LED table lamp
By designing the lens plate and reflector of the lens member, the two diffusion propagation of light is achieved, which solves the problems of limited lighting range and uneven illumination of the desk lamp, and improves lighting comfort and efficiency.
Patent Information
- Application Number
- CN202422353128.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The local lighting desk lamps on the market have limited lighting ranges for the desktop and are unevenly illuminated. The prior art increases the size or shape of the lamp head to solve this problem, resulting in heavy or dazzling table lamps.
The lens member design is adopted, including the first lens plate and the second lens plate. The cross-section of the lens plate is in a 'L' shape. A plurality of curved surface parts are provided on the light entering and exiting sides of the first lens plate. The two diffusion propagation of light is realized through the design of the curved surface part, and the mixed light exit of the reflector and the lens plate are combined to improve the illuminance and lighting range.
Without increasing the volume of the desk lamp, improve the illuminance and lighting range on the left and right sides of the desk to ensure uniform light distribution, avoid glare, and maintain the lightness and convenience of the desk lamp.
Smart Images
Figure CN223258011U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of lighting equipment, and in particular relates to an LED desk lamp. Background Art
[0002] When people are working or studying, they often use local lighting on their desks instead of using ceiling lights to illuminate the entire room. Therefore, people use local lighting lamps above the desks to illuminate the desks, such as using table lamps to illuminate the desks locally.
[0003] At present, local lighting lamps on the market (such as table lamps) illuminate the desktop in the vertical direction, with an illumination distribution form that is bright in the middle and gradually darkens toward the left and right sides of the desktop. The lighting range of the desktop is limited and the illumination is uneven. In order to improve the lighting range of the desktop and the illumination on the left and right sides of the desktop, one method of the related art is to extend the lamp head of the table lamp along the length of the desktop. Although this can improve the lighting range of the desktop and the illumination on the left and right sides of the desktop, it will increase the overall volume of the lamp, making the lamp bulky, and the cost of the table lamp will increase. In particular, for table lamps, the convenience and aesthetics are greatly reduced, affecting the user experience. Another method of the related art is to make the lamp head of the table lamp into an arc shape, but not to extend the lamp head. Although this can improve the illumination on the left and right sides of the desktop and thus increase the lighting range of the desktop, it will make it easy for the human eye to look directly at the light-emitting surface of the lamp head, causing glare and discomfort. Utility Model Content
[0004] The purpose of this application is to provide an LED desk lamp, aiming to solve the problem that local lighting desk lamps on the market have limited lighting range and uneven illumination on the desktop.
[0005] To achieve the above-mentioned purpose, the technical solution adopted in this application is: an LED desk lamp, including a lamp holder, which includes:
[0006] The housing is formed with a receiving space and a light outlet communicating with the receiving space;
[0007] An LED light source is disposed in the accommodation space;
[0008] The lens component includes a first lens plate and a second lens plate, wherein one side edge of the first lens plate is connected to one side edge of the second lens plate, so that the cross section of the lens component is L-shaped; the second lens plate is snap-fitted and installed in the light outlet, the first lens plate extends into the accommodation space, and the LED light source is located on a side of the first lens plate facing away from the second lens plate;
[0009] The first lens plate has a light emitting side surface and a wavy light incident side surface, the light incident side surface includes a plurality of first curved surface portions, the light emitting side surface includes a plurality of second curved surface portions, the first curved surface portions and the second curved surface portions both extend in a direction perpendicular to the intersection straight line between the first lens plate and the second lens plate, the plurality of first curved surface portions and the plurality of second curved surface portions are arranged in a one-to-one correspondence, the first curved surface portion is recessed toward the light emitting side surface, the first curved surface portion includes a bottom arc surface and a first side surface and a second side surface respectively located on both sides of the bottom arc surface, the first side surface and the second side surface are gradually expanded in a direction away from the light emitting side surface, and the second curved surface portion is convex in a direction away from the light incident side surface to be an arc surface.
