Low-position lighting equipment

Abstract

The invention relates to the field of lighting equipment, and particularly discloses low-position lighting equipment which comprises a main light source and a polarization module, the polarization module comprises a first refraction unit, a second refraction unit and a reflection unit, and the first refraction unit is used for refracting light emitted by the main light source to a first area; the first refraction unit is used for refracting light emitted by the main light source to a first area, the second refraction unit is used for refracting light emitted by the main light source to a second area, the reflection unit is used for reflecting light emitted by the main light source to a third area, and the third area is located under the low-position lighting equipment and behind the low-position lighting equipment. The second region is located in front of the third region and is adjacent to the third region, and the first region is located in front of the second region and is adjacent to the second region. By the adoption of the lamp, the height of the lamp can be reduced on the premise that relevant national lighting standards are met, the occupied space of the lamp is reduced, and the portability of the lamp is improved.

Description

Technical Field

[0001] The invention relates to a lighting device, in particular to a low-position lighting device. Background Art

[0002] A desk lamp is a common lamp placed on a desktop to provide local illumination. Most of the desk lamps on the market currently have additional weights to stabilize them on the desktop. They are also large in size and high in height, which reduces portability. The high light-emitting surface height can easily cause glare problems during use and cause visual fatigue when the light-emitting surface shines on the human eye, affecting consumers' daily use. Therefore, it is necessary to propose a desk lamp with a low light-emitting surface height.

[0003] According to the uniformity test range of desk lamps shown in the national standard document GB / T 9473-2022 "Performance Requirements for Desk Lamps for Reading and Writing Tasks". Without instructions, the vertical projection point of the geometric center of the light-emitting surface of the desk lamp will coincide with the center position of the upper edge of the central area rectangle. Under the premise of instructions, the vertical projection point of the geometric center of the light-emitting surface of the desk lamp can be placed outside the central area rectangle. If the light-emitting surface is lowered and a more compact straight tube structure is adopted, it is difficult to illuminate the rear of the lamp and the farthest position of the test surface under this condition, and the above national standard requirements cannot be met. Summary of the invention

[0004] In order to solve the defects of the prior art, the present invention provides a low-position lighting device, which can reduce the height of the lamp, reduce the space occupied by the lamp, and improve the portability of the lamp while meeting the relevant national lighting standards.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a low-position lighting device, including a main light source and a polarizing module, wherein the main light source is arranged at the incident surface of the polarizing module, and is used to emit light to the polarizing module; the polarizing module includes a first refraction unit, a second refraction unit and a reflection unit, the first refraction unit is used to refract the light emitted by the main light source to a first area; the second refraction unit is used to refract the light emitted by the main light source to a second area, and the reflection unit is used to reflect the light emitted by the main light source to a third area, wherein the third area is located directly below the low-position lighting device and behind the low-position lighting device, the second area is located in front of the third area and adjacent to the third area, and the first area is located in front of the second area and adjacent to the second area.

[0006] As an improvement of the above-mentioned scheme, the polarizing module has a light-transmitting body, and the first refraction unit, the second refraction unit and the reflection unit are all arranged on the light-transmitting body; the first refraction unit and the second refraction unit are both arranged horizontally, and the reflection unit is arranged vertically; the first refraction unit is arranged on the side of the second refraction unit close to the main light source, and the reflection unit is arranged on the side of the second refraction unit away from the main light source.

[0007] As an improvement of the above solution, the first refraction unit is a sawtooth-shaped recessed structure arranged on the surface of the light-transmitting body.

[0008] As an improvement of the above solution, the second refraction unit is an overlapping rice-grain-shaped structure disposed on the surface of the light-transmitting body.

[0009] As an improvement of the above solution, the reflection unit is a first light reflecting structure arranged on the side of the light-transmitting body.

[0010] As an improvement of the above solution, a V-shaped incident surface is provided on one side of the light-transmitting body, and the main light source is arranged facing the V-shaped incident surface at a preset inclination angle; and a second reflective structure is provided above the light-transmitting body.

[0011] As an improvement of the above solution, the first refraction unit is used to refract the light emitted by the main light source to the first area, which means that after the light emitted by the main light source enters the light-transmitting body, it is refracted by the sawtooth recessed structure and then emitted downward to reach the first area.

[0012] As an improvement of the above-mentioned scheme, the second refraction unit is used to refract the light emitted by the main light source to the second area, which means that after the light emitted by the main light source enters the light-transmitting body, it is refracted by the overlapping rice-grain-shaped structure and then emitted downward to reach the second area; after part of the light leaves the overlapping rice-grain-shaped structure upward, it is reflected by the second reflective structure and enters the overlapping rice-grain-shaped structure, and is refracted again to reach the second area.

