Energy-saving table lamp with double-control light source capable of expanding illumination range

Abstract

The invention relates to an energy-saving table lamp with a double-control light source for expanding the illumination range, and belongs to the technical field of illumination. Comprising a lamp body and a lampshade, a bulb, a first reflecting assembly and a second reflecting assembly are arranged in the lamp body, and an adjusting set is arranged on the lampshade; the second light reflecting assembly comprises an elastic lens, a first supporting plate is arranged on the lampshade, and the elastic lens shrinks and unfolds in the lampshade. The adjusting assembly comprises an adjusting knob and a first supporting column, a first electromagnet is arranged in the first supporting column, a second magnet is arranged at the top of the first light reflecting assembly, and the adjusting knob adjusts the brightness of the bulb and the magnetic field of the first electromagnet. Dynamic matching of the illumination range and the brightness is achieved, the illumination requirements of different scenes are met, and invalid energy consumption is avoided. Uniform and stable illumination is ensured by linkage of the first and second reflecting assemblies and application of the reflecting prism. The heat dissipation channel and the air bag are designed to optimize heat dissipation performance, delay temperature rise and protect the bulb.

Description

Technical Field

[0001] The invention relates to an energy-saving desk lamp with dual-controlled light sources to expand the illumination range, belonging to the technical field of lighting. Background Art

[0002] Desk lamps, as basic lighting devices widely used in scenarios such as reading and office work, have the core function of providing adjustable localized illumination for specific areas. Existing desk lamps typically adjust the illumination angle through mechanical rotation of the lamp head and rely on dimming circuits to change the light source brightness. However, the optical structure design of traditional desk lamps has fundamental limitations: the illumination range is determined by the fixed reflector and lamp head position. Users can only change the illumination direction by physically rotating the lamp head or adjust the brightness through circuits, without the ability to dynamically adjust the matching relationship between the illumination range and brightness.

[0003] The illumination range of traditional desk lamps is limited by a fixed structure. When users require concentrated illumination in a small area (such as reading a piece of text), the light source still outputs light at a fixed divergence angle. Even when the brightness is lowered, the reflective structure maintains its original large divergence range, resulting in excessive light intensity per unit area and unnecessary energy consumption. Conversely, when the illumination range needs to be expanded (such as overall desktop lighting), the fixed reflector cannot adjust the concentration level synchronously. The brightness in the central area drops sharply due to excessive light divergence, forcing users to increase the overall brightness to compensate for the lack of central brightness, further increasing energy consumption. In addition, prolonged use of strong light or unevenly distributed lighting can easily cause visual fatigue and even vision damage. Summary of the Invention

[0004] The present invention provides an energy-saving desk lamp with a dual-control light source to expand the illumination range, so as to solve the problems of low luminous flux utilization and uneven light distribution in the prior art.

[0005] The present invention provides an energy-saving desk lamp with a dual-control light source to expand the illumination range, which includes a lamp body and a lampshade. The lamp body is provided with a light bulb, a first reflective component and a second reflective component that match the light bulb. The lampshade is provided with an adjustment component to drive the light bulb and the first reflective component to be adjusted within the lampshade.

[0006] The first reflective component and the second reflective component are synchronously adjusted by a connecting component. The second reflective component includes an elastic lens. The lampshade is provided with a first supporting plate that matches the second reflective component. The second reflective component slides along the first supporting plate through the connecting component to achieve the contraction and expansion of the elastic lens.

[0007] The adjustment assembly includes an adjustment knob and a first support column. The top of the first reflective assembly is slidably connected to the first support column. A first electromagnet is provided in the first support column. A second magnet matching the first electromagnet is provided on the top of the first reflective assembly. The adjustment knob adjusts the brightness of the bulb and the magnitude of the magnetic field of the first electromagnet. The lamp body is provided with a relay matching the first electromagnet.

[0008] The first reflective assembly includes a first reflective plate and a first reflective structure. The first reflective plate and the first reflective structure are slidably connected, and the bottom of the first reflective structure is hinged to the lampshade.

[0009] Preferably, a variable resistor is also provided on the lamp body, and the variable resistor is connected to the adjustment component. The brightness of the bulb and the size of the magnetic field of the first electromagnet are adjusted by adjusting the knob. The first electromagnet is fixedly connected to the top of the first support column, and the first reflective component is slidably connected to the first support column. The bottom of the first support column is provided with a first magnet that repels the magnetic pole of the second magnet.