[0010] In some embodiments of the present application, the second curved surface portion includes a plurality of arc surface portions, the plurality of arc surface portions are sequentially connected, and a circular arc transition is formed between two adjacent second curved surface portions, and the plurality of first curved surface portions are sequentially connected.
[0011] In some embodiments of the present application, the first side surface and the second side surface are both set to be planes or arc surfaces, the first side surface and the bottom arc surface are connected by an arc transition, the second side surface and the bottom arc surface are connected by an arc transition, and between two adjacent first curved surface portions, the first side surface of one first curved surface portion and the second side surface of the other first curved surface portion are connected by an arc transition.
[0012] In some embodiments of the present application, the second curved surface portion includes two connected arc surface portions, the two arc surface portions are symmetrically arranged relative to the symmetry plane, the two adjacent second curved surface portions are connected by an arc transition, the bottom arc surface is an arc surface symmetrical relative to the symmetry plane, the first side surface and the second side surface are symmetrically arranged relative to the symmetry plane, wherein the center line of the bottom arc surface and the intersecting straight line between the two arc surface portions are both located within the symmetry plane.
[0013] In some embodiments of the present application, the LED light source includes a substrate and multiple LED chips. The substrate is connected to the shell, and the multiple LED chips are arranged in a straight line on the side of the substrate facing the first lens plate, and the multiple LED chips are arranged one-to-one correspondingly to the multiple first curved surfaces.
[0014] In some embodiments of the present application, the lamp head further includes a reflector having a reflective surface. The reflector is disposed in the accommodating space, the reflective surface covers the first lens plate and the second lens plate, and the reflective surface is inclined from an edge of the second lens plate away from the first lens plate to an edge of the first lens plate away from the second lens plate.
[0015] In some embodiments of the present application, the first lens plate and the second lens plate are integrally formed, and the first lens plate and the second lens plate are perpendicular to each other.
[0016] In some embodiments of the present application, the first lens plate further has a top surface; the top surface is configured as an arcuate surface convex toward the direction away from the second lens plate; or, the top surface is configured as a plane, and an acute angle is formed between the top surface and the horizontal plane where the second lens plate is located.
[0017] In some embodiments of the present application, a plurality of light-transmitting protrusions are formed on a surface of the second lens plate facing away from the first lens plate, and the plurality of light-transmitting protrusions are distributed in an array.
[0018] In some embodiments of the present application, the LED desk lamp further includes a lamp holder and a lamp pole, one end of the lamp pole is connected to the lamp holder, and the other end of the lamp pole is connected to the housing.
[0019] This application has at least the following beneficial effects:
[0020] The LED desk lamp provided by the present application locally illuminates a desktop. The LED light source emits light onto the light-entering side of the first lens plate of the lens component, and the light is emitted from the light-emitting side of the first lens plate. The light emitted from the light-emitting side is irradiated onto the second lens plate of the lens component. The light is transmitted through the second lens plate and then emits light for illumination. On the first lens plate of the lens component of the lamp head of the LED desk lamp, the light-entering side includes a plurality of first curved surface portions, and the light-emitting side includes a plurality of second curved surface portions. The plurality of first curved surface portions and the plurality of second curved surface portions are arranged in a one-to-one correspondence. Since the first curved surface portion is recessed toward the light-emitting side, the first curved surface portion includes a bottom curved surface and a first side surface and a second side surface respectively located on both sides of the bottom curved surface. The first side surface and the second side surface are gradually expanded in a direction away from the light-emitting side. Therefore, when the LED light source emits light onto the light-entering side, the light is diffused and propagated toward the light-emitting side by the first curved surface portion. Since the second curved surface portion is convexly arranged as a curved surface in a direction away from the light-entering side, when the light is propagated to the light-emitting side, the light is diffused and propagated again by the second curved surface portion and irradiated out. In this way, the light is diffused and propagated twice by the first lens plate before being irradiated by the second lens plate for mixing to emit light. The light emitted by the light illuminates the left and right sides of the desktop, thereby increasing the illumination intensity on both sides of the desktop. This correspondingly increases the illumination range of the desktop, making the light distribution on the desktop more uniform and improving lighting comfort. Moreover, compared with the related art methods of increasing the lamp head of the desk lamp or making the lamp head of the desk lamp into an arc shape, the lamp head of the LED desk lamp provided by the present application not only increases the illumination intensity on both sides of the desktop and the illumination range of the contrast surface, but also does not increase the overall volume of the LED desk lamp. The LED desk lamp remains lightweight and convenient, and the human eye is not easily able to directly look at the light emitted by the second lens plate of the lamp head, which will not cause glare. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.
