Table lamp

Abstract

The utility model provides a table lamp which comprises a lampshade, a lamp cover and a lamp holder. The light-emitting element is positioned in the accommodating space and is used for emitting illumination light; the lens is located on a light path of the illumination light and used for receiving and converging the illumination light and then emitting the illumination light; the adjusting assembly is arranged around the lens and movably connected with the lens, the adjusting assembly is further rotationally connected with the lampshade, and when the adjusting assembly rotates relative to the lampshade, the lens moves in the optical axis direction of the lens, so that the distance between the lens and the light-emitting element is changed.

Description

TECHNICAL FIELD

[0001] The present application relates to the lighting field, in particular to a desk lamp. BACKGROUND

[0002] Most of the desk lamps on the market have a large light emitting area, and the light emitting area is difficult to adjust. When users use such a desk lamp for lighting at night, the large light emitting area and wide lighting range can easily affect other people who do not need to be illuminated. CONTENT OF THE INVENTION

[0003] The present application provides a desk lamp, comprising:

[0004] A lampshade is formed with a containing space;

[0005] A light emitting element is located in the containing space and is used for emitting illumination light;

[0006] A lens is located on the light path of the illumination light and is used for receiving and converging the illumination light before emitting; and

[0007] An adjusting assembly is arranged around the lens and is movably connected with the lens, and the adjusting assembly is further rotatably connected with the lampshade. When the adjusting assembly rotates relative to the lampshade, the lens moves along the optical axis direction of the lens, so that the distance between the lens and the light emitting element changes.

[0008] In the above-mentioned desk lamp, when the adjusting assembly rotates relative to the lampshade, the lens can move along the optical axis direction of the lens in the adjusting assembly, so that the distance between the lens and the light emitting element changes. When the distance between the lens and the light emitting element changes, the light spot area of the illumination light emitted by the light emitting element and irradiated to the surface of the illuminated object through the lens also changes. Therefore, when the user uses the desk lamp, the light spot area of the illumination light emitted by the light emitting element in the desk lamp and irradiated to the surface of the illuminated object can be changed by rotating the adjusting assembly. That is, the user can increase or decrease the light spot area of the illumination light emitted by the light emitting element in the desk lamp and irradiated to the surface of the illuminated object according to the user's own needs, and the light spot area of the illumination light is reduced to avoid affecting other people in the vicinity when the desk lamp is used at night.

[0009] Further, the adjusting assembly comprises a first ring-shaped member, a second ring-shaped member and a first fixing member;

[0010] The first ring-shaped member surrounds and is connected to the periphery of the lens, the second ring-shaped member surrounds the periphery of the first ring-shaped member and is rotatably connected with the lampshade, and the first fixing member is fixedly connected to one end of the second ring-shaped member and is movably connected to the other end of the first ring-shaped member;

[0011] When the second ring rotates relative to the lampshade, the first fixing member moves in the direction of the optical axis of the lens, thereby driving the first ring and the lens to move in the direction of the optical axis of the lens.

[0012] Further, the first ring has a first inner surface facing the lens, the first inner surface is formed with a first groove, the edge of the lens is clamped in the first groove, and a first through hole is formed in the first ring;

[0013] The second ring has a second inner surface facing the first ring, the second inner surface is formed with a second groove, and the extension direction of the second groove is obliquely intersected with the direction of the optical axis of the lens.

[0014] One end of the first fixing member passes through the first through hole, and the other end is located in the second groove and can slide in the second groove.

[0015] Further, in the direction of the optical axis of the lens, the distance between the first end of the second groove and the edge of the second inner surface is less than the distance between the second end of the second groove and the same edge of the second inner surface, and the first end of the second groove extends to the other edge of the second inner surface in the direction of the optical axis of the lens.

[0016] Further, the adjusting assembly further comprises a third ring, the third ring is located between the first ring and the second ring and is fixedly connected with the lampshade, a through groove is formed in the third ring, and the extension direction of the through groove is the same as the direction of the optical axis of the lens.

[0017] Further, the adjusting assembly further comprises a second fixing member, the second fixing member is annular, is located in the first groove, and is used for fixing the edge of the lens in the first groove.