[0010] Preferably, the first reflective component is trumpet-shaped, with the end of the first reflective component close to the bulb being a large-mouthed end, and the bulb and the top of the first reflective component being fixedly connected by a second support column, and the second support column is coaxial with the first reflective component and fixedly connected to the top of the first reflective component, thereby driving the bulb to move synchronously through the first reflective component.

[0011] Preferably, the second reflective assembly also includes a support frame, which is multiple and distributed in a circle around the light bulb. The two elastic lenses are located between the multiple support frames and are horizontally arranged up and down. The multiple support frames are fixedly connected to the outer contour of the elastic lens, and the elastic lens can be deformed according to the extrusion of the multiple support frames.

[0012] Preferably, the bottom of the inner wall of the first reflective plate contacts the outer wall of the first reflective structure, the first reflective plate and the first reflective structure are both trumpet-shaped, the lampshade is provided with a limiting ring corresponding to the first reflective structure, and the bottom of the first reflective structure is hinged to the limiting ring.

[0013] Preferably, the first reflective structure includes a plurality of second reflective plates, which are distributed in a circle around the center of the first reflective plate, and there is a gap between two adjacent second reflective plates. A sliding block slidably connected to a limiting ring is provided at the bottom of the second reflective plate, and the sliding block is hinged to the second reflective plate and is provided with a matching torsion spring.

[0014] Preferably, a plurality of reflecting prisms matching the light bulb are provided on the inner side of the first reflecting plate and the first reflecting structure, and two adjacent reflecting prisms are flexibly connected. The reflecting prisms are fixedly connected to the corresponding first reflecting plate and the first reflecting structure, and the reflecting prisms can flexibly change when the first reflecting plate and the first reflecting structure are deformed.

[0015] Preferably, the first reflective plate and the first reflective structure are provided with a plurality of heat dissipation channels, and the plurality of heat dissipation channels are bent in a serpentine shape and are linearly arranged in a circular pattern on the first reflective plate and the first reflective structure.

[0016] Preferably, the heat dissipation channel includes multiple exhaust channels and air intake channels, and multiple exhaust channels are connected to the air intake channels at any time. The diameter of the exhaust channel is larger than the diameter of the air intake channel. The exhaust channel absorbs heat in the lampshade and discharges it through the exhaust channel.

[0017] Preferably, an airbag is provided in the exhaust channel, and a plurality of airbags are arranged along the inner wall of the exhaust channel. The airbag is an elastic airbag, and a phase change material is provided in the airbag, and the phase change material absorbs heat to change phase.

[0018] Beneficial effects of the present invention:

[0019] The present invention provides an energy-saving desk lamp with a dual-control light source to expand the illumination range. The dual-control light source design realizes dynamic matching of the illumination range and brightness. Users can flexibly adjust the illumination range and brightness by rotating the adjustment knob according to actual needs, which not only meets the lighting needs in different scenarios, but also avoids ineffective energy consumption and improves the utilization rate of effective luminous flux. When low brightness is required, the reflective component gathers light, concentrates the illumination area, and reduces energy waste; when high brightness is required, the illumination range is expanded to avoid local overexposure, and the energy-saving effect is also achieved. The linkage of the first reflective component and the second reflective component, as well as the mutual cooperation of the reflective prism, ensure the uniformity and stability of the illumination. The reflective prism can flexibly change when the reflective component is deformed, maintain the continuity of the reflective surface, avoid reflection blind spots, and form a multi-level reflection effect of central focusing + peripheral diffusion. The design of the first reflective component and the second reflective component enables the illumination range to be flexibly adjusted as needed. By rotating the adjustment knob, the first and second reflective components move and deform, expanding or narrowing the illumination range to meet the lighting needs of different scenarios. The reflective components are equipped with heat dissipation channels, including air intake and exhaust channels, and an airbag filled with phase change material, effectively improving the heat dissipation performance of the desk lamp. The heat dissipation channel's serpentine design and circular linear arrangement increase the contact area with the air and extend the heat dissipation path. The phase change material in the airbag absorbs heat as the temperature rises, slowing the temperature rise and protecting the bulb from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an energy-saving desk lamp with dual-control light sources to expand the lighting range of the present invention.

[0021] Figure 2 This is a schematic structural diagram from another angle of an energy-saving desk lamp with a dual-control light source to expand the lighting range of the present invention.

[0022] Figure 3 The present invention is a schematic diagram of the cross-sectional structure of a lampshade of an energy-saving desk lamp with a dual-control light source to expand the illumination range.

[0023] Figure 4 This is a schematic structural diagram of a lampshade of an energy-saving desk lamp with a dual-control light source to expand the illumination range, viewed from another angle.

