Composite parabola curved surface reflection cup and flashlight with reflection cup

Abstract

The embodiment of the utility model relates to a composite parabola curved surface reflection cup and a flashlight with the reflection cup. A first parabola curved surface and N second parabola curved surfaces formed by recessing the first parabola curved surface are formed on the composite parabola curved surface reflection cup; every two adjacent second parabolic curved surfaces are separated from each other or the edges of the second parabolic curved surfaces are overlapped; the corresponding focus of each second parabola curved surface and the focus of the first parabola curved surface are positioned on the same plane; the edge of the top end of each second parabola curved surface is overlapped with the edge of the top end of the first parabola curved surface; and the bottom end opening of each second parabolic curved surface is communicated with the bottom end opening of the first parabolic curved surface. Light emitted by the LED lamp beads can be reflected by the corresponding parabolic curved surfaces, light condensation is accurate, meanwhile, mutual interference of the light is avoided, and light condensation light spots which are different in shape or color (corresponding to the color of light emitted by the LED lamp beads), clear in edge and uniform in intensity distribution can be obtained.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, specifically to a composite parabolic reflector and a flashlight having the reflector. Background Technology

[0002] In modern lighting applications, such as stage lighting design, industrial precision machining, and medical surgical lighting, there are extremely high requirements for precise control of light and diverse light spot effects. Traditional multi-source lighting devices typically use multiple independent reflectors to correspond to different light sources. This design not only increases the size and cost of the device but also suffers from problems such as difficulty in light coordination and overlapping light spots. Even in some single-reflector designs, the simple internal structure makes it impossible to achieve independent and efficient focusing of multiple light sources at different locations, resulting in low light utilization and unsatisfactory light spot shape and intensity distribution. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide a composite parabolic reflector cup and a flashlight having the reflector cup to overcome or at least partially solve the above problems.

[0004] In a first aspect, this utility model provides a composite parabolic reflector cup, which has a first parabolic surface and N second parabolic surfaces formed concave within the first parabolic surface; each pair of adjacent second parabolic surfaces is separated from each other or their edges overlap; the focal point of each second parabolic surface is on the same plane as the focal point of the first parabolic surface; the top edge of each second parabolic surface overlaps with the top edge of the first parabolic surface; and the bottom opening of each second parabolic surface communicates with the bottom opening of the first parabolic surface.

[0005] In one embodiment, the composite parabolic reflector cup comprises an aluminum alloy body and a coating covering the surfaces of the first parabolic surface and each of the second parabolic surfaces.

[0006] In one embodiment, a positioning hole is formed at the bottom of the composite parabolic reflector.

[0007] Secondly, this utility model provides a flashlight, which includes a lamp head assembly, a body, a tail cap, and a battery; the lamp head assembly includes a housing, a composite parabolic reflector as described in the first aspect, N+1 LED beads, and a substrate; the composite parabolic reflector, LED beads, and substrate are all arranged inside the housing; the LED beads are fixed on the substrate, and each LED bead is arranged at the focal point of a corresponding first parabolic surface or second parabolic surface.

[0008] In one embodiment, the bottom of the composite parabolic reflector cup is formed with M positioning holes, where M is greater than or equal to 2; the substrate is fixed with M positioning posts, each positioning post extending into the corresponding positioning hole.

[0009] In one embodiment, the lamp head assembly further includes a heat sink fixed inside the housing, and the substrate is attached to and fixed to the heat sink with its back facing the bottom surface of the composite parabolic reflector; an annular insulating pad is arranged between the composite parabolic reflector and the substrate; the LED beads are located in the area surrounded by the annular insulating pad.

[0010] In this embodiment of the flashlight, the light emitted by each LED can be reflected by the corresponding parabolic surface, resulting in precise focusing while avoiding mutual interference of light. This allows for the creation of focused light spots of different shapes or colors (corresponding to the colors emitted by the LEDs), with clear edges and uniform intensity distribution.

[0011] Compared to designs using multiple independent reflectors, the composite parabolic reflector integrates multiple parabolic surfaces, significantly reducing material costs and effectively lowering the overall size and weight of the device, making it more advantageous for installation in space-constrained application scenarios. Attached Figure Description

[0012] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0013] Figure 1 A flashlight according to one embodiment of the present invention is schematically shown;

[0014] Figure 2 schematically shown Figure 1 A cross-sectional view of the flashlight in the image;

[0015] Figure 3 schematically shown Figure 1 A structural diagram of a flashlight without a planar lens;

[0016] Figure 4 schematically shown Figure 2 Composite parabolic reflector cup;

[0017] Figure 5 schematically shown Figure 2 Composite parabolic reflector cup;

[0018] Figure 6 schematically shown Figure 2 Composite parabolic reflector cup;

[0019] Figure 7 schematically shown Figure 2 The substrate and LED beads in the process.

[0020] Explanation of reference numerals in the attached drawings: 1. Lamp head assembly; 2. Cylinder body; 3. Tail cap; 4. Battery; 5. Housing; 6. Plane lens; 7. Composite parabolic reflector cup; 8. LED lamp bead; 9. Substrate; 10. Switch; 11. Control circuit; 12. First parabolic surface; 13. Second parabolic surface; 14. Positioning hole; 15. Positioning post; 16. Heat sink; 17. Annular insulating pad. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below, with examples of the embodiments shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. Those skilled in the art can make various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the claims and their equivalents.

[0022] The terms “center,” “longitudinal,” “transverse,” “length,” “upper,” “lower,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “axial,” “radial,” and “circumferential,” mentioned or possibly mentioned in the description of this utility model, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Additionally, the terms "comprising," "including," and any variations thereof are intended to cover non-exclusive inclusion.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The following description, with reference to the accompanying drawings, describes a flashlight according to an embodiment of the present invention.

