Reflection type lighting structure and table lamp

By adopting a reflective lighting structure in the LED desk lamp, the mirror surface and diffuse arc surface reflect light, the problems of excessive blue light, non-soft light and poor uniformity are solved, and a more soft and uniform lighting effect is achieved.

CN119572989APending Publication Date: 2025-03-07SHANGHAI SANSI ELECTRONICS ENG +4
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Patent Information

Application Number
CN202311151432.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-09-06
Publication Date
2025-03-07

AI Technical Summary

Technical Problem

Existing LED desk lamps have problems such as excessive blue light, poor light and poor uniformity.

Method used

A reflective lighting structure is adopted, including a heat dissipation base, a light emitting unit and a reflective lampshade. The inner wall of the reflective lampshade is provided with a specular reflective arc surface and a diffuse arc surface to reflect light through the diffuse arc surface to form a uniform rectangular spot.

Benefits of technology

It effectively reduces the components of blue light, makes the light softer and even more uniform, improves the uniformity and light efficiency of the lighting, and reduces the size of the lamp body, suitable for reading, working and other scenarios.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a reflection type lighting structure. The reflection type lighting structure comprises a heat dissipation base; the light-emitting unit is arranged at the top of the heat dissipation base; the light-emitting unit is covered with the reflection lampshade, the inner wall of the reflection lampshade is provided with a mirror reflection cambered surface and a diffuse reflection cambered surface, the mirror reflection cambered surface is arranged on the inner wall of the bottom end of the reflection lampshade, and the diffuse reflection cambered surface is arranged on the inner wall of the top end of the reflection lampshade; one part of light emitted from the light emitting unit is directly emitted to the diffuse reflection cambered surface, the other part of light is reflected by the mirror reflection cambered surface and then emitted to the diffuse reflection cambered surface, and the light is reflected by the diffuse reflection cambered surface and emitted from the bottom of the reflection lampshade to form uniform light spots; by means of the characteristic of diffuse reflection, healthier and more uniform lamplight is provided, and the problems that in the prior art, direct type light-emitting and side light-emitting table lamps are excessive in blue light, not soft in light and poor in uniformity are solved.
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Description

Technical Field

[0001] The present invention relates to the technical field of household lighting, and in particular to a reflective lighting structure and a table lamp. Background Art

[0002] A desk lamp generally refers to an electric lamp with a base that is placed on a table. It is mainly used for lighting to facilitate reading, studying, working, etc. However, with the advancement of technology, the light source, appearance and shape of desk lamps are also constantly developing, and desk lamps of various forms and functions have gradually appeared.

[0003] Due to the advantages of LED lamp beads, such as small size, energy saving and low heat generation, more and more table lamp products use LED as the light source. However, based on the lighting method of LED lamps, the light source of LED lamps is too concentrated when lighting, resulting in a very small light-emitting surface, which leads to excessive brightness at the light-emitting part of the lamp, making the human eye dizzy or even blind for a short time. At the same time, based on the principle of LED light emission, the higher the brightness of LED lighting with the same power, the more blue light components there are in the lighting light. Blue light can easily cause eye damage, especially macular degeneration. Blue light can penetrate the lens to reach the retina, causing optical damage to it, accelerating the oxidation of macular cells, generating a large number of free radicals, leading to cataracts and macular degeneration.

[0004] Existing LED desk lamps are mostly direct-lighting and side-lighting. Direct-lighting desk lamps have the problem of blue light because the human eye looks directly at the light source. At the same time, the light is not soft enough and the uniformity is poor. Side-lighting desk lamps have low luminous efficiency, the light is not bright enough, and the uniformity is poor. Therefore, a lighting structure is needed to solve the above problems. Summary of the invention

[0005] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a reflective lighting structure and a desk lamp to solve the problems of excessive blue light, harsh light and poor uniformity existing in direct-lighting and side-lighting desk lamps in the prior art.