[0024] Figure 5 This is a schematic structural diagram of the lampshade portion of an energy-saving desk lamp with a dual-control light source to expand the illumination range of the present invention.

[0025] Figure 6 This is a structural schematic diagram of another part of the lampshade of an energy-saving desk lamp with a dual-control light source to expand the illumination range of the present invention.

[0026] Figure 7 This is a schematic structural diagram of the first reflective component of an energy-saving desk lamp with a dual-control light source to expand the illumination range of the present invention.

[0027] Figure 8 This is a schematic structural diagram of the second reflective component of an energy-saving desk lamp with a dual-controlled light source to expand the illumination range of the present invention.

[0028] Figure 9 This is a front view schematic diagram of the first reflective component of an energy-saving desk lamp with dual-control light sources to expand the lighting range of the present invention.

[0029] Figure 10 This is a schematic exploded view of the first reflective component of an energy-saving desk lamp with a dual-controlled light source to expand the illumination range of the present invention.

[0030] Figure 11 The present invention is a schematic cross-sectional view of the first reflector of an energy-saving desk lamp with a dual-controllable light source to expand the illumination range.

[0031] Figure 12 This is a partially enlarged structural diagram of the first reflector of an energy-saving desk lamp with a dual-control light source to expand the illumination range of the present invention.

[0032] In the figure: 1. lamp body, 2. lampshade, 21. adjustment assembly, 211. adjustment knob, 212. first support column, 213. first electromagnet, 214. second support column, 215. first magnet, 216. second magnet, 22. limiting ring, 23. first support plate, 24. heat dissipation hole, 3. bulb, 4. first reflective assembly, 41. first reflective plate, 42. first reflective structure, 43. reflecting prism, 44. heat dissipation channel, 441. exhaust channel, 4411. airbag, 442. air intake channel, 5. second reflective assembly, 51. support frame, 52. elastic lens, 53. second support plate, 6. connecting assembly, 61. connecting rod. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] The present invention provides an energy-saving desk lamp with a dual-control light source to expand the illumination range, comprising a lamp body 1 and a lampshade 2. The lampshade 2 is fixedly connected to the lamp body 1. A light bulb 3, a first reflective assembly 4 corresponding to the light bulb 3, and a second reflective assembly 5 are arranged in the lampshade 2. An adjustment assembly 21 connected to the light bulb 3 and the first reflective assembly 4 is provided on the lampshade 2. The light bulb 3 and the first reflective assembly 4 are moved in the lampshade 2 by rotating the adjustment assembly 21.

[0036] The adjustment assembly 21 includes an adjustment knob 211 and a first support column 212. A first electromagnet 213 is fixedly connected to the top of the first support column 212. A variable resistor and a relay are provided on the lamp body 1. The adjustment knob 211 is connected to the variable resistor and the relay to change the magnetic field strength of the first electromagnet 213 and the brightness of the bulb 3 through the variable resistor. By controlling the relay, the current direction of the first electromagnet 213 can be changed, thereby changing the magnetic pole direction of the first electromagnet 213.

[0037] The top of the first reflective component 4 passes through the interior of the first support column 212 and is slidably connected between the inner wall of the first support column 212. A second magnet 216 that cooperates with the first electromagnet 213 is provided on the top of the first reflective component 4. The second magnet 216 is fixedly connected to the top of the first reflective component 4. A first magnet 215 that repels the magnetic poles of the second magnet 216 is provided at the bottom of the first support column 212. The first magnet 215 is distributed in an annular shape and is fixedly connected between the bottom of the first support column 212 and the first support column 212.

[0038] The first reflective component 4 is trumpet-shaped, and the first reflective component 4 has a large opening at one end close to the bulb 3. The bulb 3 is fixedly connected to the first reflective component 4 by a second support column 214. The second support column 214 and the first reflective component 4 are coaxial, and the second support column 214 is fixedly connected to the top of the first reflective component 4. A limiting ring 22 matching the first reflective component 4 is provided on the inner wall of the lampshade 2. The limiting ring 22 is fixedly connected between the bottom of the first reflective component 4 and the lampshade 2, and a sliding hinge is provided between the bottom of the first reflective component 4 and the limiting ring 22.