[0022] Figure 1 This is a schematic diagram of the assembly structure of the lamp holder of the LED desk lamp according to an embodiment of the present application;
[0023] Figure 2 for Figure 1 Schematic diagram of the LED desk lamp head Figure 1 ;
[0024] Figure 3 for Figure 1 Schematic diagram of the LED desk lamp head Figure 2 ;
[0025] Figure 4 for Figure 1 A schematic diagram of the internal structure of the LED desk lamp after the first shell of the lamp base is disassembled is shown;
[0026] Figure 5 for Figure 4 A magnified schematic diagram of point A in the middle;
[0027] Figure 6 for Figure 1 Schematic diagram of the structure of the lens component of the lamp head of the LED desk lamp Figure 1 ;
[0028] Figure 7 for Figure 6 A magnified schematic diagram of point B in the middle;
[0029] Figure 8 for Figure 1 Schematic diagram of the structure of the lens component of the lamp head of the LED desk lamp Figure 2 ;
[0030] Figure 9 for Figure 8 The enlarged schematic diagram of point C in the middle;
[0031] Figure 10 for Figure 1 A schematic top view of a lens component of a lamp holder of an LED desk lamp is shown;
[0032] Figure 11 for Figure 10 The enlarged schematic diagram of point D in the middle, wherein the arrows shown in the figure are schematic diagrams of the optical path of the light propagating between the corresponding first curved surface portion and the second curved surface portion;
[0033] Figure 12 for Figure 1 A schematic diagram of the optical path of light emitted by an LED light source in a lamp holder of an LED desk lamp through a lens component and a reflector is shown, wherein the arrows shown in the figure are schematic optical paths;
[0034] Figure 13 This is a schematic diagram of the assembly structure of the LED desk lamp according to an embodiment of the present application.
[0035] Among them, the reference numerals in the figures are:
[0036] 200, lamp holder;
[0037] 10. Housing; 110. First housing; 111. Connecting end; 120. Second housing; 11. Accommodating space; 12. Light outlet;
[0038] 20. LED light source; 21. substrate; 22. LED chip;
[0039] 30. Lens member; 31. First lens plate; 311. Light incident side surface; 312. Light exit side surface; 313. First curved surface portion; 315. Bottom curved surface; 316. First side surface; 317. Second side surface; 314. Second curved surface portion; 318. Curved surface portion; 319. Top surface; 32. Second lens plate; 321. Light incident surface; 322. Light-transmitting protrusion;
[0040] 40. reflector; 41. reflecting surface;
[0041] 51. Lamp holder; 52. Lamp pole;
[0042] 100. Symmetry plane. DETAILED DESCRIPTION
[0043] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.
[0044] In the description of this application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.
[0045] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first," "second," etc., may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.
[0046] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.