[0006] In order to solve the above technical problems, the present invention provides a reflective lighting structure, comprising:

[0007] Heat dissipation base;

[0008] A light emitting unit, the light emitting unit being arranged on the top of the heat dissipation base;

[0009] A reflective lampshade, wherein the reflective lampshade is arranged on the light-emitting unit, and the inner wall of the reflective lampshade is provided with a mirror reflection arc surface and a diffuse reflection arc surface, wherein the mirror reflection arc surface is arranged on the inner wall of the bottom end of the reflective lampshade, and the diffuse reflection arc surface is arranged on the inner wall of the top end of the reflective lampshade, a part of the light emitted from the light-emitting unit is directly emitted to the diffuse reflection arc surface, and another part of the light is reflected by the mirror reflection arc surface and then emitted to the diffuse reflection arc surface, and at the same time, the outer contour of the diffuse reflection arc surface is butterfly-shaped, and the lower edge of the reflective lampshade is rectangular, so that the outer contour of the butterfly shape satisfies the requirement that the diffuse reflection arc surface reflects light more evenly downward, and at the same time, all the light reflected downward is limited by the lower edge of the reflective lampshade, and the light is reflected by the diffuse reflection arc surface and emitted from the bottom of the reflective lampshade to form a uniform rectangular light spot.

[0010] As a more preferred scheme, the reflective lampshade includes a mirror reflective cover and a diffuse reflective cover, the diffuse reflective cover is clamped on the top of the mirror reflective cover, and the mirror reflective arc surface and the diffuse reflective arc surface are respectively arranged on the inner walls of the mirror reflective cover and the diffuse reflective cover. The reflective lampshade with a split design has the following advantages. On the one hand, the modular structural design is more conducive to mass production and improves production efficiency; on the other hand, the split and re-assembled structural design makes the installation of the mirror reflective arc surface and the diffuse reflective arc surface more convenient. It is only necessary to assemble the mirror reflective arc surface and the diffuse reflective arc surface with the corresponding mirror reflective cover and the diffuse reflective cover in advance, and then assemble them.

[0011] As a more preferred solution, the reflective lampshade also includes a translucent cover, which is clamped on the mirror reflective cover. A part of the light emitted from the light-emitting unit is also directly emitted from the translucent cover. In this way, the back side of the reflective lighting structure of the present invention can also emit light, and the light emitted from the back can be used for auxiliary lighting. By adjusting the size of the translucent cover, the intensity of light emitted from the back can be achieved, and the translucent cover reduces blue light.

[0012] As a more preferred solution, the heat dissipation base includes a heat sink and a substrate, the substrate is pressed onto the heat sink, and the light emitting unit is arranged on the substrate.

[0013] As a more preferred solution, the heat sink is made of aluminum, which has very good thermal conductivity. Better thermal conductivity means that the light-emitting unit can work at a higher power, so that the brightness of the light-emitting unit is higher.

[0014] As a more preferred solution, the substrate is made of ceramic material. Ceramic material has excellent structural stability, high temperature resistance, wear resistance and heat insulation performance. When used as a substrate, the life and performance of the reflective lighting structure can be further improved.

[0015] In order to solve the above problem, the present invention further provides a desk lamp, comprising:

[0016] The above-mentioned reflective lighting structure;

[0017] A light-transmitting shell, wherein the light-transmitting shell is light-transmitting from top to bottom and light-impermeable around, and the light-transmitting surface thereof is frosted or translucent to optimize uniformity and blue light, wherein the light-transmitting shell includes an inner cavity for accommodating the reflective lighting structure, and the reflective lighting structure is disposed in the inner cavity of the light-transmitting shell;

[0018] A fixed base and a connecting rod structure, two ends of the connecting rod structure are respectively connected to the fixed base and the light-transmitting shell, and the light-transmitting shell is supported on the upper side of the fixed base, and the reflective lighting structure projects a uniform light spot downward.

[0019] As a more preferred solution, the desk lamp also includes an electric control unit, the fixed base includes an inner cavity for accommodating the electric control unit, the electric control unit is arranged in the inner cavity of the fixed base, and the switch and brightness of the desk lamp are controlled by the electric control unit.

[0020] As a more preferred solution, the connecting rod structure includes a first connecting rod and a second connecting rod hinged to each other at one end, the other end of the first connecting rod is hinged to the fixed base, and the other end of the second connecting rod is hinged to the light-transmitting shell. The relative angles of the first connecting rod, the second connecting rod, the fixed base and the light-transmitting shell on both sides of each hinge point are adjusted to achieve the effect of adjusting the desk lamp to different postures, thereby adapting to different usage habits and different usage scenarios of different users, thereby improving the applicability of the desk lamp.

[0021] As a more preferred solution, the desk lamp also includes locking members arranged at each hinge point. When the user completes adjusting the posture of the desk lamp, the locking members are used to lock the corresponding hinge structure so that the desk lamp can stably maintain the desired posture.