[0039] The second reflective assembly 5 includes a support frame 51 and an elastic lens 52. The support frames 51 are distributed circumferentially around the outer side of the elastic lens 52. The elastic lenses 52 are located at the upper and lower ends of the multiple support frames 51. The elastic lenses 52 can be deformed according to the squeezing of the multiple support frames 51. A second support plate 53 is provided on the outer side of the end of the support frame 51 away from the elastic lens 52. A first support plate 23 matching the second support plate 53 is provided on the inner wall of the lampshade 2. The first support plate 23 is fixedly connected to the inner wall of the lampshade 2. The second support plate 53 passes through the first support plate 23 and is slidably connected to the first support plate 23 through a connecting assembly 6.

[0040] The connecting assembly 6 includes a connecting rod 61 , both ends of which are hinged to the first reflective assembly 4 and the second supporting plate 53 respectively.

[0041] When in use, the bulb 3 and the first electromagnet 213 are energized by rotating the adjustment knob 211, and the brightness of the bulb 3 and the size of the magnetic pole of the first electromagnet 213 are controlled by the variable resistor. When the brightness of the bulb 3 needs to be adjusted, the adjustment knob 211 is rotated. At the same time, the brightness of the bulb 3 increases, and the magnetic force of the first electromagnet 213 increases. The magnetic poles of the first electromagnet 213 and the second magnet 216 repel each other, driving the top of the first reflective component 4 to move away from the first electromagnet 213. The magnetic poles of the first magnet 215 and the second magnet 216 repel each other, and the first magnet 215 repels the second magnet 216. The magnet 216 is limited to prevent the second magnet 216 from driving the first reflective component 4 to slide out of the first support column 212. The bottom of the first reflective component 4 is slidably hinged with the limiting ring 22, and the expansion opening of the first reflective component 4 begins to become larger, thereby ensuring that the light divergence becomes larger. At the same time, the first reflective component 4 squeezes the second support plate 53 together with the connecting rod 61 during the process of expanding to both sides. The connecting rod 61 tends to be horizontal, and the connecting rod 61 drives the second support plate 53 to start moving to both sides. The elastic lens 52 is flattened in the area driven by the second support plate 53, thereby further ensuring that the light divergence becomes larger. To dim the brightness of the bulb 3 and reduce the illumination range, the current direction of the first electromagnet 213 is changed through the relay, thereby changing the magnetic pole of the first electromagnet 213, so that the first electromagnet 213 and the second magnet 216 attract each other with opposite poles. By rotating the adjustment knob 211, the size of the magnetic pole of the first electromagnet 213 and the brightness of the bulb 3 are adjusted, so that the bulb 3 moves toward the direction of the first electromagnet 213, the first reflective component 4 begins to retract inward, and the opening is reduced. At the same time, the first reflective component 4 drives the connecting rod 61 to become vertical, and the second support plate 53 begins to slide along the first support plate 23. The elastic lenses 52 begin to converge inward through the support frame 51, and the elastic lenses 52 on both sides begin to deform inward in an arc shape with the center of the circle as the center, converging the light reflected by the bulb 3 and the first reflective component 4 so that the irradiated light is concentrated, thereby adjusting the illumination range and dynamically matching the illumination range with the brightness to avoid ineffective energy consumption. At low brightness, the reflective component gathers light and concentrates the illumination area; at high brightness, the range is expanded to avoid local overexposure and improve the utilization rate of effective luminous flux. The limit ring 22 constrains the movement trajectory of the bottom of the first reflective component 4 to ensure the stability and symmetry of the adjustment process.

[0042] Compared with the existing technology, by rotating the adjustment knob 211, not only the brightness of the bulb 3 can be adjusted, but also the magnetic field size of the first electromagnet 213 can be controlled by the variable resistor, and the current direction of the first electromagnet 213 can be changed by the relay, thereby changing its magnetic pole direction so that the illumination range and brightness can be dynamically matched. Users can flexibly adjust according to actual needs, which not only meets the lighting needs in different scenarios, but also avoids ineffective energy consumption and improves the effective luminous flux utilization rate. A second magnet 216 is provided on the top of the first reflective component 4 to cooperate with the first electromagnet 213. Through the change of the magnetic field of the first electromagnet 213, the first reflective component 4 can be driven to move in the lampshade 2. When the brightness of the bulb 3 increases, the magnetic force of the first electromagnet 213 becomes stronger, and repels the second magnet 216 with the same pole, driving the top of the first reflective component 4 to move away from the first electromagnet 213, so that the expansion opening of the first reflective component 4 becomes larger, and the light divergence becomes larger, thereby expanding the illumination range. The two ends of the connecting rod 61 are respectively hinged to the first reflective component 4 and the second support plate 53. When the first reflective component 4 expands or contracts, the second support plate 53 is driven to move by the connecting rod 61, thereby deforming the elastic lens 52, thereby achieving further adjustment of the illumination range. The dynamic matching mechanism makes the lighting more efficient and energy-saving. The first reflective component 4 is trumpet-shaped, and the first reflective component 4 is flexibly adjusted through the interaction between the first electromagnet 213 and the second magnet 216, and the assistance of the first magnet 215. This design not only expands the illumination range, but also ensures stability and symmetry during the adjustment process through the limit ring 22, improving the illumination effect and user experience. The second reflective assembly 5 is linked to the first reflective assembly 4 via the connecting assembly 6. When the first reflective assembly 4 expands, the connecting rod 61 drives the second support plate 53 to move, flattening the elastic lens 52 and further expanding the illumination range. When the first reflective assembly 4 contracts, the elastic lens 52 converges, concentrating the light. This design not only improves the utilization rate of light flux, but also avoids local overexposure.