[0026] See Figure 1 and Figure 3 According to an embodiment of the present invention, a flashlight includes a lamp head assembly 1, a tube body 2, a tail cap 3, and a battery 4. The two ends of the tube body 2 are connected to the lamp head assembly 1 and the tail cap 3, respectively. The battery 4 is arranged within the space enclosed by the tube body 2, the lamp head assembly 1, and the tail cap 3. The lamp head assembly 1 includes a housing 5, a planar lens 6, a composite parabolic reflector 7, N+1 LED beads 8, a substrate 9, a switch 10, and a control circuit 11. The composite parabolic reflector 7, the LED beads 8, the substrate 9, and the control circuit 11 are all arranged within the housing 5. The switch 10 is mounted on the housing 5.

[0027] See now Figures 4 to 6 The composite parabolic reflector cup 7 has a first parabolic surface 12 and N second parabolic surfaces 13 formed concave within the first parabolic surface 12. In this embodiment, N is 3. It should be understood that N can also be 1, 2, 4, 5, or other suitable values, which will not be listed here. Each pair of adjacent second parabolic surfaces 13 is separated from each other or their edges overlap. The corresponding focal point of each second parabolic surface 13 is located on the same plane as the focal point of the first parabolic surface 12. The top edge of each second parabolic surface 13 overlaps with the top edge of the first parabolic surface 12, and the bottom opening of each second parabolic surface 13 communicates with the bottom opening of the first parabolic surface 12.

[0028] Now return Figure 2 and Figure 3 The LED beads 8 are fixed on the substrate 9, and each LED bead 8 is arranged at the focal point of the corresponding first parabolic surface 12 or second parabolic surface 13. The first parabolic surface 12 and each second parabolic surface 13 are independent of each other within the composite parabolic surface reflector 7, ensuring that the light emitted by each LED bead 8 can be reflected by the corresponding parabolic surface, achieving precise light focusing based on the optical characteristics of the parabolic surface, while avoiding mutual interference of light.

[0029] The composite parabolic reflector 7 may comprise an aluminum alloy body and a coating covering the surfaces of the first parabolic surface 12 and each of the second parabolic surfaces 13. The aluminum alloy body can withstand the heat generated by the LED beads 8 during prolonged operation, ensuring structural stability. The added coating effectively improves light reflection efficiency, reduces light loss, and enhances the light-gathering effect.

[0030] See now Figure 6 and Figure 7 In this embodiment, the bottom of the composite parabolic reflector cup 7 has M positioning holes 14, where M is greater than or equal to 2. The substrate 9 is fixed with M positioning posts 15, each extending into a corresponding positioning hole 14. The cooperation between the positioning holes 14 and the positioning posts 15 ensures that each LED bead 8 is accurately positioned at the focal point of the corresponding first parabolic surface 12 or second parabolic surface 13.

[0031] Now return Figure 2 The lamp head assembly 1 also includes a heat sink 16 fixed inside the housing 5. The substrate 9, facing away from the bottom surface of the composite parabolic reflector 7, is attached to and fixed to the heat sink 16. An annular insulating pad 17 is arranged between the composite parabolic reflector 7 and the substrate 9. The LED beads 8 are located within the area surrounded by the annular insulating pad 17.

[0032] In this embodiment of the flashlight, the light emitted by each LED can be reflected by the corresponding parabolic surface, resulting in precise focusing while avoiding mutual interference of light. This allows for the creation of focused light spots of different shapes or colors (corresponding to the colors emitted by the LEDs), with clear edges and uniform intensity distribution.

[0033] Compared to designs using multiple independent reflectors, the composite parabolic reflector integrates multiple parabolic surfaces, significantly reducing material costs and effectively lowering the overall size and weight of the device, making it more advantageous for installation in space-constrained application scenarios.

Claims

1. A compound parabolic reflector cup, characterized by: The composite parabolic curved surface reflective cup is formed with a first parabolic curved surface and N second parabolic curved surfaces concavely formed in the first parabolic curved surface; each two adjacent second parabolic curved surfaces are separated from each other or have an edge overlap; the focal points of each second parabolic curved surface and the focal point of the first parabolic curved surface are located on the same plane; the top edge of each second parabolic curved surface overlaps the top edge of the first parabolic curved surface; and the bottom opening of each second parabolic curved surface communicates with the bottom opening of the first parabolic curved surface.

2. The compound parabolic reflector of claim 1, wherein: The composite parabolic curved surface reflective cup comprises an aluminum alloy body and a coating film covering the surface of the first parabolic curved surface and each second parabolic curved surface.

3. The compound parabolic reflector according to claim 1 or 2, characterized in that: The bottom of the composite parabolic curved surface reflective cup is formed with a positioning hole.

4. A flashlight characterized by: The lamp head assembly comprises a shell, the composite parabolic curved surface reflective cup, N+1 LED lamp beads and a substrate; the composite parabolic curved surface reflective cup, the LED lamp beads and the substrate are arranged in the shell; the LED lamp beads are fixed on the substrate, and each LED lamp bead is arranged at the focal point of the corresponding first parabolic curved surface or second parabolic curved surface.

5. The flashlight of claim 4, wherein: The bottom of the composite parabolic curved surface reflective cup is formed with M positioning holes, and M is greater than or equal to 2; the substrate is fixed with M positioning columns, and each positioning column extends into the corresponding positioning hole.

6. The flashlight of claim 4, wherein: The lamp head assembly further comprises a heat dissipation seat fixed in the shell, the substrate is attached to and fixed on the heat dissipation seat in the back of the bottom surface of the composite parabolic curved surface reflective cup; an annular insulating pad is arranged between the composite parabolic curved surface reflective cup and the substrate; and the LED lamp beads are located in the area surrounded by the annular insulating pad.

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