Lamp with extended LED source for optimizing shadow rendering

Abstract

The present invention relates to a lamp with an extended LED source for optimizing shadow rendering, comprising lamp beads, a substrate, light-guiding columns, and a limiting sleeve, wherein the lamp beads are multi-color LED lamp beads. The plurality of lamp beads are arranged on the substrate in an orderly manner at intervals. In the present invention, according to the lamp with an extended LED source for optimizing shadow rendering, the light-guiding columns comprise light incident surfaces and light exit surfaces, the light incident surfaces of the plurality of light-guiding columns respectively abutting against the lamp beads, the light exit surfaces of the plurality of light-guiding columns being closely arranged and connected, and intervals being formed between the light exit surfaces; the limiting sleeve is formed with a plurality of first limiting holes, and the first limiting holes are respectively sleeved on the light-guiding columns between the light incident surfaces and the light exit surfaces, such that when the light exit surfaces have a regular geometrical shape, and the side length of the regular geometrical shape is a, and the distance of the intervals is d, the relationship d≤0.5a is satisfied, and the phenomenon of overlapping shadows with mixed lighting is ameliorated.

Description

A lamp for extending LED source to optimize shadow rendering TECHNICAL FIELD

[0001] The present application relates to the technical field of photographic lighting, and in particular to a lamp for extending LED source to optimize shadow rendering. BACKGROUND

[0002] Multi-color composite spectrum can bring better lighting experience to people. In the photography industry, it is very important to simulate realistic live effects by multi-color composite light. However, it is very difficult to mix multi-color light into a long aggregate light. The traditional way is to place the multi-color light source at the bottom of the light guide column, use the light guide column to reduce the angle of the light, and mix the color. However, the projection effect after mixing the color has obvious ghosting phenomenon.

[0003] In the prior art, patent number CN105445845A discloses an optical lens type light guide device of LED screen. The light guide device has a plurality of prismatic lens structures consistent with the number of LED lamps on the LED screen and a plurality of concave lens structures consistent with the number of LED lamps. The concave lens structure is used to cover the LED lamp outside the LED screen. The prismatic lens structure and the concave lens are respectively located on the opposite sides of the light guide device. The scheme uses the concave lens structure to disperse the LED light, and uses the prismatic lens structure to refract the dispersed light to form a plurality of LED lamp image bright areas on both sides of the LED lamp, so that the light of the LED lamp is more evenly diffused, thereby eliminating the problem of obvious non-emitting black area between pixels. At the same time, since a plurality of LED lamp image bright areas are formed, the spatial frequency of the original LED lamp is changed, the difference between the spatial frequency of the LED lamp image and the spatial frequency of the CCD is increased, and the moire phenomenon is eliminated. However, the scheme has deficiencies in solving the ghosting problem of mixed light projection.

[0004] Patent No. CN117894799A discloses an image sensing chip light source module architecture, comprising a carrier plate, a plurality of light emitting components, a plurality of light guide columns, a plurality of optical lenses and a fixing component, a plurality of the light emitting components are arranged in an array and distributed on the carrier plate, the carrier plate is a circuit board and is used for controlling a plurality of the light emitting components to emit light, the light emitting component is an LED lamp bead capable of generating four kinds of light and mixing light into a light source, the four kinds of light are blue-white light, blue-green light, green-white light and red-white light, the fixing component sequentially fixes the carrier plate, a plurality of light guide columns and optical lenses together, and makes the light emitting component correspond to the light guide column and the optical lens, thereby, the four kinds of light generated by the light emitting component is output after mixing light, the light is reflected and diffused multiple times by the light guide column to form a full-spectrum light source, and finally the light is refracted and output by the optical lens to form a uniformly distributed parallel light source. However, the scheme is to form a full-spectrum light source (i.e. mixed light) by multiple reflections and diffuse reflections of the light guide column, and then to output a uniformly distributed parallel light source by the optical lens, so that the complexity of the lamp structure is increased, and the structure redundancy is high.

[0005] Therefore, considering the convenience of actually using light projection, it is necessary to design a compact lamp to solve the projection ghosting problem of mixed color light. SUMMARY

[0006] The purpose of the present application is to provide a lamp for expanding LED source and optimizing shadow rendering, which aims to solve the projection ghosting problem of mixed color light.

