Light mixing device and lamp

Abstract

The utility model provides a light mixing device and a lamp, and the light mixing device is applied to a multicolor light source and comprises a primary light mixing assembly and a secondary light mixing assembly. The first-stage light mixing assembly comprises a first-stage optical element and a light mixing layer. The first-stage optical element is located in the light emitting direction of the multi-color light source and reflects light emitted by the multi-color light source, and the light mixing layer is assembled on the side, away from the multi-color light source, of the first-stage optical element and conducts preliminary light mixing on the light emitted by the multi-color light source; the second-stage light mixing assembly comprises a second-stage optical element, and the second-stage optical element is assembled on the side, away from the first-stage optical element, of the light mixing layer so as to conduct secondary light mixing on the light emitted by the light mixing layer. Compared with the prior art, the light mixing device can improve the uniformity of light mixing colors and improve the light extraction rate.

Description

TECHNICAL FIELD

[0001] The utility model relates to a light mixing device and lamp, belong to lighting technical field. BACKGROUND

[0002] With the development of society, people's lighting requirements for lamps are also higher and higher. CSP lamp beads are widely used in lamps as light sources because of small size, high brightness and high flexibility. On the market, a light source mode of multiple double-color CSP lamp beads is mostly used, but because this light source belongs to large light-emitting surface and large spacing, it brings specific difficulties to light distribution, and a series of problems such as uneven color mixing, non-circular light spot and low light extraction rate are prone to occur.

[0003] Therefore, it is necessary to improve the existing light mixing device of the lamp to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] The utility model discloses a light mixing device, color distribution is even, and light extraction rate is high.

[0005] In order to achieve the above object, the utility model provides a light mixing device, be applied to multicolor light source, include:

[0006] The first light mixing assembly includes a first optical element and a light mixing layer. The first optical element is located in the light emitting direction of the multicolor light source and reflects the light emitted by the multicolor light source. The light mixing layer is assembled on the side of the first optical element away from the multicolor light source, and the light emitted by the multicolor light source is preliminarily mixed.

[0007] The second light mixing assembly includes a second optical element. The second optical element is assembled on the side of the light mixing layer away from the first optical element to perform secondary light mixing on the light emitted by the light mixing layer.

[0008] As a further improvement of the utility model, the mounting bracket is provided on the light emitting side of the multicolor light source. The first optical element and the light mixing layer are mounted on the mounting bracket.

[0009] As a further improvement of the utility model, the first optical element is a reflector cup, and the end facing the light mixing layer is provided with a mounting edge connected with the mounting bracket.

[0010] As a further improvement of the utility model, the mounting bracket is provided with a light emitting hole for accommodating the first optical element and a mounting groove communicated with the light emitting hole. The mounting edge is accommodated in the mounting groove.

[0011] As a further improvement of the utility model, the mounting edge is provided with an insert piece curved towards the mounting bracket. The mounting groove is correspondingly provided with an insertion hole for inserting the insert piece.

[0012] As a further improvement of the present application, the light mixing layer is located at the opening of the mounting groove and partially covers the mounting groove.

[0013] As a further improvement of the present application, the mounting bracket further comprises a mounting portion located outside the mounting groove, the mounting portion is provided with a fixing hole, and the light mixing layer is provided with a connecting hole in alignment with the fixing hole for the fastener to pass through, so as to connect the light mixing layer and the mounting bracket.

[0014] As a further improvement of the present application, the secondary optical element is a lens, and the optical curved surface of the lens is a non-uniform rational B-spline (NURBS) curve.

[0015] Another object of the present application is to provide a lamp with the light mixing device.

[0016] To achieve the above object, the present application provides a lamp, comprising:

[0017] a lamp body;

[0018] a multi-color light source assembled in the lamp body;

[0019] a light mixing device as described above, which is connected with the lamp body and located in the light emitting direction of the multi-color light source.

[0020] As a further improvement of the present application, the light mixing device comprises a mounting bracket, the mounting bracket is provided with a mounting portion connected with the lamp body, the mounting portion is provided with a fixing hole, and the lamp body is provided with a matching hole in alignment with the fixing hole for the fastener to pass through.

