Laminated LED light-emitting module, lighting lamp and preparation method

Abstract

The invention discloses a laminated LED light-emitting module, a lighting lamp and a preparation method. The laminated LED light-emitting module comprises a plurality of substrates which are arranged in a laminated mode, one of the substrates is provided with a first area, the other substrate is provided with an annular area, LED lamp beads are arranged in the first area, and each annular area is provided with a plurality of LED lamp beads; the orthographic projection inner contours, on the horizontal plane, of the annular areas on the base plate provided with the annular areas are gradually enlarged from inside to outside, and the annular areas are sequentially arranged in a sleeving mode. The orthographic projection of the first area on the horizontal plane on the substrate provided with the first area is located in the orthographic projection of the annular area on the innermost side of the orthographic projection of the annular area on the horizontal plane on the substrate provided with the annular area. According to the technical scheme, light beam conversion of the lighting lamp can be achieved through one LED module, the cost of the lighting lamp is reduced, and meanwhile the size and the weight are reduced.

Description

Technical Field

[0001] The present invention relates to the field of mobile lighting technology, and in particular to a stacked LED light-emitting module, a lighting fixture and a preparation method thereof. Background Art

[0002] In mobile lighting, in order to meet more lighting needs, lighting fixtures are often capable of light beam transformation, that is, different light beams are switched to meet different lighting needs.

[0003] Currently, when performing light beam transformation in a lighting fixture, one method is to enable the distance between the lens and the light source in the lighting fixture to be changed, and when performing light beam transformation, the light beam transformation is achieved by changing the distance between the lens and the light source in the lighting fixture; another method is to set a plurality of LED light sources at different positions on the same focal plane in the light source, and when performing light beam transformation, the light beam transformation is achieved by driving the LED light sources at different positions on the same focal plane; in the above two methods, although light beam transformation can be performed, the structure is complicated, which makes the cost of the lighting fixture high, and the volume and weight of the lighting fixture large.

[0004] Therefore, the prior art still needs to be improved and developed. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a stacked LED light-emitting module, a lighting fixture and a preparation method, so as to solve the problem that the light beam transformation method used in the prior art for performing light beam transformation in lighting fixtures is complex in structure, resulting in high cost of the lighting fixture and large volume and weight of the lighting fixture.

[0006] The technical solution adopted by the present invention to solve the technical problem is: to provide a stacked LED light-emitting module, including: a plurality of stacked substrates, one of the plurality of substrates is provided with a first area, the other substrate is provided with an annular area, the first area is provided with LED lamp beads, and each annular area is provided with a plurality of LED lamp beads;

[0007] Among them, in the orthographic projections of several of the substrates on the horizontal plane, the inner contour of the orthographic projection of the annular area on the substrate provided with the annular area on the horizontal plane gradually increases from the inside to the outside and is arranged in sequence, the orthographic projection of the first area on the substrate provided with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate provided with the annular area on the horizontal plane, and the light beam emitted when the LED lamp bead on any substrate is lit is not blocked by the other substrate, so that when the LED lamp bead on any substrate is lit, a corresponding light beam is emitted at an angle.

[0008] According to a further configuration of the present invention, the substrate provided with the first area is located on top of several stacked substrates. When the substrate provided with the first area is located on top of several stacked substrates, the outer contours of the several substrates gradually decrease from bottom to top, and the substrate provided with the first area is located within an annular area of ​​an adjacent substrate. In two upper and lower adjacent substrates provided with annular areas, the substrate at the upper adjacent position is located within the annular area of ​​the substrate at the lower adjacent position.

[0009] The present invention is further configured such that the substrate provided with the first area is located at the bottom of several stacked substrates. When the substrate provided with the first area is located at the bottom of several stacked substrates, each substrate provided with the annular area is provided with a first through hole that penetrates the upper surface and the lower surface of the substrate, the first through hole is located in the annular area of ​​the substrate, the first area on the substrate provided with the first area is projected on the adjacent substrate to be located within the first through hole on the adjacent substrate, when there are several substrates provided with the first through hole, the inner contours of the first through holes on the several substrates provided with the first through holes gradually increase from bottom to top, and the projections of the first through holes on the plane of the several substrates provided with the first through holes are nested in sequence, wherein, in two substrates provided with the first through holes that are adjacent to each other in upper and lower positions, the projection of the annular area on the substrate at the next adjacent position on the substrate at the previous adjacent position is located within the first through hole on the substrate at the previous adjacent position, and the projection of the first area on the substrate provided with the first area on the adjacent substrate is located within the first through hole on the adjacent substrate.