[0013] As an improvement of the above scheme, the reflecting unit is used to reflect the light emitted by the main light source to the third area, which means that the light emitted by the main light source enters the transparent body and reaches the side of the transparent body, and then reaches the third area after being reflected by the first reflecting structure located on the side of the transparent body.

[0014] As an improvement of the above scheme, a fill light module is further provided under the polarizing module, and the fill light module includes a fill light source and a reflective bowl. The light emitted by the fill light source is reflected by the reflective bowl, passes through the polarizing module, re-enters the polarizing module after being reflected by the second reflective structure, and reaches the second area after being scattered by the polarizing module.

[0015] Implementing the embodiments of the present invention has the following beneficial effects:

[0016] The above structure can reduce the height of the lamp, reduce the space occupied by the lamp, and improve the portability of the lamp while meeting the national standard "Performance Requirements for Reading and Writing Desk Lamps". In addition, by refracting or reflecting the light through three sets of light processing structures with different structures, a second area with higher brightness and a first area and a third area with lower brightness that meet the national standard can be formed, thereby reducing glare and protecting the user's eyesight. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a diagram of the irradiation area divided by the present invention according to the national standard "Performance Requirements for Reading and Writing Desk Lamps";

[0018] Figure 2 It is a schematic diagram of the main structure of an embodiment of a low-position lighting device of the present invention;

[0019] Figure 3 It is a schematic diagram of the assembly state of the polarizing module and the outer shell of the present invention;

[0020] Figure 4 is a light path diagram of the polarizing module of the present invention;

[0021] Figure 5 is a light path simulation diagram of the first refraction unit of the present invention;

[0022] Figure 6 is a light path simulation diagram of the second refraction unit of the present invention;

[0023] Figure 7 is a light path simulation diagram of the reflection unit of the present invention;

[0024] Figure 8 is a cross-sectional view of another embodiment of the present invention;

[0025] Fig. 9 The present invention discloses an illumination test diagram of a low-position lighting device. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that the directional terms such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the present invention are only based on the accompanying drawings of the present invention, and are not specific limitations of the present invention.

[0027] like Figure 1As shown, the present invention divides the illumination range of the lamp into different areas according to the desk lamp uniformity test range shown in the national standard document GB / T 9473-2022 "Performance requirements for desk lamps for reading and writing tasks", including a first area 100 located at the front of the periphery, a second area 200 located in the central part, and a third area 300 located at the rear.

[0028] Combination Figure 2 and Figure 3 A specific embodiment of the present invention provides a low-position lighting device, including a main light source 1 and a polarizing module 2, wherein the main light source 1 is arranged at the incident surface of the polarizing module 2, and is used to emit light to the polarizing module 2; the polarizing module 2 includes a first refraction unit 21, a second refraction unit 22 and a reflection unit 23, the first refraction unit 21 is used to refract the light emitted by the main light source 1 to a first area 100; the second refraction unit 22 is used to refract the light emitted by the main light source 1 to a second area 200, and the reflection unit 23 is used to reflect the light emitted by the main light source 1 to a third area 300, wherein the third area 300 is located directly below the low-position lighting device and behind the low-position lighting device, the second area 200 is located in front of the third area 300 and adjacent to the third area 300, and the first area 100 is located in front of the second area 200 and adjacent to the second area 200.

[0029] The above structure can reduce the height of the lamp, reduce the space occupied by the lamp, and improve the portability of the lamp while meeting the national standard "Performance Requirements for Reading and Writing Desk Lamps". In addition, by refracting or reflecting the light through three sets of light processing structures with different structures, a second area 200 with higher brightness and a first area 100 and a third area 300 with lower brightness but meeting the national standard can be formed, thereby reducing glare and protecting the user's eyesight.

[0030] Specifically, Figure 4As shown, the polarizing module 2 has a light-transmitting body 24, and the first refraction unit 21, the second refraction unit 22 and the reflection unit 23 are all arranged on the light-transmitting body 24; the first refraction unit 21 and the second refraction unit 22 are both arranged horizontally, and the reflection unit 23 is arranged vertically; the first refraction unit 21 is arranged on the side of the second refraction unit 22 close to the main light source 1, and the reflection unit 23 is arranged on the side of the second refraction unit 22 away from the main light source 1. A V-shaped incident surface 241 is provided on one side of the light-transmitting body 24, and the main light source 1 is arranged facing the V-shaped incident surface 241 at a preset inclination angle; a second reflective structure 25 is provided above the light-transmitting body 24. The light generated by the main light source 1 is incident upward at a certain angle from the V-shaped incident surface 241, and is refracted and / or reflected by the first refraction unit 21, the second refraction unit 22 and the reflection unit 23, and then emitted downward to form different light spots. Among them, in Figure 4 In the figure, the main light path of the light passing through the first refraction unit 21 is shown with red lines, the main light path of the light passing through the second refraction unit 22 is shown with yellow lines, and the main light path of the light passing through the reflection unit 23 is shown with blue lines.