[0047] like Figures 1 to 10 As shown, the LED desk lamp provided in the embodiment of the present application includes a lamp holder 200. The lamp holder 200 includes a shell 10, an LED light source 20 and a lens component 30. The shell 10 includes a first shell 110 and a second shell 120. The first shell 110 and the second shell 120 cover each other to form a receiving space 11, and the second shell 120 is provided with a light outlet 12 connected to the receiving space 11. The LED light source 20 is arranged in the receiving space 11, that is, the LED light source 20 is connected to the second shell 120. The lens component 30 includes a first lens plate 31 and a second lens plate 32. One side edge of the first lens plate 31 is connected to one side edge of the second lens plate 32, so that the cross-section of the lens component 30 is "L"-shaped. The second lens plate 32 is embedded in the light outlet 12. The first lens plate 31 extends into the receiving space 11. The LED light source 20 is located on the side of the first lens plate 31 away from the second lens plate 32. In addition, the first lens plate 31 has a light-emitting side surface 312 and a wavy light-entering side surface 311, the light-entering side surface 311 includes a plurality of first curved surface portions 313, and the light-emitting side surface 312 includes a plurality of second curved surface portions 314. The first curved surface portions 313 and the second curved surface portions 314 both extend in a direction perpendicular to the intersection straight line between the first lens plate 31 and the second lens plate 32. The plurality of first curved surface portions 313 and the plurality of second curved surface portions 314 are arranged in a one-to-one correspondence, and the first curved surface portion 313 is recessed toward the light-emitting side surface 312. The first curved surface portion 313 includes a bottom arc surface 315 and a first side surface 316 and a second side surface 317 respectively located on both sides of the bottom arc surface 315. The first side surface 316 and the second side surface 317 are gradually expanded in a direction away from the light-emitting side surface 312, and the second curved surface portion 314 is convex and arranged as an arc surface in a direction away from the light-entering side surface 311.
[0048] It should be understood that the "L"-shaped cross-section of the lens component 30 is not limited to the vertical plane where the first lens plate 31 is located and the horizontal plane where the second lens plate 32 is located being perpendicular to each other. In fact, the vertical plane where the first lens plate 31 is located and the horizontal plane where the second lens plate 32 is located can be arranged to intersect at an acute angle.
[0049] The LED desk lamp provided in this application provides localized lighting for a desktop. The LED light source 20 emits light onto the light-entering side surface 311 of the first lens plate 31 of the lens member 30. The light then exits from the light-emitting side surface 312 of the first lens plate 31. The light emitted from the light-emitting side surface 312 then strikes the second lens plate 32 of the lens member 30. The light then propagates through the second lens plate 32 and then exits for illumination. On the first lens plate 31 of the lens member 30 of the lamp head 200 of the LED desk lamp, the light-entering side surface 311 includes a plurality of first curved surface portions 313, and the light-emitting side surface 312 includes a plurality of second curved surface portions 314. The plurality of first curved surface portions 313 and the plurality of second curved surface portions 314 are arranged in a one-to-one correspondence. Because the first curved surface portion 313 is recessed toward the light-emitting side surface 312 and includes a bottom curved surface 315 and first and second side surfaces 316 and 317 located on either side of the bottom curved surface 315, the first and second side surfaces 316 and 317 gradually widen away from the light-emitting side surface 312. Therefore, when light emitted by the LED light source 20 strikes the light-entering side surface 311, the light is diffused by the first curved surface portion 313 and propagates toward the light-emitting side surface 312. Furthermore, because the second curved surface portion 314 is convex and curved away from the light-entering side surface 311, when the light reaches the light-emitting side surface 312, it is diffused again by the second curved surface portion 314 and emitted outward. In this way, the light is diffused twice by the first lens plate 31, then illuminated by the second lens plate 32 for mixing and emitting light. The light emitted by the light provides more illumination to the left and right sides of the desktop, thereby increasing the illumination intensity on both sides of the desktop. This, in turn, increases the illumination range of the desktop and makes the light distribution on the desktop more uniform, improving lighting comfort. Moreover, compared with the related art which adopts the method of lengthening the lamp head of the desk lamp or making the lamp head of the desk lamp into an arc shape, the lamp head 200 of the LED desk lamp provided in the present application not only improves the illumination on the left and right sides of the desktop and the lighting range of the contrast surface, but also does not increase the overall volume of the LED desk lamp. The LED desk lamp still remains light and convenient, and it is not easy for the human eye to look directly at the output light of the second lens plate 32 of the lamp head 200, which will not cause glare.