[0010] According to a further configuration of the present invention, heat-conducting glue is filled between the upper and lower adjacent substrates, or reflow soldering is used to weld the upper and lower adjacent substrates.

[0011] According to a further configuration of the present invention, the distance between any two adjacent LED lamp beads along the clockwise direction or the counterclockwise direction among the plurality of LED lamp beads on the substrate provided with the annular area is equal.

[0012] According to a further configuration of the present invention, both the LED lamp beads in the first area and the LED lamp beads in the annular area are white light LED lamp beads, wherein the power of the LED lamp beads in the first area is greater than the power of the LED lamp beads in any annular area.

[0013] In a further configuration of the present invention, the electrode on the substrate provided with the first region is provided at any position outside the first region on the substrate;

[0014] The electrode on the substrate provided with the annular region is provided at any position outside the annular region on the substrate.

[0015] According to a further configuration of the present invention, when the substrate provided with the first area is located at the bottom of a plurality of the substrates, the outer contours of the plurality of the substrates gradually increase from bottom to top.

[0016] The present invention further provides a lighting fixture, comprising the stacked LED light-emitting module as described above.

[0017] The present invention also provides a method for preparing the stacked LED light-emitting module as described above, the method comprising:

[0018] Providing a plurality of substrates, wherein one of the plurality of substrates is provided with a first region, and another substrate is provided with a ring region;

[0019] An LED lamp bead is arranged in the first area on the substrate where the first area is arranged;

[0020] A plurality of LED lamp beads are arranged on the annular area on the substrate provided with the annular area;

[0021] The substrate with LED lamp beads arranged in the first area and the substrate with LED lamp beads arranged on the annular area are stacked, wherein, in the orthographic projections of several substrates on the horizontal plane, the inner contour of the orthographic projection of the annular area on the substrate with the annular area on the horizontal plane gradually increases from the inside to the outside and are arranged in sequence, the orthographic projection of the first area on the substrate with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate with the annular area on the horizontal plane, and the light beam emitted when the LED lamp beads on any substrate are lit is not blocked by the other substrate, so that when the LED lamp beads on any substrate are lit, a corresponding light beam is emitted at an angle.

[0022] Beneficial effects:

[0023] The present invention provides a stacked LED light-emitting module, a lighting fixture and a preparation method. The stacked LED light-emitting module comprises: a plurality of stacked substrates, one of the plurality of substrates is provided with a first area, the other substrate is provided with an annular area, LED lamp beads are provided in the first area, and a plurality of LED lamp beads are provided in each annular area; wherein, in the orthographic projections of the plurality of substrates on a horizontal plane, the inner contour of the orthographic projections of the annular areas on the substrates provided with the annular areas on the horizontal plane gradually increases from the inside to the outside and are arranged in sequence, the orthographic projections of the first areas on the substrates provided with the first areas on the horizontal plane are located within the orthographic projections of the innermost annular areas of the orthographic projections of the annular areas on the substrates provided with the annular areas on the horizontal plane, and the light beam emitted when the LED lamp beads on any substrate are lit is not blocked by another substrate, so that when the LED lamp beads on any substrate are lit, a corresponding light beam is emitted at an angle. In the technical solution of the present invention, since the inner contour of the orthographic projection of the annular area on the substrate provided with the annular area on the horizontal plane gradually increases from the inside to the outside and is arranged in sequence, the orthographic projection of the first area on the substrate provided with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate provided with the annular area on the horizontal plane, and the light beam emitted when the LED lamp beads on any substrate are lit is not blocked by the other substrate. Therefore, when the LED lamp beads on any substrate of the stacked LED module are lit, a corresponding light beam is emitted at an angle, which realizes that the lighting fixture can realize light beam transformation through one LED module, thereby reducing the cost of the lighting fixture, and at the same time, the volume and weight are also reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary personnel in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 It is a structural diagram of a substrate provided with a first area arranged on top of a plurality of substrates according to the present invention.