[0007] To solve the above technical problems, a lamp for expanding LED source and optimizing shadow rendering is provided, comprising a lamp bead, a substrate, a light guide column and a limiting sleeve, the lamp bead is a multi-color LED lamp bead; the substrate is sequentially arranged with a plurality of lamp beads at intervals; the light guide column comprises an incident light surface and an exit light surface, the incident light surfaces of a plurality of light guide columns correspond to abut each lamp bead respectively, the exit light surfaces of a plurality of light guide columns are closely arranged and connected, and intervals are formed between each exit light surface; the limiting sleeve is formed with a plurality of first limiting holes, each first limiting hole is arranged between the incident light surface and the exit light surface of the light guide column.

[0008] Wherein, the exit light surface is defined as a regular geometric shape, the side length of the regular geometric shape is a, the width of the interval is d, and the relationship is satisfied: d≤0.5a.

[0009] Further, the distance d of the interval is ≤0.1a.

[0010] Further, the incident light surface is a regular hexagon, a square or a regular triangle, the geometric shape of the exit light surface is a regular triangle, a square or a regular hexagon, and the area of the incident light surface is smaller than the area of the exit light surface.

[0011] Further, the light-exiting surface is provided with a positioning protrusion, the lamp further comprises a limiting plate, the limiting plate is formed with a plurality of second limiting holes, the limiting plate is connected above the limiting sleeve, and the positioning protrusion is inserted into the second limiting hole.

[0012] Further, the lamp is provided with a projection curtain wall in front of the lamp, a projection object is arranged between the lamp and the projection curtain wall, the distance from the light-exiting surface to the projection object is denoted as l, the distance from the light-exiting surface to the projection curtain wall is denoted as L, the overlapping shadow interval left by the projection object on the projection curtain wall is denoted as t, and the overlapping shadow interval left by a single light-exiting surface on the projection curtain wall is denoted as T, and the following relationship is met:

[0013] ;

[0014] .

[0015] Further, t≤0.1T, and the following relationship is met:

[0016] d≤0.1a.

[0017] Further, the limiting sleeve is adjustably connected to the base plate, and when the distance between the limiting sleeve and the base plate changes, the width of the interval between the light-exiting surfaces changes.

[0018] Further, a light guide rib is formed between the light-entering surface and the light-exiting surface, a guide angle that is adapted to the light guide rib is formed at the corner of the first limiting hole, and the light guide rib moves along the guide angle.

[0019] Further, the light guide rib gradually widens from the light-entering surface to the light-exiting surface, and when the limiting sleeve gradually moves away from the base plate, the interval gradually decreases, and when the limiting sleeve gradually moves towards the base plate, the interval gradually increases.

[0020] Further, the lamp further comprises an elastic sleeve, and the elastic sleeve is connected between the limiting sleeve and the base plate.

[0021] The lamp with the extended LED source for optimizing shadow rendering according to the embodiment of the application has the following beneficial effects:

[0022] The lamp of the extended LED source optimizing shadow rendering in the embodiment can improve the phenomenon of mixed light projection existing ghosting, overcome the problems of uneven mixed light emission and serious ghosting in the prior art.

[0023] The lamp of the extended LED source optimizing shadow rendering in the embodiment can improve the phenomenon of mixed light projection existing ghosting, overcome the problems of uneven mixed light emission and serious ghosting in the prior art.

[0024] The lamp of the extended LED source optimizing shadow rendering in the embodiment can improve the phenomenon of mixed light projection existing ghosting, overcome the problems of uneven mixed light emission and serious ghosting in the prior art. ; , from which when t≤0.1T, the relationship d≤0.1a is satisfied, and the profile definition of the light projection of the light emitting surface of the light guide column is significantly improved.

[0025] The lamp of the extended LED source optimizing shadow rendering in the embodiment can improve the phenomenon of mixed light projection existing ghosting, overcome the problems of uneven mixed light emission and serious ghosting in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiment or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0027] Fig. 1 is a structural schematic diagram of a lamp according to an embodiment of the present application;

[0028] Fig. 2 is an exploded schematic diagram of the lamp according to an embodiment of the present application;

[0029] Fig. 3 is a structural schematic diagram of a limiting sleeve according to an embodiment of the present application;

[0030] Fig. 4 is a structural schematic diagram of a limiting plate according to an embodiment of the present application;

[0031] Fig. 5 is a structural schematic diagram of a lamp bead and a light guide column according to an embodiment of the present application;

[0032] Fig. 6 is a structural schematic diagram of the light guide column from a first perspective according to an embodiment of the present application;

[0033] Fig. 7 is a structural schematic diagram of the light guide column from a second perspective according to an embodiment of the present application;

[0034] Fig. 8 is a simplified schematic diagram of light projection of the light guide column according to an embodiment of the present application;

[0035] Fig. 9 is a partial enlarged view of A in Fig. 8;

[0036] Fig. 10 is a partial enlarged view of B in Fig. 8;

[0037] Fig. 11 is a light guide principle diagram of the light guide column according to an embodiment of the present application;

[0038] Fig. 12 is a luminance distribution diagram of a light exit surface according to an embodiment of the present application;

[0039] Fig. 13 is a light guide principle diagram of a light guide column in the prior art;

[0040] Fig. 14 is a luminance distribution diagram of a light exit surface in the prior art.

