CN115681845A - Subtraction desk lamp - Google Patents

Subtraction desk lamp Download PDF

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Publication number
CN115681845A
CN115681845A CN202211173288.3A CN202211173288A CN115681845A CN 115681845 A CN115681845 A CN 115681845A CN 202211173288 A CN202211173288 A CN 202211173288A CN 115681845 A CN115681845 A CN 115681845A
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China
Prior art keywords
light emitting
light
lamp
emitting
illuminated
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CN202211173288.3A
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Chinese (zh)
Inventor
李京蔓
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Opple Lighting Co Ltd
Suzhou Op Lighting Co Ltd
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Opple Lighting Co Ltd
Suzhou Op Lighting Co Ltd
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Priority to CN202211173288.3A priority Critical patent/CN115681845A/en
Publication of CN115681845A publication Critical patent/CN115681845A/en
Priority to PCT/CN2023/119634 priority patent/WO2024067240A1/en
Pending legal-status Critical Current

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Abstract

The invention provides a shadow reducing desk lamp which is used for illuminating an illuminated object and comprises a lamp holder, a lamp holder and a lamp post connected with the lamp holder and the lamp holder, wherein the lamp holder is provided with a light emitting plate, part or all of adjacent sides of the light emitting plate are sunken towards one side departing from an illuminated position along the horizontal direction, the light emitting plate comprises a plurality of light emitting areas, each light emitting area is provided with a light emitting center, the light emitting energy of each light emitting area is in direct proportion to the light emitting distance of the light emitting area, the adjacent side of the light emitting plate is one side of the light emitting plate close to the illuminated position, the illuminated position is the position of the illuminated object, and the light emitting distance of each light emitting area is the distance between the light emitting center of the light emitting area and the illuminated position. According to the invention, part or all of the adjacent sides of the light emitting plates are arranged to be inwards concave, and the light emitting energy of each light emitting area is arranged to be in direct proportion to the light emitting distance, so that the multi-angle illumination can be performed on the illuminated position, the illuminated position can be effectively supplemented with light, and the shadow is weakened.

Description

Shadow-reducing desk lamp
Technical Field
The invention relates to a shadow-reducing desk lamp, and belongs to the technical field of lighting lamps.
Background
At present, the shadow is generated because light rays are shielded by an object in the process of linear transmission, so that a shadow is formed on the backlight side of the object, and the table lamp in the market generally has the following problems: when in writing, because of the shielding of the hand, the shadow is generated on the writing surface, and under the condition of writing for a long time, certain visual fatigue can be caused to the eyes, thereby being not beneficial to the work or study of a user.
In view of the above, there is a need for an improved desk lamp to solve the above problems.
Disclosure of Invention
The invention aims to provide a subtraction desk lamp to solve the problem that shadow is generated when the existing desk lamp is used.
In order to achieve the above object, the present invention provides a shading table lamp, which is used for illuminating an object to be illuminated, and includes a lamp holder, a lamp holder and a lamp post connecting the lamp holder and the lamp holder, wherein the lamp holder includes a light emitting plate, part or all of adjacent sides of the light emitting plate are recessed toward a side away from an illuminated position along a horizontal direction, the light emitting plate includes a plurality of light emitting areas, each light emitting area has a light emitting center, and light emitting energy of each light emitting area is proportional to a light emitting distance of the light emitting area, the adjacent side of the light emitting plate is a side of the light emitting plate close to the illuminated position, the illuminated position is a position of the object to be illuminated, and the light emitting distance of each light emitting area is a distance between the light emitting center of the light emitting area and the illuminated position.
Optionally, the light emitting plate is an arc light emitting plate, a light emitting surface is arranged at the bottom of the light emitting plate, the light emitting surface is a plane, the light emitting areas are distributed on the light emitting surface, the light emitting centers are located at geometric centers of the light emitting areas, and a plurality of the light emitting centers form a continuous arc.
Optionally, the light-emitting distances of the light-emitting areas are the same, and the light-emitting energy of the light-emitting areas is also the same.
Optionally, the light emitting plate is a special-shaped light emitting plate, and the bottom of the light emitting plate is provided with a light emitting surface which is an arc surface.
Optionally, the light output energy of the light output area is defined as
Figure BDA0003864229410000021
Defining the light-emitting distance of the light-emitting area as L, then
Figure BDA0003864229410000022
Wherein n is the number of the light emitting areas.