[0026] Figure 2 It is a front view of a substrate provided with a first area arranged on top of a plurality of substrates in one embodiment of the present invention.

[0027] Figure 3 It is a top view of a substrate provided with a first area disposed on top of a plurality of substrates in one embodiment of the present invention.

[0028] Figure 4It is a structural diagram of a substrate provided with a first area in an embodiment of the present invention when it is arranged on top of a plurality of substrates.

[0029] Figure 5 It is a top view of a substrate provided with a first area in an embodiment of the present invention when it is arranged on top of a plurality of substrates.

[0030] Figure 6 It is a top view of a substrate with a first area disposed on top of a plurality of substrates corresponding to a substrate with an annular area disposed thereon in one embodiment of the present invention.

[0031] Figure 7 It is a structural diagram of a substrate provided with a first area disposed at the bottom of a plurality of substrates in one embodiment of the present invention.

[0032] Figure 8 It is a front view of a substrate provided with a first area arranged at the bottom of a plurality of substrates in one embodiment of the present invention.

[0033] Fig. 9 It is a top view of a substrate provided with a first area disposed at the bottom of a plurality of substrates in one embodiment of the present invention.

[0034] Fig.10 It is a top view of a substrate provided with a first area in an embodiment of the present invention when it is arranged at the bottom of a plurality of substrates.

[0035] Fig.11 The present invention is a top view of a substrate provided with a first area and a plurality of substrates provided with a bottom portion thereof corresponding to a substrate provided with an annular area in an embodiment.

[0036] The marks in the accompanying drawings are: 101, substrate; 102, LED lamp bead; 103, first through hole. DETAILED DESCRIPTION

[0037] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 7 , Figure 8 and Fig. 9 As shown, the present invention provides a stacked LED light-emitting module, which may include a plurality of stacked substrates 101, a first area is arranged on one of the plurality of substrates 101, and an annular area is arranged on the other substrate 101, a plurality of LED lamp beads 102 are arranged in the first area, and a plurality of LED lamp beads 102 are arranged on each annular area, wherein, in the orthographic projections of the plurality of substrates 101 on the horizontal plane, the inner contour of the orthographic projection of the annular area on the substrate 101 provided with the annular area on the horizontal plane gradually increases from the inside to the outside and is arranged in sequence, the orthographic projection of the first area on the substrate 101 provided with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate 101 provided with the annular area on the horizontal plane, and when the LED lamp beads 102 on any substrate 101 are lit, the light beam emitted is not blocked by another substrate, so that when the LED lamp beads 102 on any substrate 101 are lit, a corresponding light beam is emitted.

[0039] Specifically, when the substrate 101 is provided, the substrate 101 can be provided with two layers, three layers, four layers, etc., therefore, the specific number of the substrate 101 is not specifically limited. When the substrate 101 is provided, it can be provided as a circular plate structure, a square plate structure, and a diamond plate structure. Those skilled in the art can determine the specific structure of the substrate 101 according to actual needs.

[0040] In the present embodiment, since the inner contour of the orthographic projection of the annular area on the substrate 101 provided with the annular area on the horizontal plane gradually increases from the inside to the outside and is arranged in sequence, the orthographic projection of the first area on the substrate 101 provided with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate 101 provided with the annular area on the horizontal plane, and the light beam emitted when the LED lamp beads 102 on any substrate 101 are lit is not blocked by the other substrate 101, therefore, when the LED lamp beads 102 on any substrate 101 of the stacked LED module are lit, a corresponding light beam is emitted at an angle, which realizes that the lighting fixture can realize light beam transformation through one LED module, thereby reducing the cost of the lighting fixture, and at the same time, reducing the volume and weight.

[0041] Here, the light beam emitted at a corresponding angle when the LED lamp beads 102 are lit means that the angles of the light beams emitted when the LED lamp beads 102 on different substrates 101 are lit are different. The horizontal plane refers to a plane parallel to the upper surface or the lower surface of the substrate.