[0043] Example 2

[0044] In the above embodiment, the angle of the first reflective component 4 is deflected by rotating the adjustment knob 211, but the reflective surface is expanded outward as a whole. Although the illumination range is expanded, the central area causes light divergence due to the change in the curvature of the reflective surface, and the central brightness is significantly reduced. Therefore, the embodiment of the present application optimizes the first reflective component 4 based on the above embodiment.

[0045] In this embodiment, the first reflective assembly 4 includes a first reflective plate 41 and a first reflective structure 42. The first reflective plate 41 is located above the first reflective structure 42. The bottom of the inner wall of the first reflective plate 41 contacts the outer wall of the first reflective structure 42. The top of the first reflective plate 41 is located inside the first support column 212 and is slidably connected to the inner wall of the first support column 212. The first reflective plate 41 and the first reflective structure 42 are both trumpet-shaped and coaxial. The bottom of the first reflective structure 42 is slidably hinged to the limiting ring 22.

[0046] The first reflective structure 42 includes multiple second reflective plates, which are distributed in a circle around the center of the first reflective plate 41. There is a gap between two adjacent second reflective plates. A sliding block is provided between the bottom of the second reflective plate and the limiting ring 22, and the sliding block is slidably connected to the limiting ring 22. The bottom of the connecting rod 61 is hinged to the sliding block and is provided with a matching torsion spring.

[0047] During use, the first reflector 41 is driven to move toward the light bulb 3 by rotating the adjustment knob 211. The bottom of the first reflector 41 squeezes the top of the first reflective structure 42. The multiple second reflectors are squeezed by the inner wall of the first reflector 41, and the bottom pushes the sliding block to slide and articulates around the sliding block so that the sliding block tends to be horizontal, thereby only controlling the diffusion of the peripheral light path and avoiding interference with the central light path. At this time, the connecting rod 61 is affected by the horizontal first reflective structure 42 and drives the elastic lens 52 to expand, so that the horizontal first reflective structure 42 can reflect light in a wider range, further supplement the peripheral light path, and reduce light leakage loss. The first reflector 41 is trumpet-shaped facing the bulb 3, which can make the light in the central range more concentrated, thereby ensuring that the high reflectivity of the central area can be always maintained while ensuring the expansion of the illumination range, ensuring the stability of the central brightness. When it is necessary to adjust the illumination range, the adjustment knob 211 is flipped, and the first reflector 41 moves toward the first electromagnet 213. The first reflective structure 42 is reset under the action of the second reflective component 5 to ensure contact between the first reflective structure 42 and the first reflector 41.

[0048] Compared to the prior art, the interaction between the first reflector 41 and the first reflective structure 42 allows the first reflector 41, facing the bulb 3, to consistently reflect concentrated light from the central area during adjustment, ensuring stable central brightness and avoiding a significant drop in central brightness due to the overall expansion of the reflective surface. The first reflective structure 42 is composed of multiple second reflectors distributed in a circular pattern around the center of the first reflector 41, with gaps between adjacent second reflectors. As the first reflector 41 moves toward the bulb 3, its bottom presses against the top of the first reflective structure 42, causing the multiple second reflectors to hinge and rotate around the slider. This effectively controls the diffusion of the peripheral light path and avoids interference with the central light path. This design enables independent control of the peripheral and central light paths, increasing the flexibility of lighting adjustment. When the first reflective structure 42 is deployed horizontally, it can reflect light over a wider range. Simultaneously, the connecting rod 61 drives the elastic lens 52 to deploy, further supplementing the peripheral light path, reducing light loss during propagation, and improving light flux utilization. The bottom of the second reflector is connected to the retaining ring 22 via a sliding block, which is in a sliding connection with the retaining ring 22. The bottom of the connecting rod 61 is hinged to the sliding block and equipped with a matching torsion spring to ensure the stability of the first reflective structure 42 during deployment and repositioning. When the illumination range needs to be adjusted, the adjustment knob 211 is flipped, the first reflector 41 moves toward the first electromagnet 213, and the first reflective structure 42 is reset under the action of the second reflective component 5, ensuring that the first reflective structure 42 and the first reflector 41 always maintain contact, thereby improving the durability and reliability of the device. By rotating the adjustment knob 211 to drive the first reflector 41 to move, the expansion degree of the first reflective structure 42 is controlled, thereby achieving dynamic matching of the illumination range and brightness.

