Lamp capable of emitting light with variable angles

Abstract

The invention relates to the technical field of lamps, and discloses a lamp with variable-angle emitted light, which comprises a lens, a circuit board and at least one light source, the circuit board is electrically connected with the light source, the lens comprises an involute-shaped light-transmitting part, the light-transmitting part at least has a first focal length and a second focal length in the width direction of the light-transmitting part, the first focal length is not equal to the second focal length, the light-transmitting part covers the light source, and the light-transmitting part covers the light source. And the light sources are distributed along the extending direction of the involute of the light-transmitting part. When the lens is rotated, the light source moves relative to the width direction of the light-transmitting part, so that the light source moves to different focal length positions of the light-transmitting part, the refraction effect of the light-transmitting part on the light source is changed, and the light emitting angle of the lamp is changed. According to the lamp with the angle-variable emitted light, when the angle of the emitted light is adjusted, the relative distance between the normal direction of the light-emitting surface of the light source and the lens does not need to be adjusted, circuit control is not needed either, and therefore operation is easy, and the structure is simple.

Description

Technical Field

[0001] The present invention relates to the technical field of lamps, and particularly to a lamp with a variable emission light angle. Background Art

[0002] At present, lamps with adjustable emission light angles mainly include two types: The first type adjusts the position of the light source relative to the focal point of the lens by adjusting the distance between the lens and the light source to achieve the adjustment of the emission light angle. For this type of lamp to achieve small-angle light distribution, the light source needs to be far from the lens, and part of the light cannot be transmitted through the lens, resulting in low light collection efficiency and thus low light output efficiency of the lamp; the lens is suspended, resulting in poor light control effect, stray light at large angles, high glare, and to achieve the up and down adjustment of the lens, the lens structure will be relatively complex, increasing the process difficulty and the corresponding product has a low dust and waterproof rating, and it cannot be used in some industrial places, with a narrow application range. The second type is that multiple lenses with different angles are integrated on the lens, and the circuit controls the switching to light different light source lens combinations to achieve the adjustment of the emission light angle. The corresponding light source circuit board layout of this type of lamp is cumbersome, and there is always part of the light source that is not always on, resulting in low light source utilization. Summary of the Invention

[0003] The present invention provides a lamp with a variable emission light angle to solve the technical problems of inconvenient adjustment of the emission light angle and complex operation of the lamp in the prior art.

[0004] To solve the above technical problems, the present invention provides a lamp with a variable emission light angle, including a lens, a circuit board, and at least one light source;

[0005] The circuit board is electrically connected to the light source. The lens includes an involute-shaped light-transmitting part. The light-transmitting part has at least a first focal length and a second focal length along its width direction, and the first focal length and the second focal length are not equal. The light-transmitting part covers the light source, and the light sources are distributed along the involute extension direction of the light-transmitting part.

[0006] Optionally, the lamp with a variable emission light angle further includes a radiator. The circuit board is arranged on the radiator, and the light source is located between the lens and the circuit board.

[0007] Optionally, an annular groove is provided on the side of the radiator close to the lens, and a first annular protrusion is provided on the side of the lens close to the radiator. The centers of the first annular protrusion, the annular groove, and the involute center of the light-transmitting part coincide, and the first annular protrusion is clamped in the annular groove.

[0008] Optionally, a sealing ring is embedded on the side of the first annular protrusion close to the radiator, and at least part of the sealing ring is located in the annular groove.

[0009] Optionally, a second annular protrusion is further provided on the side of the lens close to the radiator. The circuit board is annular, and an installation groove is formed in the middle of the circuit board. The circuit board is located between the first annular protrusion and the second annular protrusion. The second annular protrusion is clamped in the installation groove, and the centers of the installation groove, the second annular protrusion, the first annular protrusion, the annular groove, and the involute center of the light-transmitting portion coincide.

[0010] Optionally, the installation groove is a circular groove or an annular groove.