[0022] As described above, the reflective lighting structure and desk lamp of the present invention have the following beneficial effects: when the reflective lighting structure of the present invention is in use, a part of the light emitted from the light-emitting unit is directly emitted to the diffuse reflection arc surface, and the other part of the light is reflected by the mirror reflection arc surface and then emitted to the diffuse reflection arc surface. The light is reflected by the diffuse reflection cover and emitted from the bottom of the reflective lampshade to form a uniform light spot. At the same time, the original regular concentrated lighting light is greatly increased after diffuse reflection. At the same time, the blue light of the lighting light is reduced due to diffuse reflection, making the emitted light softer and healthier, and the light loss in this process is small, with better lighting effect. Furthermore, the reflective lighting structure emits light in a reflected manner, which extends the length of the light path. Compared with traditional direct-down and side-emitting desk lamps, the lamp body The structure can also be made more compact, with the size of the lamp head within 140mm. The projected rectangular light spot is softer and more uniform, and is more suitable for lighting scenes such as reading and working. It also meets the performance requirements of reading and writing desk lamps in Item 6.4.2 of GB / T9473-2022 regarding illumination and illumination uniformity. The desk lamp of the present invention uses a reflective lighting structure, so its corresponding emitted light has the advantages of low blue light and soft and uniform light, and is very suitable as a desk lamp for users' daily reading, study, work and other scenes. The reflective lighting structure and desk lamp of the present invention utilize the characteristics of diffuse reflection to provide healthier and more uniform lighting, solving the problems of excessive blue light, harsh light and poor uniformity in direct-lighting and side-lighting desk lamps in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic diagram of the reflective lighting structure and desk lamp of the present invention;

[0024] Figure 2 A partial cross-sectional view of the reflective lighting structure of the present invention is shown;

[0025] Figure 3 A partial cross-sectional view showing another perspective of the reflective lighting structure of the present invention;

[0026] Figure 4 It is a schematic diagram showing the connection between the light emitting unit and the substrate of the reflective lighting structure of the present invention.

[0027] Component number description

[0028] 1 Heat sink

[0029] 11 base plate

[0030] 12 Radiator

[0031] 2 Lighting units

[0032] 3 Reflector lampshade

[0033] 31 Mirror reflector

[0034] 32 Diffuse reflector

[0035] 33 Transparent cover

[0036] 4 Translucent housing

[0037] 41 Lower shell

[0038] 42 Upper shell

[0039] 421 Grid

[0040] 5 Connecting rod structure

[0041] 51 First connecting rod

[0042] 52 Second connecting rod

[0043] 6 Fixed base DETAILED DESCRIPTION

[0044] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0045] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification, so that people familiar with this technology can understand and read them, and are not used to limit the limiting conditions that the present invention can implement, so they have no technical substantive significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope of the technical content disclosed by the present invention. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is limited only by the claims of the published patents. The terms used here are only for describing specific embodiments and are not intended to limit the present application. Spatially related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., can be used in the text to facilitate the description of the relationship between an element or feature shown in the figure and another element or feature.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "hold" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless there is an indication to the contrary in the context. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence or addition of one or more other features, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B or C" or "A, B and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C". Exceptions to this definition will only occur when the combination of elements, functions or operations is inherently mutually exclusive in some way.

[0048] like Figures 1 to 4 As shown, the present invention provides a reflective lighting structure, comprising:

[0049] Heat dissipation base 1;

[0050] A light emitting unit 2, wherein the light emitting unit 2 is disposed on the top of the heat dissipation base 1;

[0051] A reflective lampshade 3, wherein the reflective lampshade 3 is disposed on the light-emitting unit 2, and the inner wall of the reflective lampshade 3 is provided with a mirror reflection arc surface and a diffuse reflection arc surface, wherein the mirror reflection arc surface is disposed on the inner wall at the bottom end of the reflective lampshade 3, and the diffuse reflection arc surface is disposed on the inner wall at the top end of the reflective lampshade 3, a part of the light emitted from the light-emitting unit 2 is directly emitted to the diffuse reflection arc surface, and another part of the light is reflected by the mirror reflection arc surface and then emitted to the diffuse reflection arc surface, and at the same time, the outer contour of the diffuse reflection arc surface is butterfly-shaped, and the lower edge of the reflective lampshade 3 is rectangular, so that the outer contour of the butterfly shape satisfies the requirement that the diffuse reflection arc surface reflects light more evenly downward, and at the same time, all the light reflected downward is limited by the lower edge of the reflective lampshade 3, and the light is reflected by the diffuse reflection arc surface and emitted from the bottom of the reflective lampshade 3 to form a uniform rectangular light spot.