[0049] Example 3

[0050] In the above embodiment, the reflection range of light is adjusted separately by the first reflective plate 41 and the first reflective structure 42 to ensure stable central brightness. However, when the first reflective component 4 is adjusted to deform, the curvature of its reflecting surface changes, resulting in light scattering or reflection angle deviation, and poor light path stability. Therefore, the embodiment of the present application optimizes the first reflective component 4 based on the above embodiment.

[0051] In this embodiment, a reflecting prism 43 matching the light bulb 3 is provided inside the first reflector 41 and the first reflective structure 42. There are multiple reflecting prisms 43, which are flexibly connected to each other in sequence. The midpoint of the reflecting prism 43 is fixedly connected to the inner wall of the corresponding first reflector 41 and the first reflective structure 42. When the first reflector 41 and the first reflective structure 42 are deformed, the reflecting prism 43 can flexibly change. The prism 43 itself offsets mechanical stress through slight deformation, thereby preventing distortion of the reflecting surface.

[0052] The first reflector 41 and the second reflector are provided with a plurality of heat dissipation channels 44 . The heat dissipation channels 44 are serpentine and arranged linearly in a circumferential manner on the first reflector 41 and the second reflector. The lampshade 2 is provided with heat dissipation holes 24 matching the heat dissipation channels 44 . The heat dissipation holes 24 are multiple and distributed linearly in a circumferential manner on the lampshade 2 .

[0053] During use, the angles of the first reflector 41 and the first reflective structure 42 are adjusted by adjusting the component 21, and the light emitted by the bulb 3 is reflected by the reflective prisms 43 on the first reflector 41 and the first reflective structure 42, thereby expanding the illumination range of the bulb 3. The reflective prisms 43 are multiple and are located on the first reflector 41 and the first reflective structure 42. During the deformation process, the multiple reflective prisms 43 are flexibly connected to each other, thereby maintaining the continuity of the reflecting surface, avoiding the reflection blind area caused by the mechanical displacement of the component, and forming a multi-level reflection of central focusing + peripheral diffusion. The heat dissipation channel 44 is located on the first reflector 41 and the first reflective structure 42 to dissipate heat from the front half of the lampshade 2 close to the bulb 3. The heat dissipation channel 44 is a serpentine-shaped heat dissipation path to increase the contact area with the air. It corresponds to the position of the heat dissipation channel 44, forming a channel to guide the airflow + holes to quickly dissipate heat, thereby avoiding heat retention, which affects the service life of the bulb 3.

[0054] Compared to the prior art, multiple reflective prisms 43 matching the bulb 3 are disposed on the inner sides of the first reflector 41 and the first reflective structure 42, and these reflective prisms 43 are flexibly connected. When the first reflector 41 and the first reflective structure 42 deform, the reflective prisms 43 can flexibly change. This slight deformation offsets mechanical stress, prevents distortion of the reflective surface, ensures the continuity of the reflective surface, maintains the stability of the optical path, and avoids reflection blind spots caused by mechanical displacement of the components. The reflective prisms 43 reflect light emitted by the bulb 3, creating a multi-stage reflection effect of central concentration and peripheral diffusion. This ensures high brightness in the central area while expanding the peripheral illumination range, improving illumination uniformity and practicality. Multiple serpentine heat dissipation channels 44 are provided on the first and second reflectors, and heat dissipation holes 24 matching the heat dissipation channels 44 are provided on the lampshade 2. The heat dissipation channels 44 are arranged in a circular, linear pattern, increasing the contact area with air and extending the heat dissipation path. The heat dissipation holes 24 provide a channel for rapid heat dissipation, avoiding heat retention in the lampshade 2, thereby affecting the service life of the bulb 3, effectively improving the heat dissipation performance of the desk lamp, ensuring the stable operation of the equipment, and achieving the dual goals of energy saving and high efficiency.