[0031] Since the LED light source is a Lambertian illuminant, it will emit light at an angle of 120 degrees. Therefore, light at different angles will pass through different microstructure surfaces. When designing this lens, the depth between different microstructures is optimized, so that the light passes through three different polarization structures in the lens, so that it can be divided into three parts for emission. The microstructure depth of the first part is the shallowest. When the light is incident, part of the light passes through the jagged depression and undergoes the first light deflection. The second part of the polarization structure is an overlapping rice-grain-shaped depression. This shape structure accounts for a large proportion and is mainly responsible for deflecting the light to a larger central area. The third part of the polarization mainly relies on the reflective structure at the edge to reflect the light to the back of the lamp.

[0032] As an embodiment of the present invention, Figure 5 As shown, the first refraction unit 21 is a sawtooth-shaped recessed structure provided on the surface of the light-transmitting body 24. After the light emitted by the main light source 1 enters the light-transmitting body 24, it is refracted by the sawtooth-shaped recessed structure and then emitted downward to reach the first area 100, that is, the working surface at 400mm-500mm in the figure. Preferably, the recessed structure is arranged in parallel with the V-shaped incident surface 241, and is arranged symmetrically in the trapezoidal area outside the V-shaped incident surface 241. Through the design of the above-mentioned arrangement position and arrangement shape, the light can be concentrated on the working surface outside the second area 200, surrounding the second area 200, to avoid excessive outward diffusion of light and affect the brightness of the second area 200.

[0033] As an embodiment of the present invention, Figure 6As shown, the second refraction unit 22 is an overlapping rice-grain-shaped structure provided on the surface of the light-transmitting body 24. Specifically, the second refraction unit 22 is formed by overlapping and arranging rice-grain-shaped arc-shaped concave structures. After the light emitted by the main light source 1 enters the light-transmitting body 24, it is refracted by the overlapping rice-grain-shaped structure and then emitted downward to reach the second area 200; after part of the light leaves the overlapping rice-grain-shaped structure upward, it is reflected by the second reflective structure 25 and enters the overlapping rice-grain-shaped structure, and is refracted again to reach the second area 200, concentrating the light in the 100mm-400mm area of ​​the working surface. By adopting the above-mentioned second refraction unit 22 in combination with the second reflective structure 25, more light can be concentrated in the main working area of ​​100mm-400mm, providing users with lighting of sufficient brightness.

[0034] More preferably, the second refraction unit 22 is arranged in a semicircular area in front of the first refraction unit 21, and a triangular area 221 extending toward the first refraction unit 21 is provided at the intersection with the first refraction unit 21. Since the light of the present lighting device is mainly emitted toward the front of the present device, the triangular area 221 can compensate for the illumination on both sides of the rear of the second area 200, so that the two sides of the second area 200 close to the bottom of the present lighting device can still provide sufficient brightness, thereby improving the brightness uniformity of the second area 200.

[0035] As an embodiment of the present invention, the reflection unit 23 is a first reflective structure provided on the side of the light-transmitting body 24. The first reflective structure is formed by a reflective paper pasted on the inner side of the outer shell 3 of the polarizing module 2, and the second reflective structure 25 is formed by a reflective paper pasted on the bottom surface of the outer shell 3 of the polarizing module 2. Figure 7 As shown, the light emitted by the main light source 1 enters the transparent body 24 and reaches the side of the transparent body 24 , and is reflected by the first reflective structure located on the side of the transparent body 24 to reach the third area 300 , that is, the working surface at 0-100 mm.

[0036] Combination Figure 8 As shown, as another embodiment of the present invention, the difference from the above embodiment is that a fill light module 4 is further provided under the polarizing module 2, and the fill light module 4 includes a fill light source 41 and a reflective bowl 42. The light emitted by the fill light source 41 is reflected by the reflective bowl 42, passes through the polarizing module 2, re-enters the polarizing module 2 after being reflected by the second reflective structure 25, and reaches the second area 200 after being scattered by the polarizing module 2.