[0011] Optionally, the light fixture with variable emission angle of light further includes a buckle, and the buckle is provided on the radiator to limit the position of the lens.

[0012] Optionally, a clamping groove is further provided on the edge of the radiator, and the buckle is located in the clamping groove.

[0013] Optionally, the light fixture with variable emission angle of light further includes a connecting member. The buckle includes a first U-shaped clamping shaft and a second U-shaped clamping block. One end of the first U-shaped clamping shaft is hinged to the radiator through the connecting member, one end of the second U-shaped clamping block is hinged to the other end of the first U-shaped clamping shaft, and the other end of the second U-shaped clamping block can be clamped to the lens to limit the position of the lens.

[0014] Compared with the prior art, in the light fixture with variable emission angle of light of the present invention, the lens includes an involute-shaped light-transmitting portion, and at least has a first focal length and a second focal length along the width direction of the light-transmitting portion. When the lens rotates, the light source moves relative to the width direction of the light-transmitting portion, so that the light source moves to different focal length positions of the light-transmitting portion, which will cause the refraction effect of the light-transmitting portion on the light source to change, thereby causing the emission angle of the light of the light fixture to change. When adjusting the emission angle of the light of the light fixture of the present invention, it is not necessary to adjust the relative distance between the normal direction of the light-emitting surface of the light source and the lens, nor is it necessary to achieve it through circuit control. Therefore, the operation is simple and the structure is simple. Description of the Drawings

[0015] One or more embodiments are exemplarily illustrated by corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the drawings in the figures do not constitute a proportional limitation.

[0016] Figure 1 It is a schematic structural diagram of a light fixture with variable emission angle of light in an embodiment of the present invention;

[0017] Figure 2 It is a cross-sectional view of a light fixture with variable emission angle of light in an embodiment of the present invention;

[0018] Figure 3 Another cross-sectional view of the lamp with variable emission light angle in an embodiment of the present invention;

[0019] Figure 4 Exploded view of the lamp with variable emission light angle in an embodiment of the present invention. Detailed implementation manners

[0020] To facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right", "inner", "outer" and similar expressions used in this specification are only for the purpose of illustration.

[0021] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments, and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0022] In addition, the terms first, second, third, etc. in the specification and claims are only used for the purpose of distinguishing the description of the same technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features, nor necessarily describing the order or time sequence. The terms can be interchanged under appropriate circumstances. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features.

[0023] Similarly, the terms "fixed" and "connected" are also used in the specification and claims, and should not be understood as limited to direct connection. Therefore, the expression "device A is connected to device B" should not be limited to device A being directly connected to device B in the device or system. It means that there is a path between device A and device B, which can be a path including other devices or tools.

[0024] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] Please refer to Figures 1 to 4, an embodiment of the present invention provides a lamp 100 with variable emission light angle, comprising a lens 10, a circuit board 20 and at least one light source 30; the circuit board 20 is electrically connected to the light source 30, the lens 10 includes an involute-shaped light-transmitting part 12, the light-transmitting part 12 has at least a first focal length 122 and a second focal length 124 along its width direction, and the first focal length 122 and the second focal length 124 are not equal. The light-transmitting part 12 covers the light source 30, and the light source 30 is distributed along the involute extension direction of the light-transmitting part 12.