[0018] Further, the desk lamp further comprises a reflector, the reflector is located between the lens and the light emitting element, the reflector is formed with an opening, the area of the reflector which is not formed with the opening is used for reflecting the illumination light, and the opening is used for emitting the illumination light to the lens.

[0019] Further, the lampshade is formed with a columnar mounting portion protruding towards the accommodating space, and the light emitting element is connected to the top end of the mounting portion.

[0020] Further, the top end of the mounting portion is coated with a heat-conducting material, the desk lamp further comprises a heat dissipation member, the heat dissipation member is located on the side of the lampshade away from the adjusting assembly and is connected with the lampshade, and the lampshade and the heat dissipation member are both used for dissipating the heat generated by the light emitting element to the outside of the accommodating space.

[0021] Further, the lens comprises a light-out surface away from the light-emitting element, the light-out surface is curved towards a direction away from the light-emitting element corresponding to a central region of the light-emitting element, the central region is used for converging the illumination light. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective structural schematic view of the desk lamp in the embodiment of the present application.

[0023] Figure 2 It is an exploded structural schematic view of the desk lamp in the embodiment of the present application. Figure 1

[0024] Figure 3 It is a sectional structural schematic view along III-III section line in the embodiment of the present application. Figure 1

[0025] Figure 4 It is a perspective structural schematic view of the first ring-shaped part in the embodiment of the present application. Figure 2

[0026] Figure 5 It is a perspective structural schematic view of the second ring-shaped part in the embodiment of the present application. Figure 2

[0027] Figure 6 It is a perspective structural schematic view of the third ring-shaped part in the embodiment of the present application. Figure 2

[0028] MAIN ELEMENT SYMBOL EXPLANATION

[0029] Desk lamp: 100

[0030] Lampshade: 10

[0031] Housing space: 101

[0032] Second through hole: 102

[0033] Mounting part: 11

[0034] Light-emitting element: 20

[0035] Lens: 30

[0036] Light-in surface: 301

[0037] Light-out surface: 302

[0038] Central region: 31

[0039] Optical axis: 32

[0040] Adjustment assembly: 40

[0041] First ring-shaped part: 41

[0042] First inner surface: 411​​​​​

[0043] First recess: 412

[0044] First through hole: 413

[0045] Second ring: 42

[0046] Second inner surface: 421

[0047] Second recess: 422

[0048] First end: 422a

[0049] Second end: 422b

[0050] Third ring: 43

[0051] Through slot: 431

[0052] Side wall: 432

[0053] First fixing member 44

[0054] Second fixing member: 45

[0055] Reflective sheet: 50

[0056] Opening: 501

[0057] Heat dissipation member: 60

[0058] Lamp pole: 70

[0059] Screw: 80

[0060] The following detailed description will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0061] Please refer to Figure 1 and Figure 2 The desk lamp 100 of the embodiment of the present application comprises a lampshade 10, a light emitting element 20, a lens 30 and an adjusting assembly 40. The lampshade 10 is a hollow cylindrical structure as a whole, and encloses a containing space 101. The light emitting element 20 is located in the containing space 101, and is used for emitting illuminating light. The lens 30 is located on the light path of the illuminating light, and is used for receiving and converging the illuminating light before emitting. The adjusting assembly 40 is arranged around the lens 30, and is rotationally connected with the lampshade 10. When the adjusting assembly 40 rotates relative to the lampshade 10, the distance between the lens 30 and the light emitting element 20 changes, so as to realize focusing.

[0062] Please refer to Figure 2 and Figure 3The lampshade 10 is formed with a columnar mounting portion 11 protruding towards the accommodating space 101, and the top end of the mounting portion 11 is fixedly connected with the light emitting element 20. The mounting portion 11 is used for positioning and mounting the light emitting element 20, and keeps the light emitting element 20 in the center of the accommodating space 101 and not in contact with the inner wall of the lampshade 10.