[0052] When the reflective lighting structure of the present invention is in use, a part of the light emitted from the light-emitting unit 2 is directly emitted to the diffuse reflection arc surface, and the other part of the light is reflected by the mirror reflection arc surface and then emitted to the diffuse reflection arc surface. The light is reflected by the diffuse reflection arc surface and emitted from the bottom of the reflective lampshade 3 to form a uniform light spot. At the same time, the original regular concentrated lighting light is greatly increased after diffuse reflection. At the same time, the blue light of the lighting light is reduced due to diffuse reflection, making the emitted light softer and healthier, and the light loss in this process is small, and it has better lighting effect. Furthermore, the reflective lighting structure uses light reflection to emit, which extends the length of the light path. Compared with traditional direct-lighting and side-lighting desk lamps, the structure of the lamp body can also be made more compact. The projected rectangular light spot is softer and more uniform, so it is more suitable for lighting scenes such as reading and working, and also meets the provisions of Item 6.4.2 on illumination and illumination uniformity in the performance requirements of reading and writing desk lamps GB / T9473-2022.

[0053] In this embodiment, if Figure 1 as well as Figure 2 As shown, the reflective lampshade 3 is fixed to the heat dissipation base 1 to achieve covering the light-emitting unit 2. Furthermore, threaded holes are respectively provided at corresponding positions of the reflective lampshade 3 and the heat dissipation base 1, and the reflective lampshade 3 is fixed to the heat dissipation base 1 by screws passing through the corresponding threaded holes.

[0054] In this embodiment, if Figure 1 as well as Figure 2 As shown, the reflective lampshade 3 includes a mirror reflective cover 31 and a diffuse reflective cover 32, the diffuse reflective cover 32 is clamped on the top of the mirror reflective cover 31, and the mirror reflective arc surface and the diffuse reflective arc surface are respectively arranged on the inner walls of the mirror reflective cover 31 and the diffuse reflective cover 32. The reflective lampshade 3 with a split design has the following advantages. On the one hand, the modular structural design is more conducive to mass production and improves production efficiency; on the other hand, the split and re-assembled structural design makes the installation of the mirror reflective arc surface and the diffuse reflective arc surface more convenient. It is only necessary to assemble the mirror reflective arc surface and the diffuse reflective arc surface with the corresponding mirror reflective cover 31 and the diffuse reflective cover 32 in advance, and then assemble them.

[0055] In this embodiment, if Figure 1 as well as Figure 2As shown, the reflective lampshade 3 also includes a translucent cover 33, and the translucent cover 33 is clamped on the mirror reflective cover 31. A part of the light emitted from the light-emitting unit 2 is also directly emitted from the translucent cover 33, so that the back side of the reflective lighting structure of the present invention can also emit light, and the light emitted from the back side can be used for auxiliary lighting. By adjusting the size of the translucent cover 33, the intensity of the light emitted from the back side can be achieved; at the same time, by directly emitting a part of the light from the translucent cover 33, it can also play a role in reducing a part of the blue light, which can prevent the user's glasses from directly receiving blue light when using the desk lamp.

[0056] In this embodiment, if Figure 1 , Figure 2 as well as Figure 4 As shown, the heat dissipation base 1 includes a heat sink 12 and a substrate 11 . The substrate 11 is pressed onto the heat sink 12 , and the light emitting unit 2 is disposed on the substrate 11 .

[0057] In this embodiment, the heat sink 12 is made of aluminum, which has very good thermal conductivity. Better thermal conductivity means that the light emitting unit 2 can work at a higher power, so that the brightness of the light emitting unit 2 is higher.

[0058] In this embodiment, if Figure 4 As shown, the substrate 11 is made of ceramic material, which has excellent structural stability, high temperature resistance, wear resistance and heat insulation performance. By using it as the substrate 11, the life and performance of the reflective lighting structure can be further improved; further, the ceramic material is made through a dry pressing process, which is made by pressing and high-temperature firing, which further improves its hardness and wear resistance; further, in this embodiment, other metal or non-metal materials can also be used to make the substrate 11, such as an aluminum substrate 11, a copper substrate 11, and a FR-4 grade material substrate, etc. At the same time, the placement of the substrate 11 can also be various, and can be placed horizontally, inclined or vertically; further, the number of the substrates 11 can also be increased or decreased according to actual needs.

[0059] Furthermore, in the present embodiment, the outer contour of the light-transmitting cover 33 is a circular ring, and the light-transmitting cover 33 with a circular ring outer contour can be better assembled with the diffuse reflection cover 32 .