[0042] In some embodiments, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the substrate 101 provided with the first area is located on top of several stacked substrates 101. When the substrate 101 provided with the first area is located on top of several stacked substrates 101, the outer contours of the several substrates 101 gradually decrease from bottom to top, and the substrate 101 provided with the first area is located in the annular area of ​​the adjacent substrates 101. In two upper and lower adjacent substrates 101 provided with annular areas, the substrate 101 at the upper adjacent position is located in the annular area of ​​the substrate 101 at the next adjacent position.

[0043] When the substrate 101 provided with the first area is arranged on top of a plurality of stacked substrates 101, since the substrate 101 at the last adjacent position is located in the annular area of ​​the substrate 101 at the next adjacent position, and when the LED lamp beads 102 are arranged on the substrate 101 provided with the annular area, the LED lamp beads 102 are arranged on the annular area, therefore, when the LED lamp beads 102 on any substrate 101 provided with the annular area are lit, they will not be blocked by other substrates 101 provided with the annular area. When the substrate 101 with the first area is set, it is set in the annular area of ​​the adjacent substrate 101 with the annular area. Therefore, the substrate 101 with the first area will not form an obstruction when the LED lamp beads 102 on any substrate 101 with the annular area are lit, and the substrate 101 with the first area is located on the top of several substrates 101. Therefore, when the LED lamp beads 102 in the first area are lit, no obstruction is formed, and when the LED lamp beads 102 on any substrate 101 are lit, a corresponding angle of light beam is emitted.

[0044] In some embodiments, Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, the substrate 101 provided with the first area is located at the bottom of a plurality of stacked substrates 101. When the substrate 101 provided with the first area is located at the bottom of a plurality of stacked substrates 101, each substrate 101 provided with an annular area is provided with a first through hole 103 penetrating the upper surface and the lower surface of the substrate 101. The first through hole 103 is located in the annular area of ​​the substrate 101. The projection of the first area on the substrate 101 provided with the first area on the adjacent substrate 101 is located in the first through hole 103 on the adjacent substrate 101. When a plurality of substrates 101 provided with the first through hole 103 are provided, the plurality of substrates 101 provided with The inner contour of the first through hole 103 on the substrate 101 with the first through hole 103 gradually increases from bottom to top, and the projections of the first through holes 103 on the plane of several substrates 101 with the first through holes 103 are nested in sequence, wherein, in two upper and lower adjacent substrates 101 with the first through holes 103, the projection of the annular area on the substrate 101 at the next adjacent position on the substrate 101 at the previous adjacent position is located within the first through hole 103 on the substrate 101 at the previous adjacent position, and the projection of the first area on the substrate 101 with the first area on the adjacent substrate 101 is located within the first through hole 103 on the adjacent substrate 101.

[0045] When the substrate 101 provided with the first area is set at the bottom of several stacked substrates 101, a first through hole 103 penetrating the upper surface and the lower surface of the substrate 101 is opened on each substrate 101 provided with the annular area, and the first through hole 103 is located in the annular area of ​​the substrate 101. When there are several substrates 101 provided with the annular area, the inner contours of the first through holes 103 on the several substrates 101 provided with the first through holes 103 gradually increase from bottom to top, and the projections of the first through holes 103 on the several substrates 101 provided with the first through holes 103 on the plane are sequentially nested, wherein, In two substrates 101 disposed adjacent to each other and provided with first through holes 103, the projection of the annular area on the substrate 101 at the next adjacent position on the substrate 101 at the previous adjacent position is located within the first through hole 103 on the substrate 101 at the previous adjacent position, and the projection of the first area on the substrate 101 disposed with the first area on the adjacent substrate 101 is located within the first through hole 103 on the adjacent substrate 101. Then, when the LED lamp beads 102 on any substrate 101 are lit, the emitted light will not be blocked, and when the LED lamp beads 102 on any substrate 101 are lit, a corresponding light beam at an angle is emitted.