[0021] The present application has the following beneficial effects: the light mixing device of the present application is provided with a primary light mixing assembly and a secondary light mixing assembly, so that the primary light mixing assembly can be used to preliminarily mix the light emitted by the multi-color light source, and the secondary light mixing assembly can be used to secondarily mix the light emitted by the primary light mixing assembly. The uniformity of the mixed light color and the light extraction rate can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the lamp of the present application.

[0023] Figure 2 is Figure 1 an exploded view of

[0024] Figure 3 is Figure 2 the first housing in

[0025] Figure 4 is Figure 2 a schematic diagram of the three-dimensional structure of the lamp body in

[0026] Figure 5 is Figure 2Assembly view of middle lamp body and multi-color light source.

[0027] Figure 6 is Figure 2 Assembly view of middle lamp body and partial light mixing device.

[0028] Figure 7 is Figure 6 Assembly view of middle mounting bracket and primary optical element.

[0029] Figure 8 is Figure 7 Perspective structural schematic view of middle primary optical element.

[0030] Figure 9 is Figure 7 Perspective structural schematic view of middle mounting bracket.

[0031] Figure 10 is Figure 7 Another perspective structural schematic view of middle mounting bracket.

[0032] Figure 11 is Figure 6 Perspective structural schematic view of middle light mixing layer.

[0033] Figure 12 is Figure 2 Perspective structural schematic view of middle rotating member.

[0034] Figure 13 is Figure 2 Assembly view of middle limiting member and secondary optical element.

[0035] Reference signs:

[0036] 100 - lamp;

[0037] 10 - first shell; 11 - mounting port; 12 - mounting ring; 121 - rib;

[0038] 20 - lamp body; 21 - limiting groove; 22 - groove; 23 - clamping table; 24 - fitting hole; 25 - guide rib;

[0039] 30 - light mixing device; 31 - primary optical element; 311 - light reflection main body; 312 - mounting edge; 3121 - plug-in element; 32 - light mixing layer; 321 - connecting hole; 322 - bending part; 33 - secondary optical element; 331 - support edge; 34 - mounting bracket; 341 - support column; 342 - light outlet hole; 343 - mounting slot; 3431 - insertion hole; 344 - mounting part; 3441 - fixing hole; 345 - limiting column; 35 - rotating member; 351 - guide slot; 352 - buckling slot; 36 - limiting member;

[0040] 40 - multi-color light source; 41 - light source plate; 42 - lamp bead

[0041] 50 - swivel joint;

[0042] 60 - second housing;

[0043] 70 - fastener. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the utility model more clear, the utility model will be described in detail below in combination with the drawings and specific embodiments.

[0045] Please refer to Figures 1-2 The utility model discloses a lamp 100, including first shell 10, the lamp body 20 of assembling in one end of first shell 10 and with the light mixing device 30 of lamp body 20 connection. The lamp body 20 is equipped with multicolor light source 40, and the light mixing device 30 is located in the light emitting direction of multicolor light source 40, for mixing the light of multicolor light source 40.

[0046] As Figure 3 The first shell 10 is preferably cylindrical and is integrally formed from aluminum. The first shell 10 has a mounting opening 11 in which the lamp body 20 is mounted and located at one end of the first shell 10. The end of the first shell 10 away from the lamp body 20 is provided with a swivel joint 50. The swivel joint 50 is used to adjust the illumination angle and range of the lamp 100 after the lamp 100 is installed. The structure of the swivel joint 50 and the connection method thereof with the first shell 10 can be prior art, and will not be described in detail.