[0063] In the embodiment, the desk lamp 100 further comprises a heat dissipation member 60, which is located on the side of the lampshade 10 away from the adjusting assembly 40 and is fixedly connected with the lampshade 10. The lampshade 10 and the heat dissipation member 60 are both made of a material (aluminum alloy or copper) with high heat conduction performance, so that the heat emitted by the light emitting element 20 is dissipated to the outside of the accommodating space 101 through the mounting portion 11, the lampshade 10 and the heat dissipation member 60 in sequence, thereby reducing the heat on the light emitting element 20. The top end of the mounting portion 11 is coated with a heat conductive material, which is conducive to faster conduction of the heat on the light emitting element 20 to the mounting portion 11, thereby improving the heat dissipation efficiency.

[0064] The lens 30 comprises an incident surface 301 facing the light emitting element 20 and an outgoing surface 302 away from the light emitting element 20. The incident surface 301 is a smooth curved surface for receiving and transmitting the illumination light. The outgoing surface 302 is curved towards the direction away from the light emitting element 20 corresponding to the central region 31 of the light emitting element 20, and the projection of the light emitting element 20 on the outgoing surface 302 falls within the central region 31, so that the illumination light emitted by the light emitting element 20 can be emitted after converging through the central region 31.

[0065] The desk lamp 100 further comprises a reflector 50 located between the lens 30 and the light emitting element 20. The reflector 50 is a sheet-like structure with a circular outer contour to adapt to the shape of the lampshade 10. The edge of the reflector 50 is fixedly connected with the inner wall of the lampshade 10. The reflector 50 is formed with a circular opening 501, and the reflector 50 covers the light emitting element 20 so that the light emitting element 20 is located in the opening 501, and the opening 501 is used for emitting the illumination light to the lens 30.

[0066] Part of the illumination light emitted by the light emitting element 20 may not successfully emit from the opening 501, but propagate towards the inner wall of the lampshade 10 and then reflect to the area of the reflector 50 where the opening 501 is not formed. In the embodiment, the area of the reflector 50 where the opening 501 is not formed is used for reflecting the part of the illumination light to the lens 30, so that more illumination light passes through the lens 30 to irradiate to the surface of the object, thereby improving the luminous brightness of the illumination light when irradiating to the surface of the object. When the desk lamp 100 does not comprise the reflector 50, the illumination light will be dispersed in all directions, and many illumination lights will be scattered to unnecessary places, resulting in low utilization rate of the illumination light. The reflector 50 can concentrate the light and reduce the waste of light. Therefore, in the embodiment, the illumination light is reflected by the reflector 50 to improve the overall illumination brightness of the desk lamp 100. In the embodiment, the color of the reflector 50 can be white, which is conducive to improving the reflection efficiency of the reflector 50.

[0067] The adjusting assembly 40 comprises a first ring 41, a second ring 42, a first fixing member 44 and a second fixing member 45.

[0068] Please refer to Figure 3 and Figure 4 The first ring 41 surrounds and connects to the periphery of the lens 30, and the first ring 41 has a first inner surface 411 facing the lens 30. The first inner surface 411 is formed with a first groove 412 extending along the circumferential direction of the first ring 41, and the lens 30 has a circular outer contour, and the edge of the lens 30 is clamped in the first groove 412.

[0069] Please refer to Figure 3 and Figure 5 The second ring 42 surrounds the periphery of the first ring 41, and one side of the second ring 42 is clamped and rotationally connected with the lampshade 10. The second ring 42 has a second inner surface 421 facing the first ring 41, and the second inner surface 421 is formed with a second groove 422, and the extending direction of the second groove 422 is obliquely intersected with the direction of the optical axis 32 of the lens 30. In the direction of the optical axis 32 of the lens 30, the distance between the first end 422a of the second groove 422 and the edge of the second inner surface 421 is less than the distance between the second end 422b of the second groove 422 and the same edge of the second inner surface 421. That is, in the direction of the optical axis 32 of the lens 30, there is a height difference between the first end 422a of the second groove 422 and the second end 422b of the second groove 422, and the first end 422a of the second groove 422 extends to the other edge of the second inner surface 421 in the direction of the optical axis 32 of the lens 30.