[0046] In this embodiment, when the first through hole 103 is opened, it can be opened as a square hole, a circular hole, etc. When the annular area is set, it can be set as a circular annular area, a square annular area, a diamond annular area, etc., wherein, when the annular area is set, it is necessary to consider the arrangement scheme of the LED lamp beads 102 on the substrate 101 provided with the annular area, that is, to ensure that the set annular area can include the LED lamp beads 102 in its ring. Figure 7 , Fig. 9 and Fig.11 In the substrate 101 shown, the annular region may be a regular annular region, which can Figure 7 , Fig. 9 and Fig.11 The LED lamp beads 102 on the substrate 101 shown are included in the ring. The first area is the area where the LED lamp beads 102 on the substrate 101 are located. Figure 7 , Figure 8 , Fig. 9 and Fig.10 In the substrate 101 shown, the first region is Figure 7 , Figure 8 , Fig. 9 and Fig.10 The area where the LED lamp beads 102 are located is shown.

[0047] It should be noted that the substrate 101 at the next adjacent position refers to the substrate 101 located at the bottom of two stacked and adjacent substrates 101; the substrate 101 at the previous adjacent position refers to the substrate 101 located at the top of two stacked and adjacent substrates 101.

[0048] In a specific embodiment, if Figure 1 , Figure 2 As shown, the substrate 101 is provided with two layers, and the substrate 101 provided with the first area is provided at the top of the two substrates 101, wherein an LED lamp bead 102 is provided on the top substrate 101 (the area where the LED lamp bead 102 is located is the first area), and a plurality of LED lamp beads 102 are provided in the circumferential direction of the top substrate 101 (a ring-shaped area formed by connecting a plurality of LED lamp beads 102 in sequence is the above-mentioned ring-shaped area), wherein, Figure 1 , Figure 2 It can be seen that when the LED lamp beads 102 on the substrate 101 with the annular area are lit, the emitted light will not be blocked, and when the LED lamp beads 102 on the substrate 101 with the first area are lit, they will not be blocked either. Therefore, when the stacked LED module with two layers of substrates 101 is used, the LED lamp beads 102 on different substrates 101 can be lit as needed to achieve light beam transformation.

[0049] In another specific embodiment, Figure 7 , Figure 8 As shown, the substrate 101 is provided with two layers, and the substrate 101 provided with the first area is provided at the bottom of the two substrates 101. Figure 7 , Figure 8 It can be seen that when the LED lamp beads 102 on the substrate 101 provided with the annular area are lit, the emitted light will not be blocked. When the LED lamp beads 102 on the substrate 101 provided with the first area are lit, the emitted light of the LED lamp beads 102 on the first area is emitted through the first through hole 103 on the adjacent substrate 101 and will not be blocked. Therefore, when the stacked LED module provided with two layers of substrates 101 is used, the LED lamp beads 102 on different substrates 101 can be lit as needed to achieve light beam transformation.

[0050] In some embodiments, when connecting the upper and lower adjacent substrates 101, thermal conductive glue can be filled between the upper and lower adjacent substrates 101 to glue the two upper and lower adjacent substrates 101 together; of course, reflow solder can also be used to weld the two upper and lower adjacent substrates 101 together.

[0051] In a specific embodiment, the upper and lower adjacent substrates 101 are glued together by thermal conductive glue, wherein the thermal conductive glue can be but is not limited to thermal conductive silver glue.

[0052] In this embodiment, when the upper and lower adjacent substrates 101 are glued together by thermal conductive adhesive, when the stacked LED module is used in a specific application, the heat generated can be transferred from the substrate 101 to the thermal conductive adhesive from top to bottom, and then transferred from the thermal conductive adhesive to the substrate 101 to the bottom substrate 101 among the multiple substrates 101 for heat dissipation.

[0053] In some embodiments, Figure 6 , Fig.11 As shown, when LED lamp beads 102 are arranged on the substrate 101 provided with the annular area, the distance between any two adjacent LED lamp beads 102 along the clockwise direction or the counterclockwise direction among the plurality of LED lamp beads 102 on the substrate 101 provided with the annular area is equal.

[0054] In this embodiment, the arrangement in which the distance between any two adjacent LED lamp beads 102 in the clockwise direction or the counterclockwise direction is equal can make the substrate 101 more simple and beautiful, and make the lighting effect more uniform when the LED lamp beads 102 in a ring area are lit.

[0055] In some embodiments, the LED lamp beads 102 in the first area and the LED lamp beads 102 in the annular area are both white light LED lamp beads 102 , wherein the power of the LED lamp beads 102 in the first area is greater than the power of the LED lamp beads 102 in any annular area.