Optionally, an included angle between two ends of the orthographic projection of the light-emitting plate and the illuminated position is 2 θ, wherein 0 ° < θ ≦ 180 °.
Optionally, an included angle between two ends of the orthographic projection of the light-emitting plate and the illuminated position is one of 120 °, 240 ° and 360 °.
Optionally, the light-emitting center has a central orthographic projection on the horizontal plane where the illuminated position is located, a distance between the central orthographic projection and the illuminated position is defined as r, a vertical distance between the light-emitting center and the horizontal plane where the illuminated position is located is defined as H, and then a distance between the illuminated position and the light-emitting center on the light-emitting plate
Figure BDA0003864229410000023
Optionally, the lamp holder corresponds to the light emitting plate in shape, the lamp post includes a first lamp post and a second lamp post, the first lamp post is rotatably connected to the lamp holder, the second lamp post is rotatably connected to the first lamp post, and the lamp holder is rotatably connected to the second lamp post.
Optionally, the lamp cap has a plurality of light sources, light emitted by the light sources passes through light emitting regions of the light emitting plates to be emitted outwards, and each light emitting region corresponds to at least one light source.
The beneficial effects of the invention are: in the shadow-reducing desk lamp provided by the technical scheme of the invention, because part or all of the adjacent sides of the light-emitting plates are set to be concave towards one side away from the illuminated position along the horizontal direction, the illuminated position can be illuminated at multiple angles, and moreover, because the light-emitting energy of each light-emitting area is set to be in direct proportion to the distance between the light-emitting center of the light-emitting area and the illuminated position, the illuminated position can be effectively supplemented with light. Therefore, the subtraction table lamp can effectively supplement light when the position is illuminated by multi-angle illumination, and further, the existence sense of shadow is weakened.
Drawings
Fig. 1 is a schematic perspective view of a subtraction desk lamp according to an embodiment of the invention;
FIG. 2 is a schematic diagram illustrating a relationship between a light emitting panel and an illuminated position according to an embodiment of the present invention;
FIG. 3 is a schematic front view of the light emitting panel and the illuminated location of FIG. 2;
FIG. 4 is a schematic view illustrating a shadow test of the light-emitting plate according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating a comparison of shadow test results of a subtraction desk lamp and a normal desk lamp according to an embodiment of the present invention;
FIG. 6 is a schematic perspective view of a subtraction desk lamp according to another embodiment of the present invention;
FIG. 7 is a schematic view of a light-emitting panel and an illuminated position according to another embodiment of the present invention;
fig. 8 is a schematic orthographic view of the light emitting panel and the illuminated position in fig. 7.
Description of the reference numerals:
100-shadow desk lamp, 1, 10-lamp holder, 11, 101-light emitting plate, 111, 1011-light emitting area, 2-illuminated position, 3-lamp pole, 31-first lamp pole, 32-second lamp pole, 4-lamp holder and 5-rotating shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and fig. 3, a subtraction desk lamp 100 is provided in this embodiment for illuminating an object and reducing shadows generated by the object under light.
The subtraction desk lamp 100 includes: a lamp holder 4, a lamp cap 1 and a lamp post 3 connecting the lamp holder 4 and the lamp cap 1. The light head 1 includes a light emitting plate 11 and a plurality of light sources (not shown).
In this embodiment, the shape of the base 1 corresponds to the shape of the light exit plate 11.
Specifically, part or all of adjacent sides of the light emitting plate 11 are recessed towards a side away from the illuminated position 2 along a horizontal direction, the light emitting plate 11 includes a plurality of light emitting areas 111, each light emitting area 111 has a light emitting center, and the light emitting energy of each light emitting area 111 is proportional to the light emitting distance of the light emitting area 111, wherein the adjacent side of the light emitting plate 11 is the side of the light emitting plate 11 close to the illuminated position 2, the illuminated position 2 is the position of the illuminated object, and the light emitting distance of each light emitting area 111 is the distance between the light emitting center of the light emitting area 111 and the illuminated position 2.
Preferably, the light sources are LED lamp beads, and each light emitting area 111 corresponds to at least one light source, so that light emitted by the light source passes through the light emitting area 111 of the light emitting plate 11 and is emitted outwards.
In the present embodiment, for convenience of description and calculation, the illuminated position 2 is defined as a certain point formed by the illuminated object at the illuminated position 2, and in an actual case, the illuminated position 2 may be an area in which the illuminated objects have a subtraction effect.