[0041] Wherein: 100, lamp; 110, lamp bead; 120, substrate; 130, light guide column; 131, light entrance surface; 132, light exit surface; 1321, positioning protrusion; 133, light guide rib; 140, limiting sleeve; 141, first limiting hole; 1411, guide angle; 150, limiting plate; 151, second limiting hole; 160, elastic sleeve; 200, projection object; 300, projection curtain wall. DETAILED DESCRIPTION

[0042] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0043] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are for purposes of description only and are not intended to be limiting.

[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for describing particular embodiments only and is not intended to be limiting. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0045] Please refer to FIG. 1-FIG. 14, the embodiment of the present application provides a lamp 100 for expanding LED source to optimize shadow rendering, including lamp beads 110, a substrate 120, light guide columns 130 and a limiting sleeve 140, the lamp beads 110 are multicolor LED lamp beads 110; the substrate 120 has a plurality of lamp beads 110 arranged in order at intervals; the light guide column 130 includes a light-in surface 131 and a light-out surface 132, the light-in surfaces 131 of the plurality of light guide columns 130 correspond to abut each lamp bead 110 respectively, the light-out surfaces 132 of the plurality of light guide columns 130 are closely arranged and connected, and intervals are formed between each light-out surface 132; the limiting sleeve 140 is formed with a plurality of first limiting holes 141, each first limiting hole 141 is respectively sleeved on the light guide column 130 between the light-in surface 131 and the light-out surface 132; wherein, the light-out surface 132 is defined as a regular geometric shape, the side length of the regular geometric shape is a, the width of the interval is d, and the relationship is satisfied: d≤0.5a. In specific applications, the lamp beads 110 can emit light of colors not limited to red, green and blue. Since the light guide column 130 includes a light-in surface 131 and a light-out surface 132, the light-in surfaces 131 of the plurality of light guide columns 130 correspond to abut each lamp bead 110 respectively, so that the mixed light emitted by the lamp beads 110 enters the light guide column 130 from the light-in surface 131, the light-out surfaces 132 of the plurality of light guide columns 130 are closely arranged and connected, and intervals are formed between each light-out surface 132, wherein the light-out brightness of each light-out surface 132 is uniform; the limiting sleeve 140 is formed with a plurality of first limiting holes 141, each first limiting hole 141 is respectively sleeved on the light guide column 130 between the light-in surface 131 and the light-out surface 132; so when the light-out surface 132 is a regular geometric shape, and the side length of the regular geometric shape is a, the interval distance is d, and the relationship is satisfied: d≤0.5a, since the interval distance d of the light-out surface 132 is less than or equal to 0.5a, the phenomenon of ghosting in mixed light projection can be improved, thereby solving the problems of uneven mixed light emission and serious ghosting.

[0046] In a possible implementation, the interval distance d is less than or equal to 0.1a. In specific applications, preferably, the interval distance d between adjacent light-emitting surfaces 132 is less than or equal to 0.1a, and the projected light of the lamp 100 has a clear and obvious profile.

[0047] In a possible implementation, the light-incident surface 131 is a regular hexagon, a square or a regular triangle, the light-emitting surface 132 is a regular triangle, a square or a regular hexagon, and the area of the light-incident surface 131 is less than the area of the light-emitting surface 132. In specific applications, the light-incident surface 131 and the light-emitting surface 132 are regular geometric shapes. For example, when the light-incident surface 131 is a regular hexagon, the light-emitting surface 132 is a regular triangle; when the light-incident surface 131 is a square, the light-emitting surface 132 is a square; and when the light-incident surface 131 is a regular triangle, the light-emitting surface 132 is a regular hexagon. Such combinations can facilitate the close and orderly arrangement of the light-emitting surfaces 132 and the design of the twisted light guide structure of the light guide column 130 to ensure uniform mixing of light.