[0056] When the stacked LED light-emitting module is applied, the LED lamp beads 102 in the first area can be located at the focal position of the focusing lens or the reflective cup on the lighting fixture. Since the power of the LED lamp beads 102 in the first area is greater than the power of the LED lamp beads 102 in any annular area, when it is necessary to illuminate a distant target in front with a small field of view angle, the LED lamp beads 102 in the first area can be lit. Because the LED lamp beads 102 in the first area are located at the focal point of the focusing lens or the reflective cup, a beam of strong light with a small divergence angle is formed after lighting; when it is necessary to illuminate a target that is closer in front and has a larger field of view, the LED lamp beads 102 on the corresponding substrate 101 with an annular area are lit as needed. The lit LED lamp beads 102 will pass through the focusing lens or the reflective cup and will be superimposed at a large angle in front, illuminating a large range of scenes in front, thereby meeting different lighting application needs.

[0057] In some embodiments, the electrode on the substrate 101 having the first region is disposed at any position outside the first region on the substrate 101 ; the electrode on the substrate 101 having the annular region is disposed at any position outside the annular region on the substrate 101 .

[0058] In this embodiment, when the electrode is set, it can be set at any position of the substrate 101 without affecting the light emission and installation of the LED lamp beads 102. Specifically, when the electrode is set on the substrate 101 with the first area, it can be set on the same side as the LED lamp beads 102 on the substrate 101 with the first area, or it can be set on the side opposite to the LED lamp beads 102 on the substrate 101 with the first area; when the electrode is set on the substrate 101 with the annular area, it can be set on the same side as the LED lamp beads 102 on the substrate 101 with the annular area, or it can be set on the side opposite to the LED lamp beads 102 on the substrate 101 with the annular area. It can be seen that the electrode setting method is relatively flexible, wherein the electrode includes a positive electrode and a negative electrode.

[0059] In some embodiments, when the substrate 101 in the first area is located at the bottom of several substrates 101, in order to further save costs and reduce the volume and weight of lighting fixtures using the stacked LED module, the outer contours of the several substrates 101 gradually increase from bottom to top.

[0060] In this embodiment, when the substrate 101 in the first area is located at the bottom of the plurality of substrates 101 , since the outer contours of the plurality of substrates 101 gradually increase from bottom to top, the cost of the stacked LED module is further reduced, and the volume and weight are also further reduced.

[0061] In some embodiments, the substrate 101 may be, but is not limited to, a ceramic substrate 101 .

[0062] In some embodiments, the present invention further provides a lighting fixture, which includes the stacked LED light-emitting module described above.

[0063] Specifically, the lighting fixture can be a lighting fixture with a focusing lens or a lighting fixture with a reflective cup. When the stacked LED light-emitting module is used in a lighting fixture with a focusing lens, when the LED lamp beads 102 on the substrate 101 with the first area are located at the focus of the focusing lens or the reflective cup, the LED lamp beads 102 on the substrate 101 with the annular area are located in front of or behind the focal plane. When it is necessary to illuminate a front target with a small field of view angle at a long distance, the LED lamp beads 102 in the first area can be lit. (It can be provided with high-power white light LED lamp beads 102), since the LED lamp beads 102 in the first area are located at the focus of the focusing lens or the reflective cup, a beam of strong light with a small divergence angle is formed after being lit; when it is necessary to illuminate a target that is closer in front and has a larger field of view, the corresponding LED lamp beads 102 on the substrate 101 with an annular area are lit as needed, and the lit LED lamp beads 102 will pass through the focusing lens or the reflective cup and will be superimposed at a large angle in front, illuminating a large range of scenes in front, thereby meeting different lighting application needs.

[0064] It can be seen that when the stacked LED module is applied in a lighting fixture, the lighting fixture can be transformed by a single LED module (lighting up the LED lamp beads 102 on different substrates 101 as needed), thereby reducing the cost of the lighting fixture while also reducing its volume and weight.