[0050] like Figure 11As shown, the first side surface 316 and the second side surface 317 are both planes, the first side surface 316 and the bottom arc surface 315 are connected by an arc transition, and the second side surface 317 and the bottom arc surface 315 are connected by an arc transition. Since the first curved portion 313 extends in a direction perpendicular to the intersection line between the first lens plate 31 and the second lens plate 32, as shown in FIG. Figure 11 As shown, when the light emitted by the LED light source 20 hits the first side surface 316 and the second side surface 317, the bottom curved surface 315, the first side surface 316 and the second side surface 317 deflect the light along the length direction of the lens component 30, that is, the light spreads left and right toward the second curved surface portion 314, achieving the first deflection and propagation of the light. Figure 5 、 Figure 7 、 Figure 9 and Figure 11 Between two adjacent first curved surface portions 313, a first side surface 316 of one first curved surface portion 313 is connected to a second side surface 317 of the other first curved surface portion 313 by an arc transition. Thus, the arc transition between the two adjacent first curved surface portions 313 deflects the light emitted by the LED light source 20 toward the second curved surface portion 314, thereby improving light utilization efficiency and preventing the light that strikes the arc transition between the two adjacent first curved surface portions 313 from being wasted.
[0051] In some other embodiments of the present application, the first side surface 316 and the second side surface 317 may also be configured as arc surfaces, and a circular arc transition connection is formed between the first side surface 316 and the bottom arc surface 315, and a circular arc transition connection is also formed between the second side surface 317 and the bottom arc surface 315. Furthermore, in this embodiment, between two adjacent first curved surface portions 313, a circular arc transition connection is formed between the first side surface 316 of one first curved surface portion 313 and the second side surface 317 of the other first curved surface portion 313.
[0052] like Figure 5 and Figure 11 As shown, in the embodiment of the present application, the second curved surface portion 314 includes two connected arc surface portions 318, and the two arc surface portions 318 are symmetrically arranged relative to the symmetry plane 100. Moreover, since the second curved surface portion 314 also extends in a direction perpendicular to the intersection line between the first lens plate 31 and the second lens plate 32, and since the second curved surface portion 314 is convex in a direction away from the light incident side surface 311 and is arranged as an arc surface, as shown in FIG. Figure 11As shown, when the light deflected and propagated by the first curved surface portion 313 strikes the second curved surface portion 314, the second curved surface portion 314 deflects the light along the length of the lens member 30, causing the light to diffuse left and right again toward the second lens plate 32. Furthermore, the two curved surface portions 318 relative to the plane of symmetry 100 deflect the incident light, respectively, resulting in a wider diffusion range for the left and right diffusion of the light than when there is only one curved surface portion 318. The light then strikes the second lens plate 32, where it is mixed and illuminated. Furthermore, the arc transitions between adjacent second curved surface portions 314, and the arc transitions between adjacent first curved surface portions 313, minimize stress concentration points on the first lens plate 31. This reduces the likelihood of cracking of the first lens plate 31 due to stress concentration points during both the production and assembly of the lens member 30, thereby improving product yield.
[0053] In some other embodiments of the present application, the second curved surface portion 314 may include two arcuate portions 318 that are asymmetrically configured, with the curvature of the two arcuate portions 318 determined based on the difference in the amount of light diffusing left and right by the two arcuate portions 318. Furthermore, the bottom arcuate portion 315 may also be asymmetrically configured, with the curvature of the bottom arcuate portion 315 similarly determined based on the difference in the amount of light diffusing left and right by the bottom arcuate portion 315. Furthermore, the first side surface 316 and the second side surface 317 may also be asymmetrically configured, with their inclination relative to the length of the first lens plate 31 determined based on the propagation path of the diffusing light, thereby ensuring that more light is diverted to the two arcuate portions 318.