[0026] In the lamp 100 with variable emission light angle of this embodiment, the lens 10 includes an involute-shaped light-transmitting part 12, and has at least a first focal length 122 and a second focal length 124 along the width direction of the light-transmitting part 12. Among them, the width direction of the light-transmitting part 12 refers to the direction shown at A in the figure. It can be understood that the light-transmitting part 12 may further include a third focal length, a fourth focal length... etc. along the width direction of the light-transmitting part 12. When the lens 10 is rotated, the light source 30 moves relative to the width direction of the light-transmitting part 12, so that the light source 30 moves to different focal length positions of the light-transmitting part 12. For example, the light source 30 moves from the first focal length 122 to the second focal length 124 relative to the light-transmitting part 12, which will cause the refraction effect of the light-transmitting part 12 on the light source 30 to change, thereby causing the angle of the emitted light of the lamp 100 with variable emission light angle to change. For example, when the light source 30 is located at the first focal length 122 of the light-transmitting part 12, the emission light angle of the lamp 100 with variable emission light angle is 65°, and when the light source 30 is located at the second focal length 124 of the light-transmitting part 12, the emission light angle of the lamp 100 with variable emission light angle is 120°. When adjusting the angle of the emitted light of the lamp 100 with variable emission light angle in this embodiment, it is not necessary to adjust the relative distance between the normal direction of the light-emitting surface of the light source 30 and the lens 10, nor is it necessary to achieve it through circuit control. Therefore, the operation is simple and the structure is simple.

[0027] In one embodiment, the lamp 100 with variable emission light angle further includes a radiator 40, the circuit board 20 is arranged on the radiator 40, and the light source 30 is located between the lens 10 and the circuit board 20. The radiator 40 can dissipate heat from the circuit board 20. The circuit board 20 is an LED circuit board, and the light source 30 is an LED lamp bead.

[0028] In one embodiment, an annular groove 42 is provided on a surface of the radiator 40 close to the lens 10, and a first annular protrusion 14 is provided on a surface of the lens 10 close to the radiator 40. The center of the first annular protrusion 14, the center of the annular groove 42, and the involute center of the light-transmitting portion 12 coincide, and the first annular protrusion 14 is clamped in the annular groove 42. Through the cooperation of the first annular protrusion 14 and the annular groove 42, the lens 10 can rotate relative to the radiator 40 without deviating from the established track.

[0029] In one embodiment, a sealing ring 142 is embedded on a surface of the first annular protrusion 14 close to the radiator 40, and at least a part of the sealing ring 142 is located in the annular groove 42. The sealing ring 142 can better seal between the radiator 40 and the first annular protrusion 14 of the lens 10, has the function of sealing and waterproofing, and makes the relative rotation smoother. During adjustment, the height of the lens 10 in the normal direction of the light-emitting surface of the light source 30 remains unchanged, and the lens 10 can press the sealing ring 142 against the radiator 40, which can improve the protection level.

[0030] In one embodiment, a second annular protrusion 16 is further provided on a surface of the lens 10 close to the radiator 40. The circuit board 20 is annular, and an installation groove 44 is formed in the middle of the circuit board 20. The circuit board 20 is located between the first annular protrusion 14 and the second annular protrusion 16, and the second annular protrusion 16 is clamped in the installation groove 44, and the center of the installation groove 44, the center of the second annular protrusion 16, the center of the first annular protrusion 14, the center of the annular groove 42, and the involute center of the light-transmitting portion 12 coincide. The circuit board 20 has a limiting effect on the lens 10 and has a compact structure. Through the cooperation between the second annular protrusion 16 and the installation groove 44, it can further make the lens 10 rotate more smoothly relative to the radiator 40 and the circuit board 20 without deviating from the established track.

[0031] In one embodiment, the installation groove 44 is a circular groove or an annular groove.

[0032] In one embodiment, the lamp 100 with variable emission angle of light further includes a buckle 50, and the buckle 50 is provided on the radiator 40 to limit the lens 10. When it is necessary to rotate and adjust the lens 10, the locking limit of the lens 10 is released through the buckle 50. When it is not necessary to adjust the lens 10, when the lens 10 is locked on the radiator 40 through the buckle 50, the relative position between the lens 10 and the light source 30 will not change, ensuring the stability of the emitted light.

[0033] In one embodiment, a card slot 46 is further provided at the edge of the radiator 40, and the buckle 50 is located in the card slot 46. The card slot 46 is used to accommodate the buckle 50.