In this embodiment, the light emitting center is located at the geometric center of the light emitting region 111, and a complete light emitting surface with uniform light emitting is formed on the light emitting plate 11, and certainly, the complete light emitting surface may also be formed by splicing a plurality of light emitting surfaces with uniform light emitting. As long as it can realize that the light is uniformly emitted outward through the light emitting plate 11, and the invention is not limited thereto.
Specifically, the subtraction desk lamp 100 further includes a plurality of rotating shafts 5, the lamp post 3 includes a first lamp post 31 and a second lamp post 32, the first lamp post 31 is rotatably connected to the lamp holder 4 through the rotating shaft 5, one end of the first lamp post 31 away from the lamp holder 4 is rotatably connected to the second lamp post 32 through the rotating shaft 5, one end of the second lamp post 32 away from the first lamp post 31 is rotatably connected to the lamp holder 1 through the rotating shaft 5, wherein a connection manner and a specific structure between the lamp holder 4, the first lamp post 31, the second lamp post 32 and the lamp holder 1 may be designed according to the prior art.
Referring to fig. 1 to 3, in the present embodiment, the light-emitting plate 11 is an arc-shaped light-emitting plate, the illuminated position 2 is located at the center of the arc, and the bottom of the light-emitting plate 11 has a light-emitting surface which is a plane.
Light-out area 111 distributes on the play plain noodles, the light-out center is located light-out area 111's geometric centre department, and a plurality of light-out center constitutes a continuous pitch arc, make the light-emitting distance of each light-out area 111 the same, it is the same with the distance between each light-out center by position 2, simultaneously, the light-out area 111 that each light-out center corresponds also the same, so set up, make the intensity that the light that emits from light-out area 111 on 2 positions 2 is shone the same on the one hand, on the other hand makes light can shine to position 2 by being shone from a plurality of directions, thereby, can weaken the shade that the unilateral light shines the production.
Specifically, the height of the light-emitting surface is defined as H, that is, the vertical distance between the light-emitting center and the horizontal plane of the illuminated position 2 is defined as H, and the vertical distances between the light-emitting centers and the horizontal plane of the illuminated position 2 are respectively defined as H 1 、H 2 、H 3 、…H n Wherein n in this embodiment is the number of the light-emitting centers or light-emitting areas 111.
In the embodiment, the light-emitting plate 11 is an arc-shaped light-emitting plate, and the light-emitting surface is a plane parallel to the plane of the illuminated position 2, so that the light-emitting centers on the light-emitting surface can form a continuous arc, and correspondingly, H is 1 =H 2 =H 3 =H n
In addition, in this embodiment, the light exit center has a central forward projection on the horizontal plane of the illuminated position 2, and the distance between the central forward projection and the illuminated position 2 is defined as r, and the distances between the illuminated position 2 and the central forward projections are r respectively 1 、r 2 、r 3 、…r n . Since the light emitting plate 11 is in the shape of an arc and the illuminated position 2 is located at the center of the arc, r is 1 =r 2 =r 3 =r n
On the basis, the actual distances between a plurality of light-emitting centers and the illuminated position 2 are respectively defined as L 1 、L 2 、L 3 、…L n According to
Figure BDA0003864229410000051
Thus, L 1 =L 2 =L 3 =L n I.e. the distances between the light-emitting centers and the illuminated position 2 are the same, so as to reduce the shadow caused by the unidirectional light irradiation.
In this embodiment, the number of light sources corresponding to each light-emitting region 111 is the same, and the specification of each light source is also the same, so that the light-emitting energy of each light-emitting region 111 is the same. Of course, in other embodiments, the number of light sources and the specification of the light sources corresponding to each light-emitting region 111 may be different, as long as the light-emitting energies of the light-emitting regions 111 are the same, and the number and the specification of the light sources are not limited herein.
In the orthographic projection direction of the light emitting plate 11, an included angle between two ends of the light emitting plate 11 and the illuminated position 2 is defined as 2 theta, wherein theta is larger than 0 degree and smaller than or equal to 180 degrees. Preferably, the included angle 2 θ is one of 120 °, 240 ° and 360 ° to accommodate different lighting environments.