[0054] like Figure 11As shown, the bottom arc surface 315 is a symmetrical arc surface relative to the symmetry plane 100, and the first side surface 316 and the second side surface 317 are symmetrically arranged relative to the symmetry plane 100. The midline of the bottom arc surface 315 and the intersection line between the two arc surface portions 318 are both located within the symmetry plane 100. That is, in the corresponding first curved surface portion 313 and the second curved surface portion 314, the first side surface 316 and the half of the bottom arc surface 315 connected to the first side surface 316 are arranged opposite one of the arc surface portions 318, and the second side surface 317 and the other half of the bottom arc surface 315 connected to the second side surface 317 are arranged opposite the other arc surface portion 318. In this way, the first side surface 316, the half of the bottom curved surface 315 connected to the first side surface 316, and one of the curved surface portions 318 opposite to it deflect and diffuse the light, and the second side surface 317, the other half of the bottom curved surface 315 connected to the second side surface 317, and the other curved surface portion 318 opposite to it deflect and diffuse the light, thereby expanding the range of the light diffused left and right to the second lens plate 32, thereby expanding the illumination range of the desktop after the second lens plate 32 mixes the light.
[0055] In the lamp head 200 of the LED desk lamp provided in some embodiments of the present application, in the first lens plate 31 of the lens member 30, the second curved surface portion 314 includes a plurality of curved surface portions 318, for example, three or more curved surface portions 318, and the plurality of curved surface portions 318 are connected in sequence. In this embodiment, taking the second curved surface portion 314 as an example, the light deflected and diffused by the first curved surface portion 313 is deflected and diffused again by the three curved surface portions 318, thereby expanding the range of light diffused to the left and right to the second lens plate 32, thereby expanding the illumination range of the desktop after the second lens plate 32 mixes the light. The arc transition between two adjacent second curved surface portions 314 is connected, and the plurality of first curved surface portions 313 are connected in sequence.
[0056] like Figure 2 and Figure 5 As shown, the LED light source 20 includes a substrate 21 and a plurality of LED chips 22. The substrate 21 is mounted and connected to the housing 10. The plurality of LED chips 22 are arranged in a straight line on one side of the substrate 21 facing the first lens plate 31. Figure 5 As shown, the multiple LED chips 22 are arranged in a one-to-one correspondence with the multiple first curved surface portions 313. In this way, the light emitted by each LED chip 22 is deflected and diffused by the corresponding first curved surface portion 313 and the corresponding second curved surface portion 314 and propagates to the second lens plate 32. Furthermore, in the assembly configuration in which the multiple LED chips 22 are arranged in a one-to-one correspondence with the multiple first curved surface portions 313, the light emitted by the LED chips 22 is reduced from irradiating the transition arc position between two adjacent first curved surface portions 313, thereby improving the efficiency of deflecting and diffusing the light.
[0057] like Figure 5 、 Figure 7 and Figure 9 As shown, the first lens plate 31 also has a top surface 319. In some embodiments of the present application, the top surface 319 is configured as an arcuate surface convex in a direction away from the second lens plate 32. Alternatively, in other embodiments of the present application, the top surface 319 is configured as a plane, and the top surface 319 is configured to form an acute angle with the horizontal plane where the second lens plate 32 is located. After the light emitted by the LED light source 20 is deflected and diffused by the first curved surface portion 313, a portion of the light is irradiated onto the top surface 319. At this time, the top surface 319 in the form of an arcuate surface or the top surface 319 in the form of an inclined plane can reflect this portion of light and re-reflect this portion of light toward the second curved surface portion 314 for deflection and diffusion to propagate to the second lens plate 32, thereby making full use of this portion of light and improving light utilization efficiency.