[0048] In a possible implementation, the light-emitting surface 132 is provided with a positioning protrusion 1321, and the lamp 100 further includes a limiting plate 150, the limiting plate 150 is formed with a plurality of second limiting holes 151, the limiting plate 150 is connected above the limiting sleeve 140, and the positioning protrusion 1321 is inserted into the second limiting hole 151. In specific applications, since the light-emitting surface 132 is provided with the positioning protrusion 1321, the limiting plate 150 in the lamp 100 is formed with a plurality of second limiting holes 151, the limiting plate 150 is connected above the limiting sleeve 140, and the positioning protrusion 1321 is inserted into the second limiting hole 151, so as to fix the interval distance of the light-emitting surface 132 through the second limiting hole 151 of the limiting plate 150, and further stabilize the clarity of the projection of the lamp 100.

[0049] In a possible implementation, the lamp 100 is provided with a projection curtain wall 300 in front, the lamp 100 and the projection curtain wall 300 are spaced apart to form a projection object 200, the distance from the light-emitting surface 132 to the projection object 200 is l, the distance from the light-emitting surface 132 to the projection curtain wall 300 is L, the overlapping shadow interval left by the adjacent light-emitting surface 132 on the projection curtain wall 300 through one end of the projection object 200 is t, and the overlapping shadow interval left by a single light-emitting surface 132 on the projection curtain wall 300 through one end of the projection object 200 is T, and the following relationship is satisfied: ​In a specific application, the lamp 100 is provided with a projection curtain wall 300 in front of the lamp 100, and a projection object 200 is arranged between the lamp 100 and the projection curtain wall 300. The distance from the light emitting surface 132 to the projection object 200 is denoted as l, the distance from the light emitting surface 132 to the projection curtain wall 300 is denoted as L, the shadow interval left by the adjacent light emitting surface 132 on the projection curtain wall 300 through one end of the projection object 200 is denoted as t, and the shadow interval left by a single light emitting surface 132 on the projection curtain wall 300 through one end of the projection object 200 is denoted as T. The following relationship is satisfied: ; When t≤0.1T, the following relationship is satisfied: d≤0.1a, and the profile definition of the light emitting surface 132 of the light guide column 130 is significantly improved.

[0050] In a possible implementation, t≤0.1T, and the following relationship is satisfied: d≤0.1a. In a specific application, the interval between the light emitting surfaces 132 causes the shadow of the light passing through the projection object 200 to change sharply, and the shadow on the projection curtain wall 300 is jagged. When t≤0.1T, that is, d≤0.1a, the change of the shadow is not easily perceived by the human eye.

[0051] In a possible implementation, the limiting sleeve 140 is adjustably connected to the substrate 120. When the distance between the limiting sleeve 140 and the substrate 120 changes, the width of the interval between the light emitting surfaces 132 changes. In a specific application, the lamp bead 110 is first welded to the substrate 120, the distance between the limiting sleeve 140 and the substrate 120 is adjusted and fixed, then the light entering surface 131 of the light guide column 130 is inserted into the limiting sleeve 140 towards the first limiting hole 141, so that the light entering surface 131 abuts against the lamp bead 110, the interval between the light emitting surfaces 132 is constrained under the limitation of the first limiting hole 141, and finally the limiting plate 150 provided with the appropriate positioning protrusion 1321 is assembled on the light guide column 130.

[0052] In a possible implementation, the light guide edge 133 is formed between the light entering surface 131 and the light emitting surface 132, the corner of the first limiting hole 141 is formed with a guide angle 1411 matched with the light guide edge 133, and the light guide edge 133 moves along the guide angle 1411. In a specific application, when the limiting sleeve 140 moves relative to the light guide column 130, the light guide edge 133 moves relative to the first limiting hole 141. Since the corner of the first limiting hole 141 is formed with the guide angle 1411 matched with the light guide edge 133, on the one hand, the smoothness of the movement of the limiting sleeve 140 relative to the light guide column 130 is improved; on the other hand, the light guide edge 133 moves along the guide angle 1411 to contract or expand, so as to adjust the interval distance of the light emitting surface 132.