[0060] In the present embodiment, the light-emitting unit 2 adopts a self-packaged light-emitting diode, which can provide sufficient protection for the internal light-emitting structure, and prevent the internal structure from failing due to long-term exposure to the air or mechanical damage, so as to improve the overall stability; at the same time, in the present embodiment, the self-packaged light-emitting diode can also provide good light extraction efficiency and good heat dissipation, so that the light-emitting unit 2 has better light-emitting efficiency and heat dissipation environment, thereby improving the life of the light-emitting diode; further, in the present embodiment, the light-emitting diodes used in the self-packaged light-emitting diodes include ordinary monochrome light-emitting diodes, high-brightness light-emitting diodes, ultra-high brightness light-emitting diodes, color-changing light-emitting diodes, flashing light-emitting diodes, voltage-controlled light-emitting diodes, infrared light-emitting diodes and negative resistance light-emitting diodes, etc., and users can make targeted choices according to different needs and usage scenarios.

[0061] In order to solve the above problems, Figure 1 As shown, the present invention also provides a desk lamp, comprising:

[0062] The above-mentioned reflective lighting structure;

[0063] A light-transmitting shell 4, wherein the light-transmitting shell 4 is light-transmitting from top to bottom and light-impermeable around, and the light-transmitting surface thereof is frosted or translucent to optimize uniformity and blue light, and the light-transmitting shell 4 includes an inner cavity for accommodating the reflective lighting structure, and the reflective lighting structure is disposed in the inner cavity of the light-transmitting shell 4;

[0064] A fixed base 6 and a connecting rod structure 5, two ends of the connecting rod structure 5 are respectively connected to the fixed base 6 and the light-transmitting shell 4, and the light-transmitting shell 4 is supported on the upper side of the fixed base 6, and the reflective lighting structure projects a uniform light spot downward.

[0065] The desk lamp of the present invention uses the above-mentioned reflective lighting structure, so its corresponding emitted light has the advantages of low blue light and soft and uniform light, and is very suitable as a desk lamp to illuminate the user's daily reading, learning, working and other scenes.

[0066] In this embodiment, if Figure 1 as well as Figure 2As shown, the light-transmitting shell 4 includes an upper shell 42 and a lower shell 41, the lower shell 41 is fixed to the heat dissipation base 1 of the reflective lighting structure by a threaded connection, and the upper shell 42 is engaged with the lower shell 41 by a buckle. The structural design of the upper and lower shells of the light-transmitting shell 4 is convenient for the installation of the reflective lighting structure. At the same time, a light-transmitting grid 421 is also provided on the top of the upper shell 42. The outgoing light of the light-emitting unit 2 can be emitted from the upper shell 42 through the light-transmitting cover 33, so as to further improve the light-transmitting effect of the upper shell 42. At the same time, this embodiment can also reduce part of the blue light by emitting a part of the light directly from the light-transmitting cover 33, so as to avoid the user's glasses directly receiving the blue light when using the desk lamp.

[0067] In the present embodiment, the desk lamp further includes an electric control unit, and the fixed base 6 includes an inner cavity for accommodating the electric control unit. The electric control unit is arranged in the inner cavity of the fixed base 6, and the switching and brightness of the desk lamp are controlled by the electric control unit; further, in the present embodiment, the desk lamp further includes a power supply cable, and the power supply cable is led out from the electric control unit and connected to a power source. At the same time, the electric control unit is connected to the self-packaged light emitting diode of the reflective lighting structure and provides it with electric control signals and energy.

[0068] In this embodiment, if Figure 1 As shown, the connecting rod structure 5 includes a first connecting rod 51 and a second connecting rod 52 which are hinged to each other at one end, the other end of the first connecting rod 51 is hinged to the fixed base 6, and the other end of the second connecting rod 52 is hinged to the light-transmitting shell 4. The relative angles of the first connecting rod 51, the second connecting rod 52, the fixed base 6 and the light-transmitting shell 4 on both sides of each hinge point are adjusted to achieve the effect of adjusting different postures of the desk lamp, so as to be suitable for different usage habits and different usage scenarios of different users, thereby improving the applicability of the desk lamp; further, in this embodiment, a locking piece is provided at each hinge point. When the user completes the posture adjustment of the desk lamp, the corresponding hinge structure is locked by the locking piece, so that the desk lamp can stably maintain the desired posture.