[0047] The first shell 10 is provided with a mounting ring 12 for limiting the installation of the lamp body 20. The mounting ring 12 is arranged in close contact with the inner peripheral wall of the first shell 10 and is fixedly connected with the first shell 10. The lamp body 20 partially extends into the mounting ring 12 and is fixedly connected with the mounting ring 12, thereby achieving the fixed installation of the lamp body 20 with the first shell 10. In this embodiment, the fixed connection of the first shell 10, the mounting ring 12 and the lamp body 20 is preferably achieved synchronously by screws. The screws fix the mounting ring 12 and the lamp body 20 in the first shell 10 along the axial direction of the first shell 10. Specifically, the side of the mounting ring 12 facing the lamp body 20 is provided with a protruding clamping rib 121, and the lamp body 20 is provided with a limiting groove 21 for the clamping rib 121 to extend into, as shown in Figure 4 The clamping rib 121 limits the lamp body 20 in the radial direction.

[0048] As Figure 5As shown, the lamp body 20 is provided with a groove 22 for installing the multi-color light source 40 at one end away from the mounting ring 12. The multi-color light source 40 is installed in the groove 22 to emit light towards the side away from the first shell 10. The multi-color light source 40 comprises a light source plate 41 and a plurality of lamp beads 42 mounted on the light source plate 41. The plurality of lamp beads 42 can emit light of at least two colors. Preferably, the multi-color light source 40 is a light source mode of combining a plurality of double-color csp lamp beads, so that the lamp 100 can form a large light emitting surface and a large interval light source. For example, the double-color csp lamp beads can include two csp lamp beads of different color temperatures. The lamp body 20 is spaced apart from the inner peripheral wall of the first shell 10 and forms a mounting space surrounded by the first shell 10, the mounting ring 12 and the lamp body 20. The outer peripheral wall of the lamp body 20 is provided with a clamping table 23 extending into the mounting space. The lamp 100 further comprises a second shell 60 partially extending into the mounting space and clamped and fixed with the clamping table 23. The second shell 60 is arranged on the outer side of the lamp body 20 and extends away from the first shell 10. The light mixing device 30 enters the connection with the lamp body 20 from the end of the second shell 60 away from the first shell 10.

[0049] As shown in Figure 2 and Figures 6-13 , the light mixing device 30 comprises a primary light mixing component and a secondary light mixing component in the light emitting direction of the multi-color light source 40. The primary light mixing component comprises a primary optical element 31 and a light mixing layer 32 mounted on the side of the primary optical element 31 away from the multi-color light source 40. The primary optical element 31 is used to reflect part of the light emitted by the multi-color light source 40, so that more light is emitted after reflection to the light mixing layer 32. The light mixing layer 32 performs preliminary light mixing on the light reflected by the primary optical element 31 and the light directly emitted by the multi-color light source 40. The secondary light mixing component comprises a secondary optical element 33. The secondary optical element 33 is mounted on the side of the light mixing layer 32 away from the primary optical element 31 to perform secondary light mixing on the light emitted by the light mixing layer 32. The present application further mixes the poor light spots by primary light mixing and secondary light mixing of the light emitted by the multi-color light source 40, effectively improving the uniformity of the light mixing color.

[0050] The light mixing device 30 further comprises a mounting bracket 34 located on the light emitting side of the multi-color light source 40. The mounting bracket 34 is connected and fixed with the lamp body 20. The primary optical element 31 and the light mixing layer 32 are mounted on the mounting bracket 34. As shown in Figure 8 , the primary optical element 31 is preferably a reflecting cup. It comprises a reflecting main body 311 and a mounting edge 312 at one end of the reflecting main body 311 towards the light mixing layer 32. The mounting edge 312 extends away from the reflecting main body 311 and is substantially perpendicular to the reflecting main body 311. The mounting edge 312 is used to connect with the mounting bracket 34. The primary optical element 31 preferably adopts a mirror surface reflecting aluminum cup with a reflectivity greater than 85%, which can effectively improve the light extraction rate. AsFigure 9 As shown, the mounting bracket 34 is provided with a light outlet hole 342 for accommodating the light reflection main body 311 of the first optical element 31, and a mounting groove 343 in communication with the light outlet hole 342, and the mounting edge 312 is accommodated in the mounting groove 343. The mounting edge 312 is flush with the end surface of the mounting bracket 34. Preferably, the mounting edge 312 is provided with an insert 3121 curved towards the mounting bracket 34, and the mounting groove 343 is correspondingly provided with an insertion hole 3431 for the insert 3121. The insert 3121 is preferably provided with a plurality of inserts located at the edge position of the mounting edge 312. The insert 3121 and the insertion hole 3431 are adapted to limit the first optical element 31 on the mounting bracket 34. The mounting bracket 34 is provided with a support column 341 on the side facing the lamp body 20, which extends into the recess 22 and abuts against the light source plate 41. A plurality of support columns 341 are located on the outer side of the lamp beads 42, and the support column 341 can ensure the stable position of the light source plate 41. The mounting bracket 34 is also provided with a limiting column 345 on the side facing the lamp body 20, which is inserted into the lamp body 20, and the limiting column 345 can limit the mounting bracket 34 and the lamp body 20 in the radial direction.