[0053] In a possible implementation, the light guide ribs 133 gradually widen from the light-in surface 131 to the light-out surface 132, and the spacing gradually decreases when the limiting sleeve 140 gradually moves away from the base plate 120, and the spacing gradually increases when the limiting sleeve 140 gradually moves close to the base plate 120. In a specific application, the limiting sleeve 140 is connected to the base plate 120 for adjustment, the light guide ribs 133 are formed between the light-in surface 131 and the light-out surface 132, the corner of the first limiting hole 141 is formed with a guide angle 1411 matched with the light guide ribs 133, the light guide ribs 133 move along the guide angle 1411, and the light guide ribs 133 gradually widen from the light-in surface 131 to the light-out surface 132, so that the spacing between the light-out surfaces 132 gradually decreases when the limiting sleeve 140 gradually moves away from the base plate 120, and the spacing between the light-out surfaces 132 gradually increases when the limiting sleeve 140 gradually moves close to the base plate 120, so that the lamp 100 can adjust the spacing of the light-out surfaces 132 to change the sharpness of the projection boundary according to the needs. It should be noted that the limiting sleeve 140 can move and adjust relative to the light guide ribs 133, so that the lamp 100 can be adjusted according to the use requirements of the light. For example, when the light needs to have a hazy effect, the limiting sleeve 140 is moved towards the base plate 120 to increase the spacing between the light-out surfaces 132, so that the sharpness of the projection boundary is reduced to improve the hazy light effect; when the light needs to have a clear boundary effect, the limiting sleeve 140 is moved away from the base plate 120 to decrease the spacing between the light-out surfaces 132, so that the sharpness of the projection boundary is increased to improve the boundary clarity effect, thereby improving the flexibility of the lamp 100.

[0054] In a possible implementation, the lamp 100 further includes an elastic sleeve 160 connected between the limiting sleeve 140 and the base plate 120. In a specific application, the elastic sleeve 160 is connected between the limiting sleeve 140 and the base plate 120, facilitating the adjustment of the spacing between the limiting sleeve 140 and the base plate 120, and the elastic sleeve 160 has dustproof, waterproof, and high-temperature-resistant properties.

[0055] The above-described embodiments only express several embodiments of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A luminaire that extends shadow rendering optimization for LED sources, characterized in that, The lamp comprises: a lamp bead, which is a multi-color LED lamp bead; a substrate, on which a plurality of lamp beads are arranged in order at intervals; a light guide column, which comprises an incident light surface and an exit light surface, the incident light surfaces of a plurality of light guide columns correspond to abut each lamp bead respectively, the exit light surfaces of a plurality of light guide columns are closely arranged and connected, and intervals are formed between each exit light surface; a limiting sleeve, which is formed with a plurality of first limiting holes, each first limiting hole is arranged on the light guide column between the incident light surface and the exit light surface; wherein the exit light surface is defined as a regular geometric shape, the side length of the regular geometric shape is a, and the width of the interval is d, which satisfies the relationship: d≤0.5a.

2. The luminaire of claim 1, wherein, The distance d of the interval is ≤0.1a.

3. The luminaire of claim 1, wherein, The incident light surface is a regular hexagon, a square or a regular triangle, the geometric shape of the exit light surface is a regular triangle, a square or a regular hexagon, and the area of the incident light surface is smaller than that of the exit light surface.

4. The luminaire of claim 3, wherein, The exit light surface is provided with a positioning protrusion, and the lamp further comprises a limiting plate, which is formed with a plurality of second limiting holes, the limiting plate is connected above the limiting sleeve, and the positioning protrusion is inserted into the second limiting hole.

5. The luminaire of any of claims 2-4, wherein, A projection curtain wall is arranged in front of the lamp, a projection object is arranged between the lamp and the projection curtain wall, the distance from the exit light surface to the projection object is l, the distance from the exit light surface to the projection curtain wall is L, the overlapping shadow interval left by the projection object end of adjacent exit light surfaces on the projection curtain wall is t, and the overlapping shadow interval left by the projection object end of a single exit light surface on the projection curtain wall is T, which satisfies the relationship: ； 。 6. The luminaire of claim 5, wherein, If t≤0.1T, then the relationship d≤0.1a is satisfied. The limiting sleeve is adjustably connected relative to the substrate, and when the distance between the limiting sleeve and the substrate changes, the width of the interval formed between the exit light surfaces changes.

7. The luminaire of claim 1, wherein, A light guide rib is formed between the incident light surface and the exit light surface, a guide angle adapted to the light guide rib is formed at the corner of the first limiting hole, and the light guide rib moves along the guide angle.

8. The luminaire of claim 7, wherein, The light guide rib gradually widens from the incident light surface to the exit light surface, and when the limiting sleeve gradually moves away from the substrate, the distance of the interval gradually decreases; when the limiting sleeve gradually moves closer to the substrate, the distance of the interval gradually increases.

9. The luminaire of claim 8, wherein, The lamp further comprises an elastic sleeve, which is connected between the limiting sleeve and the substrate.

10. The luminaire of claim 9, wherein, ​

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