[0055] Example 4

[0056] In the above embodiment, a plurality of serpentine heat dissipation channels 44 are provided on the first reflector 41 and the second reflector, and heat dissipation holes 24 matching the heat dissipation channels 44 are provided on the lampshade 2, thereby increasing the contact area with the air and extending the heat dissipation path. However, the embodiment lacks dynamic adjustment capability and cannot respond quickly when the bulb 3 generates instantaneous high temperature due to a sudden increase in current or long-term high-load operation. Therefore, the embodiment of the present application optimizes the first reflective component 4 based on the above embodiment.

[0057] In this embodiment, the heat dissipation channels 44 include exhaust channels 441 and intake channels 442. Multiple groups of heat dissipation channels 44 are circumferentially distributed on the first reflector 41 and the first reflective structure 42. Multiple intake channels 442 are provided between the individual heat dissipation channels 44. The multiple intake channels 442 are interconnected with the lamp body 1 41. The diameter of the exhaust channels 441 is larger than that of the intake channels 442. The exhaust channels 441 absorb heat from the lampshade 2 and discharge it through the exhaust channels 441.

[0058] An airbag 4411 is provided in the exhaust channel 441 . The airbag 4411 is an elastic airbag filled with phase change material paraffin.

[0059] During use, the heat in the lampshade 2 enters the exhaust channel 441 through multiple air intake channels 442. The air intake channels 442 are multiple and cover the core heating area to achieve directional heat dissipation in the core area. The air intake channels 442 achieve uniform heat absorption through a multi-inlet design and achieve uniform heat dissipation through a large contact area. The heat entering the air intake channels 442 is discharged from the interior of the lampshade 2 through the exhaust channel 441. The diameter of the exhaust channel 441 is larger than the diameter of the air intake channel 442 to accelerate the discharge of hot air flow, forming an efficient cycle of multi-point absorption and concentrated discharge. An air bag 4411 is provided in the exhaust channel 441, and the air bag 4411 is filled with paraffin. When the current of the lampshade 2 suddenly increases to produce an instantaneous thermal shock or the temperature of the lampshade 2 is too high and exceeds a threshold value due to long-term use, the paraffin absorbs a large amount of latent heat from solid to liquid phase, delaying the temperature rise. During the phase change process, the paraffin absorbs heat and reduces in volume. The enlarged diameter of the exhaust channel 441 can quickly dissipate heat, further accelerating the heat dissipation.

[0060] Compared with the prior art, the heat dissipation channel 44 is subdivided into the exhaust channel 441 and the intake channel 442 through the differentiated setting of the exhaust channel 441 and the intake channel 442, and the diameter of the exhaust channel 441 is larger than the diameter of the intake channel 442, so that heat can be absorbed through multiple intake channels 442 and quickly discharged through the exhaust channel 441 with a larger diameter, forming a high-efficiency cycle of multi-point absorption and centralized discharge, which significantly improves the heat dissipation efficiency. Multiple intake channels 442 cover the core heating area, realizing directional heat dissipation in the core area, ensuring that the heat generated by the bulb 3 during a sudden increase in current or long-term high-load operation can be quickly and evenly absorbed, avoiding the problem of local overheating. An elastic airbag 4411 is provided in the exhaust channel 441, and the airbag 4411 is filled with phase change material paraffin. When the temperature inside the lampshade 2 becomes excessively high due to a sudden increase in current or prolonged use, the paraffin wax undergoes a phase transition from solid to liquid, absorbing a large amount of latent heat, thereby slowing the temperature rise. This allows the lamp to respond quickly to transient thermal shocks and protect the bulb 3 from damage. During the paraffin wax phase transition, its volume decreases, resulting in a corresponding decrease in the volume of the airbag 4411. This increases the diameter of the exhaust passage 441, further accelerating the exhaust of hot air and improving heat dissipation efficiency.

[0061] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above and, without departing from the purpose of the present invention, designs structures and embodiments similar to the technical solution without creatively designing, they shall fall within the scope of protection of the present invention.