[0051] The light mixing layer 32 is located at the opening of the mounting groove 343 and partially covers the mounting groove 343. The light mixing layer 32 is arranged in close contact with the mounting bracket 34, and the light mixing layer 32 is preferably arranged in close contact with the first optical element 31. As shown in Figures 9-11 As shown, the mounting bracket 34 is also provided with a mounting portion 344 located outside the mounting groove 343, and the mounting portion 344 is provided with a fixing hole 3441. The light mixing layer 32 is provided with a connecting hole 321 in registration with the fixing hole 3441 for the fastener 70 to pass through, so as to connect the light mixing layer 32 and the mounting bracket 34. Preferably, the mounting portion 344 is connected with the lamp body 20, and the lamp body 20 is provided with a matching hole 24 in registration with the fixing hole 3441 for the fastener 70 to pass through. That is, the fastener 70 passes through the connecting hole 321, the fixing hole 3441 and the matching hole 24 in sequence to realize the synchronous connection of the light mixing layer 32, the mounting bracket 34 and the lamp body 20. In this embodiment, the mounting portion 344 is offset towards the lamp body 20, and the light mixing layer 32 is provided with a bending portion 322 in close contact with the surface of the mounting bracket 34 to ensure close connection. Of course, in other optional embodiments, the mounting portion 344 can be arranged flush with the opening of the mounting groove 343, and the light mixing layer 32 can be a one-piece structure, which is not limited.

[0052] In this embodiment, the second optical element 33 is preferably a lens, and the optical surface of the lens is preferably a non-uniform rational B-spline (NURBS) surface, which improves the light mixing effect. The light mixing device 30 further comprises a connecting assembly for mounting the second optical element 33. The connecting assembly comprises a rotating member 35 connected between the lamp body 20 and the second housing 60, and a limiting member 36 located at the end of the rotating member 35 away from the lamp body 20. The second optical element 33 is mounted on the limiting member 36. Specifically, as shown in Figure 4 andFigure 12 As shown, the rotating member 35 is annularly arranged outside the lamp body 20 and extends away from the first shell 10. The inner circumferential wall of the rotating member 35 is provided with an inclined guide groove 351 extending to both ends of the rotating member 35 in the axial direction. The outer circumferential wall of the lamp body 20 is provided with a guide rib 25 extending into the guide groove 351. The guide rib 25 is inclinedly arranged and extends from the end of the lamp body 20 for mounting the multi-color light source 40 to the clamping table 23. Through the cooperation of the guide groove 351 and the guide rib 25, the secondary optical element 33 at one end of the rotating member 35 can be close to or away from the light mixing layer 32. In the embodiment, sealing rings (not numbered) are arranged between the lamp body 20 and the rotating member 35, between the rotating member and the second shell, and between the second shell and the first shell, which play the role of sealing and tight connection.

[0053] As shown, Figure 13 The limiting member 36 is annularly arranged on the inner circumferential wall of the rotating member 35, and the limiting member 36 is provided with a buckle 361 protruding towards the rotating member 35. The rotating member 35 is provided with a buckle groove 352 for the buckle 361 to extend into, so as to connect and fix the limiting member 36 with the rotating member 35. The side of the secondary optical element 33 close to the lamp body 20 is provided with a protruding supporting edge 331, which is supported on the side of the limiting member 36 close to the lamp body 20, so as to realize the installation of the secondary optical element 33.