[0034] In one embodiment, the lamp 100 with variable emission light angle further includes a connecting member 60. The buckle 50 includes a first U-shaped card shaft 52 and a second U-shaped card block 54. One end of the first U-shaped card shaft 52 is hingedly connected to the radiator 40 through the connecting member 60. One end of the second U-shaped card block 54 is hingedly connected to the other end of the first U-shaped card shaft 52. The other end of the second U-shaped card block 54 can be buckled to the lens 10 to limit the lens 10. The connecting member 60 is a screw, which is connected to the radiator. One end of the first U-shaped card shaft 52 is hinged to the radiator 40. When it is necessary to release the locking of the lens 10, one end of the second U-shaped card block 54 is flipped away from the lens 10 relative to the other end of the first U-shaped card shaft 52. At this time, one end of the first U-shaped card shaft 52 can still continue to flip away from the lens 10 relative to the radiator 40. In this way, the buckle 50 releases the locking limit of the lens 10. At this time, the lens 10 can rotate relative to the radiator 40. When the lens 10 rotates to the in-place position, the first U-shaped card shaft 52 and the second U-shaped card block 54 are flipped in the reverse direction, so that the other end of the second U-shaped card block 54 catches the lens 10. Among them, the connecting member 60 is used to hinge and fix one end of the first U-shaped card shaft 52 to the radiator 40.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; under the idea of the present invention, the technical features in the above embodiments or different embodiments can also be combined, and the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above. For the sake of brevity, they are not provided in detail; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in each foregoing embodiment, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of each embodiment of the present invention.

Claims

1. A lamp that emits light at a variable angle, characterized in that: comprising a lens, a circuit board and at least one light source; The circuit board is electrically connected to the light source, the lens includes an involute-shaped light-transmitting portion, the light-transmitting portion has at least a first focal length and a second focal length along its width direction, and the first focal length and the second focal length are not equal, the light-transmitting portion covers the light source, and the light sources are distributed along the involute extension direction of the light-transmitting portion.

2. The lamp with variable light emission angle according to claim 1, characterized in that: A heat sink is also included, the circuit board is arranged on the heat sink, and the light source is located between the lens and the circuit board.

3. The lamp with variable light emission angle according to claim 2, characterized in that: A circular groove is provided on one side of the heat sink close to the lens, and a first circular protrusion is provided on one side of the lens close to the heat sink. The center of the first circular protrusion, the center of the circular groove, and the involute center of the light-transmitting portion coincide with each other, and the first circular protrusion is clamped in the circular groove.

4. The lamp with variable light emission angle according to claim 3, characterized in that: A sealing ring is embedded in a surface of the first annular protrusion close to the heat sink, and at least a portion of the sealing ring is located in the annular groove.

5. The lamp with variable light emission angle according to claim 3, characterized in that: A second annular protrusion is also provided on one side of the lens close to the heat sink. The circuit board is annular, and a mounting groove is formed in the middle of the circuit board. The circuit board is located between the first annular protrusion and the second annular protrusion. The second annular protrusion is clamped in the mounting groove, and the center of the mounting groove, the center of the second annular protrusion, the center of the first annular protrusion, the center of the annular groove, and the involute center of the light-transmitting portion coincide.

6. The lamp with variable light emission angle according to claim 5, characterized in that: The mounting groove is a circular groove or an annular groove.

7. The lamp with variable light emission angle according to claim 2, characterized in that: It also includes a buckle, which is arranged on the heat sink to limit the position of the lens.

8. The lamp with variable light emission angle according to claim 7, characterized in that: The edge of the heat sink is also provided with a slot, and the buckle is located in the slot.

9. The lamp with variable light emission angle according to claim 7, characterized in that: It also includes a connecting piece, and the buckle includes a first U-shaped clamping shaft and a second U-shaped clamping block. One end of the first U-shaped clamping shaft is hingedly connected to the radiator through the connecting piece, and one end of the second U-shaped clamping block is hingedly connected to the other end of the first U-shaped clamping shaft. The other end of the second U-shaped clamping block can be buckled and connected to the lens to limit the lens.

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