[0069] In summary, the reflective lighting structure and desk lamp of the present invention utilize the characteristics of diffuse reflection to provide healthier and more uniform lighting, solving the problems of excessive blue light, harsh light, and poor uniformity in direct-lighting and side-lighting desk lamps in the prior art. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0070] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A reflective lighting structure, characterized in that: include: Heat dissipation base (1); A light emitting unit (2), the light emitting unit (2) being arranged on the top of the heat dissipation base (1); A reflective lampshade (3), wherein the reflective lampshade (3) is disposed on the light-emitting unit (2), and the inner wall of the reflective lampshade (3) is provided with a mirror reflection arc surface and a diffuse reflection arc surface, wherein the mirror reflection arc surface is disposed on the inner wall at the bottom end of the reflective lampshade (3), and the diffuse reflection arc surface is disposed on the inner wall at the top end of the reflective lampshade (3), and a portion of the light emitted from the light-emitting unit (2) is directly emitted to the diffuse reflection arc surface, and another portion of the light is reflected by the mirror reflection arc surface and then emitted to the diffuse reflection arc surface, and at the same time, the outer contour of the diffuse reflection arc surface is butterfly-shaped, and the lower edge of the reflective lampshade (3) is rectangular, so that the outer contour of the butterfly shape satisfies the requirement that the diffuse reflection arc surface reflects light more uniformly downwards, and at the same time, all light reflected downwards is limited by the lower edge of the reflective lampshade (3), and the light is reflected by the diffuse reflection arc surface and emitted from the bottom of the reflective lampshade (3) to form a uniform rectangular light spot.

2. The reflective lighting structure according to claim 1, characterized in that: The reflective lampshade (3) comprises a mirror reflection cover (31) and a diffuse reflection cover (32), wherein the diffuse reflection cover (32) is clamped on the top of the mirror reflection cover (31), and the mirror reflection arc surface and the diffuse reflection arc surface are respectively arranged on the inner walls of the mirror reflection cover (31) and the diffuse reflection cover (32).

3. The reflective lighting structure according to claim 2, characterized in that: The reflective lampshade (3) further comprises a light-transmitting cover (33), wherein the light-transmitting cover (33) is clamped on the mirror reflective cover (31), and a part of the light emitted from the light-emitting unit (2) is directly emitted from the light-transmitting cover (33).

4. The reflective lighting structure according to claim 1, characterized in that: The heat dissipation base (1) comprises a heat sink (12) and a substrate (11); the substrate (11) is pressed onto the heat sink (12); and the light-emitting unit (2) is arranged on the substrate (11).

5. The reflective lighting structure according to claim 4, characterized in that: The radiator (12) is made of aluminum.

6. The reflective lighting structure according to claim 4, characterized in that: The substrate (11) is made of ceramic material.

7. A desk lamp, characterized in that: include: The reflective lighting structure according to any one of claims 1 to 7; A light-transmitting shell (4), wherein the light-transmitting shell (4) is light-transmitting from top to bottom and light-impermeable from the periphery, and the light-transmitting surface thereof is frosted or semi-transparent to optimize uniformity and blue light, wherein the light-transmitting shell (4) comprises an inner cavity for accommodating the reflective lighting structure, and the reflective lighting structure is arranged in the inner cavity of the light-transmitting shell (4); A fixed base (6) and a connecting rod structure (5), wherein two ends of the connecting rod structure (5) are respectively connected to the fixed base (6) and the light-transmitting shell (4), and the light-transmitting shell (4) is supported on the upper side of the fixed base (6), and the reflective lighting structure projects a uniform light spot downwards.

8. The table lamp according to claim 7, characterized in that: The desk lamp further comprises an electric control unit, the fixed base (6) comprises an inner cavity for accommodating the electric control unit, and the electric control unit is arranged in the inner cavity of the fixed base (6).

9. The table lamp according to claim 7, characterized in that: The connecting rod structure (5) comprises a first connecting rod (51) and a second connecting rod (52) which are hinged to each other, the other end of the first connecting rod (51) is hinged to the fixed base (6), and the other end of the second connecting rod (52) is hinged to the light-transmitting shell (4). The relative angles of the first connecting rod (51), the second connecting rod (52), the fixed base (6) and the light-transmitting shell (4) on both sides of each hinge point are adjusted, thereby achieving the effect of adjusting different postures of the desk lamp.

10. The table lamp according to claim 9, characterized in that: The desk lamp further comprises locking members arranged at each hinge point. When the user completes adjusting the posture of the desk lamp, the locking members are used to lock the corresponding hinge structure so that the desk lamp can stably maintain the desired posture.