[0037] It should be noted that the range of 100-400mm is the test center area, which is also the main use area of ​​the desk lamp. Therefore, the requirements for illumination and uniformity in this area are more stringent. The polarizing module divides the light emitted by the light source into three, which reduces the illumination of the central area. Therefore, it is necessary to add a fill light module 4 to supplement the light. The reflective module is tilted inside the structure in the form of a reflective bowl 42. The fill light source 41 is perpendicular to the square of the reflective bowl 42. When the light source emits light, the light is reflected upward by the reflective bowl 42 for the first time to the second reflective structure 25 of the lamp head part, and then reflected for the second time on the reflective paper. The light reflected downward is diffused by the microstructure on the surface of the polarizing module 2 and then illuminates the central area of ​​100-400mm, thereby improving the illumination of the main working surface.

[0038] Compared with the desk lamp products in the prior art, the present invention greatly reduces the height of the light-emitting surface of the desk lamp, reducing the hazards of glare. At the same time, the overall volume and weight of the desk lamp are reduced, making it more portable. However, lowering the height of the light-emitting surface will reduce the irradiation area and affect the overall uniformity. The present invention expands the irradiation range of the light source and achieves uniform distribution of illumination by designing a polarized lens, combining a reflective structure and a fill light module 4. By using this embodiment, the total height of the lamp can be controlled below 250mm, and at this height, the lighting effect meets the national standard "Performance Requirements for Reading and Writing Desk Lamps". Fig. 9 As shown, this embodiment uses a lamp with a total height of 230mm for lighting testing, and the results are shown in the figure below. After calculation, the uniformity of the central area is less than or equal to 3, the minimum illumination is greater than 500l x, the uniformity of the total area is less than or equal to 7, and the minimum illumination is greater than 250l x, which meets the national AA standard.

[0039] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A low-level lighting device, It is characterized in that It includes a main light source and a polarizing module, wherein the main light source is arranged at the incident surface of the polarizing module and is used to emit light to the polarizing module; The polarizing module comprises a first refraction unit, a second refraction unit and a reflection unit, wherein the first refraction unit is used to refract the light emitted by the main light source to the first area; The second refraction unit is used to refract the light emitted by the main light source to the second area, and the reflection unit is used to reflect the light emitted by the main light source to the third area. The third area is located directly below and behind the low-position lighting device, the second area is located in front of and adjacent to the third area, and the first area is located in front of and adjacent to the second area.

2. The low-position lighting device according to claim 1, It is characterized in that The polarizing module has a light-transmitting body, and the first refraction unit, the second refraction unit and the reflection unit are all arranged on the light-transmitting body; the first refraction unit and the second refraction unit are both arranged horizontally, and the reflection unit is arranged vertically; the first refraction unit is arranged on a side of the second refraction unit close to the main light source, and the reflection unit is arranged on a side of the second refraction unit away from the main light source.

3. The low-position lighting device according to claim 2, It is characterized in that The first refraction unit is a sawtooth-shaped concave structure disposed on the surface of the light-transmitting body.

4. The low-position lighting device according to claim 2, It is characterized in that The second refraction unit is disposed on the surface of the light-transmitting body and has an overlapping rice-grain-shaped structure.

5. The low-position lighting device according to claim 2, It is characterized in that The reflection unit is a first light reflecting structure arranged on the side surface of the light-transmitting body.

6. The low-position lighting device according to claim 2, It is characterized in that A V-shaped incident surface is provided on one side of the light-transmitting body, and the main light source is arranged facing the V-shaped incident surface at a preset inclination angle; a second reflective structure is provided above the light-transmitting body.

7. The low-position lighting device according to claim 3, It is characterized in that The first refraction unit is used to refract the light emitted by the main light source to the first area, which means that after the light emitted by the main light source enters the light-transmitting body, it is refracted by the sawtooth-shaped concave structure and then emitted downward to reach the first area.

8. The low-position lighting device according to claim 4, It is characterized in that The second refraction unit is used to refract the light emitted by the main light source to the second area, which means that after the light emitted by the main light source enters the light-transmitting body, it is refracted by the overlapping rice-grain-shaped structure and then emitted downward to reach the second area; after part of the light leaves the overlapping rice-grain-shaped structure upward, it is reflected by the second reflective structure and enters the overlapping rice-grain-shaped structure, and is refracted again to reach the second area.

9. The low-position lighting device according to claim 5, It is characterized in that The reflecting unit is used to reflect the light emitted by the main light source to the third area, which means that the light emitted by the main light source enters the transparent body and reaches the side of the transparent body, and is reflected by the first reflecting structure located on the side of the transparent body to reach the third area.

10. The low-position lighting device according to claim 6, It is characterized in that A fill light module is also provided below the polarizing module, and the fill light module includes a fill light source and a reflective bowl. The light emitted by the fill light source is reflected by the reflective bowl, passes through the polarizing module, re-enters the polarizing module after being reflected by the second reflective structure, and reaches the second area after being scattered by the polarizing module.

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