[0065] In some embodiments, the present invention further provides a method for preparing the stacked LED light-emitting module as described above, the method comprising:

[0066] S1. providing a plurality of substrates, wherein a first region is disposed on one of the plurality of substrates, and a ring region is disposed on another of the plurality of substrates;

[0067] S2, setting an LED lamp bead in the first area on the substrate where the first area is set;

[0068] S3, arranging a plurality of LED lamp beads on the annular area on the substrate provided with the annular area;

[0069] S4. Stack the substrate with LED lamp beads in the first area and the substrate with LED lamp beads on the annular area, wherein, in the orthographic projections of the plurality of substrates on the horizontal plane, the inner contour of the orthographic projection of the annular area on the substrate with the annular area on the horizontal plane gradually increases from the inside to the outside and are arranged in sequence, the orthographic projection of the first area on the substrate with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate with the annular area on the horizontal plane, and the light beam emitted when the LED lamp beads on any substrate are lit is not blocked by the other substrate, so that the LED lamp beads on any substrate emit a corresponding light beam at an angle when they are lit.

[0070] In this embodiment, LED lamp beads are attached to a substrate, and the position where the LED lamp beads are attached on the substrate is regarded as the first area. An annular area is set on each of the other substrates. After the annular area is determined, a number of LED lamp beads are set on each annular area. Thereafter, the substrate with the first area and the substrate with the annular area are stacked in sequence, wherein thermal conductive glue can be filled between two adjacent substrates to glue the two substrates together, or reflow solder can be used to weld the two adjacent substrates together, and the specific details can be determined according to actual conditions.

[0071] When the substrates are stacked, the inner contour of the orthographic projection of the annular area on the substrate provided with the annular area on the horizontal plane gradually increases from the inside to the outside and is arranged in sequence, the orthographic projection of the first area on the substrate provided with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate provided with the annular area on the horizontal plane, and the light beam emitted when the LED lamp bead on any substrate is lit is not blocked by the other substrate.

[0072] When the substrate is set, the substrate can be set to two layers, three layers, four layers, etc., so the specific number of the substrate is not specifically limited. When the substrate is set, it can be set to a circular plate structure, a square plate structure and a diamond plate structure. Those skilled in the art can determine the specific structure of the substrate according to actual needs.

[0073] It can be seen that when the LED lamp beads on any substrate of the stacked LED module are lit, a corresponding light beam is emitted at a certain angle, so that the lighting fixture can achieve light beam transformation through one LED module, thereby reducing the cost of the lighting fixture, and at the same time, reducing the volume and weight.

[0074] Here, it should be pointed out that the description of the above lighting fixture and the manufacturing method embodiment is similar to the description of the above stacked LED light-emitting module embodiment, and has similar beneficial effects as the above stacked LED light-emitting module. For technical details not disclosed in the lighting fixture and the manufacturing method embodiment, please refer to the description of the stacked LED light-emitting module embodiment of the present invention for understanding.

[0075] In summary, the present invention provides a stacked LED light-emitting module, a lighting fixture and a preparation method, which have the following beneficial effects:

[0076] Since the inner contour of the orthographic projection of the annular area on the substrate 101 provided with the annular area on the horizontal plane gradually increases from the inside to the outside and is arranged in sequence, the orthographic projection of the first area on the substrate 101 provided with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate 101 provided with the annular area on the horizontal plane, and the light beam emitted when the LED lamp beads 102 on any substrate 101 are lit is not blocked by the other substrate 101. Therefore, when the LED lamp beads 102 on any substrate 101 of the stacked LED module are lit, a corresponding light beam is emitted at an angle, which realizes that the lighting fixture can realize light beam transformation through one LED module, thereby reducing the cost of the lighting fixture, and at the same time, reducing the volume and weight.

[0077] It can be understood that the above embodiments only express the preferred implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, the above technical features can be freely combined without departing from the concept of the present invention, and several deformations and improvements can be made, which all belong to the protection scope of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should belong to the coverage of the claims of the present invention.

Claims

1. A stacked LED light-emitting module, characterized in that: include: A plurality of stacked substrates, one of the plurality of substrates is provided with a first area, the other substrate is provided with an annular area, the first area is provided with LED lamp beads, and each annular area is provided with a plurality of LED lamp beads; Among them, in the orthographic projections of several of the substrates on the horizontal plane, the inner contour of the orthographic projection of the annular area on the substrate provided with the annular area on the horizontal plane gradually increases from the inside to the outside and is arranged in sequence, the orthographic projection of the first area on the substrate provided with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate provided with the annular area on the horizontal plane, and the light beam emitted when the LED lamp bead on any substrate is lit is not blocked by the other substrate, so that when the LED lamp bead on any substrate is lit, a corresponding light beam is emitted at an angle.

