be embraced therein.

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 comprises multiple units, which are arranged in a multi-row, multi-column array in the first and second light-emitting areas of the light source plate. Each light-emitting unit includes red, green, and blue light elements arranged in a predetermined manner, such that the light-emitting unit forms a predetermined orientation. 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. The orientations of the light-emitting units arranged in the first light-emitting area and the light-emitting units arranged in the second light-emitting area in the same row are different. The light-emitting units on the light source board include several first light-emitting row groups and several second light-emitting row groups. Each first light-emitting row group and each second light-emitting row group includes at least two rows of light-emitting units that span the first light-emitting area and the second light-emitting area. The first light-emitting row groups and the second light-emitting row groups are arranged alternately on the light source board. The multiple rows of light-emitting units in the first light-emitting row group are arranged vertically aligned in each column, and the multiple rows of light-emitting units in the second light-emitting row group are arranged vertically aligned in each column. In adjacent first light-emitting row groups and second light-emitting row groups, the multiple columns of light-emitting units in the first light-emitting row group and the multiple columns of light-emitting units in the second light-emitting row group are arranged in an alternating manner. In any group of the first light-emitting rows, the orientation of the light-emitting unit located in the Nth row of the first light-emitting area is opposite to the orientation of the light-emitting unit located in the N+1th row of the second light-emitting area; in any group of the second light-emitting rows, the orientation of the light-emitting unit located in the Mth row of the first light-emitting area is opposite to the orientation of the light-emitting unit located in the M+1th row of the second light-emitting area.

2. The LED light source according to claim 1, characterized in that, The orientation of the light-emitting units arranged in the first light-emitting area in the same row of the first light-emitting row group is different from that of the light-emitting units arranged in the second light-emitting area, and the orientation of the light-emitting units in two adjacent rows of the first light-emitting row group is different.

3. The LED light source according to claim 1, characterized in that, The orientation of the light-emitting units arranged in the first light-emitting area in the same row of the second light-emitting row group is different from that of the light-emitting units arranged in the second light-emitting area; the orientation of the light-emitting units in two adjacent rows of the second light-emitting row group is different.

4. 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.

5. The LED light source according to claim 4, characterized in that, The line connecting the center of the green light element and the center of the blue light element in each of the light-emitting units 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.

6. The LED light source according to claim 5, characterized in that, In adjacent rows of adjacent light-emitting units, the green light element and the blue light element are arranged in a staggered manner.

7. 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. The cold and warm light unit is disposed on the light source plate and in the gap between two adjacent light-emitting units.

8. The LED light source according to claim 7, characterized in that, Both the first light-emitting area and the second light-emitting area are provided with a plurality of warm and cool light units, and the warm and cool light units are provided between two adjacent light-emitting units in the same row and at the edge of the light source plate.

9. The LED light source according to claim 7, characterized in that, Light-emitting units and / or warm and cool light units are arranged on the central axis. The orientation of the light-emitting units arranged on the central axis is the same as the orientation of the light-emitting units arranged in the first light-emitting area that are parallel to the light-emitting unit, or the orientation of the light-emitting units arranged in the second light-emitting area that are parallel to the light-emitting unit.

10. The LED light source according to claim 1, 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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