[0058] In the desk lamp of the embodiment of the present application, the first lens plate 31 and the second lens plate 32 are integrally formed, that is, the lens component 30 is integrally injection molded using an injection molding process. In addition, the first lens plate 31 and the second lens plate 32 are perpendicular to each other. Furthermore, the thickness of the first lens plate 31 gradually increases in the direction from the second lens plate 32 to the top surface 319, and the extension direction of the first curved surface portion 313 is perpendicular to the horizontal plane where the second lens plate 32 is located (that is, the extension direction of the second curved surface portion 314 is set at an acute angle to the horizontal plane where the second lens plate 32 is located), so that the light emitted from the light-emitting side surface 312 is smoothly irradiated to the light-entering surface 321 of the second lens plate 32. Among them, the light-entering surface 321 of the second lens plate 32 can be a plane or a curved surface.
[0059] The light emitted by the LED light source 20 is deflected and diffused twice by the first lens plate 31 and then irradiated to the second lens plate 32. The second lens plate 32 is used to mix the irradiated light and then emit light for illumination. Figure 1 As shown, a plurality of light-transmitting protrusions 322 are formed on the surface of the second lens plate 32 facing away from the first lens plate 31. The plurality of light-transmitting protrusions 322 are distributed in an array. The light-transmitting protrusions 322 perform appropriate optical adjustments on the light so that the light is mixed and then emitted for illumination.
[0060] Further, such as Figure 2 、 Figure 3 and Figure 12As shown, the lamp head 200 of the desk lamp further includes a reflector 40, which has a reflective surface 41. The reflector 40 is disposed in the accommodating space 11, and the reflective surface 41 covers the first lens plate 31 and the second lens plate 32. In addition, the reflective surface 41 is inclined from the edge of the second lens plate 32 away from the first lens plate 31 to the edge of the first lens plate 31 away from the second lens plate 32. Figure 12 As shown, the light emitted by the LED light source 20 is deflected and diffused twice by the first lens plate 31 before being emitted from the light-emitting side surface 312. A portion of the light deflected and diffused from the light-emitting side surface 312 is directly emitted toward the second lens plate 32, while another portion of the light is emitted upward toward the reflective surface 41 and reflected downward by the reflective surface 41 toward the second lens plate 32. The two portions of light are then mixed by the second lens plate 32 and emitted as light. In this way, the reflector 40 can more fully utilize the light emitted by the LED light source 20, improving light utilization efficiency.
[0061] like Figure 13 As shown, the LED desk lamp provided in the embodiment of the present application also includes a lamp holder 51 and a lamp pole 52. One end of the lamp pole 52 is connected to the lamp holder 51. A connecting end 111 is formed on the second shell 120. The other end of the lamp pole 52 is connected to the connecting end 111. In addition, the lamp pole 52 is a multi-section foldable lamp pole. By adjusting the relative angles of two adjacent sections of the pole body, the relative position between the lamp head 200 and the desktop can be adjusted to adapt to the usage requirements of different users for the lamp head 200 during the lighting process. The lamp holder 51 is placed on the desktop to provide a stable placement base for the entire LED desk lamp, and the lamp pole 52 provides a suitable support height for the lamp head 200, which is convenient for users to adjust and enhances the user experience.
[0062] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.
Claims
1. An LED desk lamp, comprising a lamp holder (200), wherein the lamp holder (200) comprises: A housing (10) is formed with a receiving space (11) and a light outlet (12) communicating with the receiving space (11); An LED light source (20) is disposed in the accommodating space (11); A lens component (30) comprises a first lens plate (31) and a second lens plate (32), wherein one side edge of the first lens plate (31) is connected to one side edge of the second lens plate (32), so that the cross section of the lens component (30) is L-shaped; the second lens plate (32) is embedded in the light outlet (12), the first lens plate (31) extends into the accommodating space (11), and the LED light source (20) is located on a side of the first lens plate (31) facing away from the second lens plate (32); It is characterized by: The first lens plate (31) has a light-emitting side surface (312) and a wavy light-entering side surface (311), the light-entering side surface (311) includes a plurality of first curved surface portions (313), the light-emitting side surface (312) includes a plurality of second curved surface portions (314), the first curved surface portions (313) and the second curved surface portions (314) both extend in a direction perpendicular to a straight line of intersection between the first lens plate (31) and the second lens plate (32), and the plurality of first curved surface portions (313) and the plurality of second curved surface portions (314) are aligned with each other. 4) are arranged in a one-to-one correspondence, the first curved portion (313) is recessed toward the light-emitting side surface (312), the first curved portion (313) includes a bottom arc surface (315) and a first side surface (316) and a second side surface (317) respectively located on both sides of the bottom arc surface (315), the first side surface (316) and the second side surface (317) are gradually expanded in a direction away from the light-emitting side surface (312), and the second curved portion (314) is convex in a direction away from the light-entering side surface (311) and is arranged as an arc surface.