[0054] In the embodiment, the primary optical element 31, the light mixing layer 32, and the secondary optical element 33 are preferably arranged in close contact. Of course, in other optional embodiments, the secondary optical element 33 can also be arranged spaced apart from the primary optical element 31 and the light mixing layer 32, which is not limited.

[0055] In summary, the light mixing device 30 of the utility model sets the light mixing layer 32 on the side of the primary optical element 31 away from the multi-color light source 40, so as to preliminarily mix the light emitted by the multi-color light source 40 through the primary optical element 31 and the light mixing layer 32. The secondary optical element 33 is arranged on the side of the light mixing layer 32 away from the primary optical element 31, so as to perform secondary light mixing on the light emitted by the light mixing layer 32. The uniformity of the light mixing color and the light extraction rate can be improved.

[0056] The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit. Although the utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the utility model.

Claims

1. A light mixing device applied to a multi-color light source, characterized in that, The application relates to a light mixing device, which comprises: a primary light mixing assembly, which comprises a primary optical element (31) and a light mixing layer (32), the primary optical element (31) is arranged on the light emitting direction of a multi-color light source (40) and reflects the light emitted by the multi-color light source (40); the light mixing layer (32) is arranged on the side, away from the multi-color light source (40), of the primary optical element (31) and performs primary light mixing on the light emitted by the multi-color light source (40); a secondary light mixing assembly, which comprises a secondary optical element (33), the secondary optical element (33) is arranged on the side, away from the primary optical element (31), of the light mixing layer (32) and performs secondary light mixing on the light emitted by the light mixing layer (32). The application further comprises a mounting bracket (34) arranged on the light emitting side of the multi-color light source (40), and the primary optical element (31) and the light mixing layer (32) are mounted on the mounting bracket (34). The primary optical element (31) is a reflecting cup, and an installation edge (312) is arranged on the end of the primary optical element (31) and faces the light mixing layer (32), the installation edge (312) is connected with the mounting bracket (34).

2. The light mixing device of claim 1, wherein: The mounting bracket (34) is provided with a light emitting hole (342) for accommodating the primary optical element (31) and a mounting groove (343) in communication with the light emitting hole (342), and the installation edge (312) is accommodated in the mounting groove (343).

3. The light mixing device of claim 2, wherein: An insertion piece (3121) is arranged on the installation edge (312) and bends towards the mounting bracket (34), and a corresponding insertion hole (3431) is arranged in the mounting groove (343) for the insertion of the insertion piece (3121).

4. The light mixing device of claim 3, wherein: The light mixing layer (32) is arranged at the opening of the mounting groove (343) and partially covers the mounting groove (343).

5. The light mixing device of claim 4, wherein: The mounting bracket (34) is further provided with a mounting portion (344) arranged outside the mounting groove (343), the mounting portion (344) is provided with a fixing hole (3441), the light mixing layer (32) is provided with a connecting hole (321) in alignment with the fixing hole (3441) and for the penetration of a fastener (70), so that the light mixing layer (32) is connected with the mounting bracket (34).

6. The light mixing device of claim 4, wherein: The secondary optical element (33) is a lens, and the optical surface of the lens is a non-uniform rational B-spline (NURBS) surface.

7. The light mixing device of claim 6, wherein: The application further relates to a lamp body (20), a multi-color light source (40) arranged in the lamp body (20), and the light mixing device (30) according to any one of claims 1-8, which is connected with the lamp body (20) and arranged on the light emitting direction of the multi-color light source (40).

8. The light mixing device of claim 1, wherein: The light mixing device (30) comprises a mounting bracket (34), the mounting bracket (34) is provided with a mounting portion (344) connected with the lamp body (20), the mounting portion (344) is provided with a fixing hole (3441), and the lamp body (20) is provided with a matching hole (24) in alignment with the fixing hole (3441) and for the penetration of a fastener (70).

9. A luminaire characterized by, ​ ​ ​ ​ 10. The luminaire of claim 9, wherein: ​

Images