Claims

1. An energy-saving desk lamp with dual-control light sources to expand the illumination range, characterized by: The lamp body comprises a lampshade, wherein a light bulb, a first reflective component and a second reflective component matching the light bulb are arranged in the lamp body, and an adjustment component is arranged on the lampshade to drive the light bulb and the first reflective component to be adjusted in the lampshade; The first reflective component and the second reflective component are synchronously adjusted by a connecting component. The second reflective component includes an elastic lens. The lampshade is provided with a first supporting plate that matches the second reflective component. The second reflective component slides along the first supporting plate through the connecting component to achieve the contraction and expansion of the elastic lens. The adjustment assembly includes an adjustment knob and a first support column. The top of the first reflective assembly is slidably connected to the first support column. A first electromagnet is provided in the first support column. A second magnet matching the first electromagnet is provided on the top of the first reflective assembly. The adjustment knob adjusts the brightness of the bulb and the magnitude of the magnetic field of the first electromagnet. The lamp body is provided with a relay matching the first electromagnet. The first reflective assembly includes a first reflective plate and a first reflective structure. The first reflective plate and the first reflective structure are slidably connected, and the bottom of the first reflective structure is hinged to the lampshade.

2. The energy-saving desk lamp with dual-controllable light sources and expanded illumination range according to claim 1, characterized in that: The lamp body is also provided with a variable resistor, which is connected to the adjustment component. The brightness of the bulb and the size of the magnetic field of the first electromagnet are adjusted by adjusting the knob. The first electromagnet is fixedly connected to the top of the first support column, and the first reflective component is slidably connected to the first support column. The bottom of the first support column is provided with a first magnet that repels the magnetic pole of the second magnet.

3. The energy-saving desk lamp with dual-controllable light sources and expanded illumination range according to claim 1, characterized in that: The first reflective component is trumpet-shaped, and the end of the first reflective component close to the light bulb is a large-mouth end. The light bulb and the top of the first reflective component are fixedly connected by a second support column. The second support column is coaxial with the first reflective component and fixedly connected to the top of the first reflective component, thereby driving the light bulb to move synchronously through the first reflective component.

4. The energy-saving desk lamp with dual-controllable light sources and expanded illumination range according to claim 1, characterized in that: The second reflective assembly also includes a support frame, which is multiple and distributed in a circle around the light bulb. The two elastic lenses are located between the multiple support frames and are horizontally arranged up and down. The multiple support frames are fixedly connected to the outer contour of the elastic lens. The elastic lens can be deformed according to the extrusion of the multiple support frames.

5. The energy-saving desk lamp with dual-control light sources and expanded illumination range according to claim 1, characterized in that: The bottom of the inner wall of the first reflector contacts the outer wall of the first reflector structure. Both the first reflector and the first reflector structure are trumpet-shaped. A limiting ring corresponding to the first reflector structure is provided on the lampshade. The bottom of the first reflector structure is hinged to the limiting ring.

6. The energy-saving desk lamp with dual-controllable light sources and expanded illumination range according to claim 5, characterized in that: The first reflective structure includes multiple second reflective plates, which are distributed in a circle around the center of the first reflective plate. There is a gap between two adjacent second reflective plates. A sliding block slidably connected to a limiting ring is provided at the bottom of the second reflective plate. The sliding block is hinged to the second reflective plate and is provided with a matching torsion spring.

7. The energy-saving desk lamp with dual-controllable light sources and expanded illumination range according to claim 1, characterized in that: A plurality of reflecting prisms matching the light bulb are provided on the inner side of the first reflecting plate and the first reflecting structure. Two adjacent reflecting prisms are flexibly connected. The reflecting prisms are fixedly connected to the corresponding first reflecting plate and the first reflecting structure. When the first reflecting plate and the first reflecting structure are deformed, the reflecting prisms can flexibly change.

8. The energy-saving desk lamp with dual-controllable light sources and expanded illumination range according to claim 1, characterized in that: The first reflective plate and the first reflective structure are provided with a plurality of heat dissipation channels, and the plurality of heat dissipation channels are bent in a serpentine shape and are linearly arranged in a circumference on the first reflective plate and the first reflective structure.

9. The energy-saving desk lamp with dual-controllable light sources and expanded illumination range according to claim 8, characterized in that: The heat dissipation channel includes multiple exhaust channels and air intake channels. The multiple exhaust channels are connected to the air intake channels at any time. The diameter of the exhaust channels is larger than that of the air intake channels. The exhaust channels absorb heat in the lampshade and discharge it through the exhaust channels.

10. The energy-saving desk lamp with dual-controllable light sources and expanded illumination range according to claim 9, characterized in that: An airbag is provided in the exhaust channel, and a plurality of airbags are arranged along the inner wall of the exhaust channel. The airbag is an elastic airbag. A phase change material is provided in the airbag, and the phase change material absorbs heat to change phase.

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