2. The LED desk lamp according to claim 1, characterized in that: The second curved surface portion (314) includes a plurality of arc surface portions (318), the plurality of arc surface portions (318) are connected in sequence, two adjacent second curved surface portions (314) are connected by arc transition, and the plurality of first curved surface portions (313) are connected in sequence.
3. The LED desk lamp according to claim 1, characterized in that: The first side surface (316) and the second side surface (317) are both configured as planes or arc surfaces; the first side surface (316) and the bottom arc surface (315) are connected in a circular arc transition; the second side surface (317) and the bottom arc surface (315) are connected in a circular arc transition; and, between two adjacent first curved surface portions (313), the first side surface (316) of one first curved surface portion (313) and the second side surface (317) of the other first curved surface portion (313) are connected in a circular arc transition.
4. The LED desk lamp according to claim 3, characterized in that: The second curved surface portion (314) includes two connected arc surface portions (318), the two arc surface portions (318) are symmetrically arranged relative to the symmetry plane (100), and the two adjacent second curved surface portions (314) are connected by a circular arc transition. The bottom arc surface (315) is an arc surface symmetrical with respect to the symmetry plane (100), and the first side surface (316) and the second side surface (317) are symmetrically arranged relative to the symmetry plane (100), wherein the center line of the bottom arc surface (315) and the intersection line between the two arc surface portions (318) are both located within the symmetry plane (100).
5. The LED desk lamp according to claim 4, characterized in that: The LED light source (20) comprises a substrate (21) and a plurality of LED chips (22); the substrate (21) is connected to the housing (10); the plurality of LED chips (22) are arranged in a straight line on a side of the substrate (21) facing the first lens plate (31); and the plurality of LED chips (22) are arranged in a one-to-one correspondence with the plurality of first curved surface portions (313).
6. The LED desk lamp according to any one of claims 1 to 5, characterized in that: The lamp holder (200) further comprises a reflector (40), the reflector (40) having a reflecting surface (41), the reflector (40) being arranged in the accommodating space (11), the reflecting surface (41) covering the first lens plate (31) and the second lens plate (32), and the reflecting surface (41) being arranged obliquely from an edge of the second lens plate (32) away from the first lens plate (31) to an edge of the first lens plate (31) away from the second lens plate (32).
7. The LED desk lamp according to claim 6, characterized in that: The first lens plate (31) and the second lens plate (32) are integrally formed, and the first lens plate (31) and the second lens plate (32) are perpendicular to each other.
8. The LED desk lamp according to claim 7, characterized in that: The first lens plate (31) also has a top surface (319); The top surface (319) is configured as an arc-shaped surface convex in a direction away from the second lens plate (32); Alternatively, the top surface (319) is set as a plane, and an acute angle is formed between the top surface (319) and a horizontal plane where the second lens plate (32) is located.
9. The LED desk lamp according to claim 7, characterized in that: A plurality of light-transmitting protrusions (322) are formed on a surface of the second lens plate (32) facing away from the first lens plate (31), and the plurality of light-transmitting protrusions (322) are distributed in an array.
10. The LED desk lamp according to claim 7, characterized in that: The LED desk lamp further comprises a lamp holder (51) and a lamp pole (52), one end of the lamp pole (52) is connected to the lamp holder (51), and the other end of the lamp pole (52) is connected to the housing (10).