[0070] One end of the first fixing member 44 is located in the second groove 422 and can slide in the second groove 422, and a first through hole 413 is formed in the first ring 41, and the other end of the first fixing member 44 passes through the first through hole 413, thereby connecting the first ring 41 and the second ring 42. When the second ring 42 rotates relative to the lampshade 10 and the first fixing member 44 slides to the first end 422a of the second groove 422, the first fixing member 44 can slide to the edge of the second inner surface 421 along the second groove 422 and slide out of the second groove 422 from the edge. Since the other end of the first fixing member 44 passes through the first through hole 413 and is connected with the first ring 41, when the first fixing member 44 slides out of the second groove 422, the first fixing member 44 drives the first ring 41 to move away from the light-emitting element 20, and finally moves to the outside of the second ring 42. Therefore, by rotating the second ring 42 and sliding the first fixing member 44 to the first end 422a of the second groove 422, the first ring 41 can be taken out of the second ring 42, which facilitates the user to replace the first ring 41.

[0071] Please refer to Figure 2 and Figure 3 The second fixing member 45 is annular, located in the first groove 412, and used to fix the edge of the lens 30 in the first groove 412 to prevent the edge of the lens 30 from moving in the first groove 412. In the embodiment, the first annular member 41 is a glare shield, and the second fixing member 45 is a circlip.

[0072] When the second annular member 42 rotates relative to the lampshade 10, the first fixing member 44 slides along the second groove 422. Since the extension direction of the second groove 422 intersects the direction of the optical axis 32 of the lens 30, and there is a height difference between one end of the second groove 422 and the other end of the second groove 422 in the direction of the optical axis 32 of the lens 30, when the first fixing member 44 slides along the second groove 422, the first fixing member 44 will move in the direction of the optical axis 32 of the lens 30. Since the other end of the first fixing member 44 passes through the first through hole 413, when the first fixing member 44 moves in the direction of the optical axis 32 of the lens 30, the first fixing member 44 simultaneously drives the first annular member 41 and the lens 30 to move in the direction of the optical axis 32 of the lens 30, so that the distance between the lens 30 and the light emitting element 20 changes. The light emitting surface 302 of the lens 30 corresponding to the central region 31 of the light emitting element 20 is curved in a direction away from the light emitting element 20, that is, the part of the lens 30 corresponding to the light emitting element 20 has a convex lens structure. According to the refraction principle of light, when the distance between the light emitting element 20 and the illuminated object is unchanged, the greater the distance between the lens 30 and the light emitting element 20, the larger the light spot area when the illumination light emitted by the light emitting element 20 irradiates the surface of the illuminated object. The smaller the distance between the lens 30 and the light emitting element 20, the smaller the light spot area when the illumination light emitted by the light emitting element 20 irradiates the surface of the illuminated object.

[0073] Please refer to Figure 3 and Figure 6The adjusting assembly 40 further comprises a third ring 43 located between the first ring 41 and the second ring 42, and the third ring 43 is provided with a side wall 432 extending to the center of the third ring 43 on the side of the lampshade 10, and the side wall 432 is fixedly connected with the lampshade 10 by the screw 80. The edge of the reflector 50 is located on the side of the side wall 432 away from the lampshade 10, and is also fixedly connected with the lampshade 10 by the screw 80. The third ring 43 is provided with a through slot 431, and the extending direction of the through slot 431 is the same as the direction of the optical axis 32 of the lens 30. At this time, one end of the first fixing member 44 is located in the second groove 422, and the other end passes through the through slot 431 and the first through hole 413 in sequence, so that when the first ring 41 rotates relative to the lampshade 10, the first ring 41 can move in the direction of the optical axis 32 of the lens 30. And since the other end of the first fixing member 44 passes through the through slot 431 and the first through hole 413 in sequence, the first ring 41 is fixedly connected with the third ring 43, thereby preventing the first ring 41 from falling off.

[0074] Please refer to Figure 2 The lampshade 10 is provided with a second through hole 102. The desk lamp 100 further comprises a lamp rod 70, one end of the lamp rod 70 is fixedly connected with the lampshade 10 by passing through the second through hole 102. The other end of the lamp rod 70 can be connected with a base (not shown in the figure), so that the desk lamp 100 can be stably placed on an object (such as a table top). The power supply can be arranged in the base, and the wire can be arranged in the lamp rod 70, and the power supply and the light emitting element 20 are electrically connected through the wire, so that the power supply supplies power to the light emitting element 20.