2. The stacked LED light-emitting module according to claim 1, characterized in that: The substrate provided with the first area is located on top of the plurality of stacked substrates. When the substrate provided with the first area is located on top of the plurality of stacked substrates, the outer contours of the plurality of substrates gradually decrease from bottom to top. The substrate provided with the first area is located within the annular area of ​​an adjacent substrate. In two upper and lower adjacent substrates provided with annular areas, the substrate at the upper adjacent position is located within the annular area of ​​the substrate at the lower adjacent position.

3. The stacked LED light-emitting module according to claim 1, characterized in that: The substrate provided with the first area is located at the bottom of several stacked substrates. When the substrate provided with the first area is located at the bottom of several stacked substrates, each substrate provided with the annular area is provided with a first through hole that penetrates the upper surface and the lower surface of the substrate, and the first through hole is located in the annular area of ​​the substrate. The first area on the substrate provided with the first area is projected on the adjacent substrate and located in the first through hole on the adjacent substrate. When there are several substrates provided with the first through hole, the inner contours of the first through holes on the several substrates provided with the first through holes gradually increase from bottom to top, and the projections of the first through holes on the plane of the several substrates provided with the first through holes are nested in sequence, wherein, in two substrates provided with the first through holes that are adjacent to each other in upper and lower positions, the projection of the annular area on the substrate at the next adjacent position on the substrate at the previous adjacent position is located in the first through hole on the substrate at the previous adjacent position, and the projection of the first area on the substrate provided with the first area on the adjacent substrate is located in the first through hole on the adjacent substrate.

4. The stacked LED light-emitting module according to any one of claims 1 to 3, characterized in that: The space between the upper and lower adjacent substrates is filled with heat-conducting glue, or the upper and lower adjacent substrates are welded by reflow solder.

5. The stacked LED light-emitting module according to claim 2 or 3, characterized in that: Among the plurality of LED lamp beads on the substrate provided with the annular area, the distance between any two adjacent LED lamp beads along the clockwise direction or the counterclockwise direction is equal.

6. The stacked LED light-emitting module according to claim 5, characterized in that: The LED lamp beads in the first area and the LED lamp beads in the annular area are both white light LED lamp beads, wherein the power of the LED lamp beads in the first area is greater than the power of the LED lamp beads in any annular area.

7. The stacked LED light-emitting module according to claim 6, characterized in that: The electrode on the substrate provided with the first region is provided at any position outside the first region on the substrate; The electrode on the substrate provided with the annular region is provided at any position outside the annular region on the substrate.

8. The stacked LED light-emitting module according to claim 3, characterized in that: When the substrate provided with the first area is located at the bottom of the plurality of substrates, the outer contours of the plurality of substrates gradually increase from bottom to top.

9. A lighting fixture, characterized in that: The lighting fixture comprises the stacked LED light-emitting module as described in any one of claims 1-8.

10. A method for preparing a stacked LED light-emitting module according to any one of claims 1 to 8, characterized in that: The preparation method comprises: Providing a plurality of substrates, wherein one of the plurality of substrates is provided with a first region, and another substrate is provided with a ring region; An LED lamp bead is arranged in the first area on the substrate where the first area is arranged; A plurality of LED lamp beads are arranged on the annular area on the substrate provided with the annular area; The substrate with LED lamp beads arranged in the first area and the substrate with LED lamp beads arranged on the annular area are stacked, wherein, in the orthographic projections of several substrates on the horizontal plane, the inner contour of the orthographic projection of the annular area on the substrate with the annular area on the horizontal plane gradually increases from the inside to the outside and are arranged in sequence, the orthographic projection of the first area on the substrate with the first area on the horizontal plane is located within the orthographic projection of the innermost annular area of ​​the orthographic projection of the annular area on the substrate with the annular area on the horizontal plane, and the light beam emitted when the LED lamp beads on any substrate are lit is not blocked by the other substrate, so that when the LED lamp beads on any substrate are lit, a corresponding light beam is emitted at an angle.

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