[0075] In summary, when the user uses the desk lamp 100 of the embodiment of the present application, the user can change the light spot area of the illumination light irradiated to the surface of the illuminated object by rotating the second ring 42. That is, the user can increase or decrease the light spot area of the illumination light emitted by the light emitting element 20 in the desk lamp 100 when irradiated to the surface of the illuminated object by rotating, and the light spot area of the illumination light is reduced to avoid affecting other people nearby when the user uses the desk lamp 100 at night.

[0076] Those skilled in the art should understand that the above embodiments are only used to illustrate the present application, and are not used as a limitation to the present application, and as long as the above embodiments are made within the spirit and scope of the present application, the appropriate changes and variations made to the above embodiments fall within the scope of the present application.

Claims

1. A table lamp, characterized in that, include: The lampshade creates a space for accommodating the light fixture. A light-emitting element, located within the accommodating space, is used to emit illumination light; A lens, located in the optical path of the illumination light, is used to receive and converge the illumination light before it is emitted. as well as An adjustment component is arranged around the lens and movably connected to the lens. The adjustment component is also rotatably connected to the lampshade. When the adjustment component rotates relative to the lampshade, the lens moves along the optical axis of the lens, thereby changing the distance between the lens and the light-emitting element.

2. The desk lamp as described in claim 1, characterized in that, The adjustment assembly includes a first annular component, a second annular component, and a first fixing component; The first annular member surrounds and is connected to the periphery of the lens, the second annular member surrounds the periphery of the first annular member and is rotatably connected to the lampshade, and one end of the first fixing member is fixedly connected to the second annular member, while the other end is movably connected to the first annular member; When the second annular member rotates relative to the lampshade, the first fixing member moves in the optical axis direction of the lens, thereby causing the first annular member and the lens to move along the optical axis direction of the lens.

3. The desk lamp as described in claim 2, characterized in that, The first annular member has a first inner surface facing the lens, the first inner surface is formed with a first groove, the edge of the lens is engaged in the first groove, and the first annular member is provided with a first through hole; The second annular member has a second inner surface facing the first annular member, and a second groove is formed on the second inner surface. The extending direction of the second groove intersects obliquely with the optical axis direction of the lens. One end of the first fixing member passes through the first through hole, and the other end is located in the second groove and can slide in the second groove.

4. The desk lamp as described in claim 3, characterized in that, Along the optical axis of the lens, the distance between the first end of the second groove and the edge of the second inner surface is less than the distance between the second end of the second groove and the same edge of the second inner surface, and the first end of the second groove extends along the optical axis of the lens to the other edge of the second inner surface.

5. The desk lamp as described in claim 3, characterized in that, The adjustment assembly further includes a third annular component, which is located between the first annular component and the second annular component and is fixedly connected to the lampshade. The third annular component has a through groove, and the extension direction of the through groove is the same as the optical axis direction of the lens.

6. The desk lamp as described in claim 3, characterized in that, The adjustment assembly further includes a second fixing member, which is annular and located within the first groove, for fixing the edge of the lens within the first groove.

7. The desk lamp as described in claim 1, characterized in that, The desk lamp also includes a reflector located between the lens and the light-emitting element. The reflector has an opening, and the area of ​​the reflector without the opening is used to reflect the illumination light. The opening is used to emit the illumination light to the lens.

8. The desk lamp as described in claim 1, characterized in that, The lampshade has a columnar mounting portion that protrudes toward the accommodating space, and the light-emitting element is connected to the top of the mounting portion.

9. The desk lamp as described in claim 8, characterized in that, The top of the mounting part is coated with a thermally conductive material. The desk lamp also includes a heat sink, which is located on the side of the lampshade away from the adjustment component and connected to the lampshade. Both the lampshade and the heat sink are used to dissipate the heat emitted by the light-emitting element to the outside of the accommodating space.

10. The desk lamp as described in claim 1, characterized in that, The lens includes a light-emitting surface away from the light-emitting element, the light-emitting surface being bent in a direction away from the light-emitting element in relation to the central region of the light-emitting element, the central region being used to converge the illumination light.

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