Specifically, when the included angle 2 θ is 120 °, the object to be illuminated at the illuminated position 2 may generate a partial shadow on a side away from the lamp holder 1, when the included angle 2 θ is 240 °, the object to be illuminated at the illuminated position 2 may generate a weak shadow on a side close to the lamp holder 1, and when the included angle 2 θ is 360 °, that is, the lamp holder 1 is disposed in a ring shape, the object to be illuminated at the illuminated position 2 is completely exposed to light, so that the object to be illuminated may not generate a shadow or generate a shadow that cannot be observed by human eyes.
Of course, in other embodiments, the included angle 2 θ may also be any angle between 0 ° and 360 °, where the included angle 2 θ is not 0 °, so that the subtraction desk lamp 100 can adapt to various different environments, and the specific value of the included angle 2 θ is not limited herein.
Referring to fig. 3, in order to more clearly describe the subtraction principle of the subtraction desk lamp 100, four light-emitting areas 111 are divided on a portion of the light-emitting plate 11 and defined as light-emitting areas aRegion 111, B light exit region 111, C light exit region 111, and D light exit region 111. Wherein, the light in the light emitting area A111 is emitted to the irradiated position 2, and due to the blockage of the irradiated object, the angle formed on the side of the irradiated object far away from the light source is alpha 1 (ii) a shadow of; the light in the B light emitting area 111 irradiates to the irradiated position 2, and due to the blockage of the irradiated object, an angle alpha is formed on one side of the irradiated object far away from the light source 2 Shadow of (a), angle of 1 Is shaded and has an angle of alpha 2 Does not overlap, i.e. the light in the B light-emitting area can be irradiated at an angle alpha 1 The light rays in the a light-exiting region can be irradiated in the shadow of the angle α 2. Similarly, when the light rays in the a light emitting region 111, the B light emitting region 111, the C light emitting region 111, and the D light emitting region 111 strike the irradiated position 2, the angle is α 1 、α 2 、α 3 And alpha 4 The shadow of the object at the illuminated position 2 is not overlapped, namely, the shadow of the object at the illuminated position is weakened.
In this embodiment, since the light emitting plate 11 is arc-shaped, when α is 1 、α 2 、α 3 And alpha 4 When the angles of (a) are the same, the areas of the corresponding a light emission region 111, B light emission region 111, C light emission region 111, and D light emission region 111 are the same.
Referring to fig. 4 and 5, the shadow test is performed on the subtraction desk lamp 100 of the present embodiment and the existing desk lamp respectively, and the test method includes: the shadow-reducing table lamp 100 is placed on a test surface, objects to be illuminated are respectively arranged at positions 300mm and 500mm away from the shadow-reducing table lamp, and the shadow-reducing table lamp 100 is turned on in a dark or dim environment to obtain a shadow schematic diagram a of the objects to be illuminated under the shadow-reducing table lamp 100. And obtaining a shadow schematic diagram b of the object under the existing table lamp in the same way.
In this test, the only variable is the type of table lamp.
Comparing the shadow schematic diagram under the subtraction desk lamp 100 with the shadow schematic diagram under the existing desk lamp, it can be seen that: the subtraction desk lamp 100 in this embodiment has a significant subtraction effect, can improve the lighting effect, and is beneficial to preventing myopia of children and protecting the eyesight of children.
In summary, the subtraction desk lamp 100 sets part or all of the adjacent sides of the light emitting plate 11 to be recessed toward the side away from the illuminated position 2 along the horizontal direction, so that the illuminated position 2 can be illuminated at multiple angles, and moreover, since the light emitting energy of each light emitting area 111 is set to be in direct proportion to the distance between the light emitting center of the light emitting area 111 and the illuminated position 2, light can be effectively supplemented to the illuminated position 2. Thus, the subtraction desk lamp 100 can effectively supplement light when the position 2 is illuminated by multi-angle illumination, and further, the existence sense of shadow is weakened.
Referring to fig. 6 to 8, in another embodiment, the lamp cap 10 has a light emitting plate 101, the light emitting plate 101 is a special-shaped light emitting plate, and the bottom of the light emitting plate 101 has a light emitting surface with an arc surface.
In another embodiment, even alpha 1 、α 2 、α 3 And alpha 4 The angles of (a) and (B) are the same, and the areas of the corresponding a light-emitting region 1011, B light-emitting region 1011, C light-emitting region 1011 and D light-emitting region 1011 may be different.
In another embodiment, the light exiting region 1011 and the light exiting center are both located on the lower surface of the light exiting plate 101, i.e., on the light exiting surface.
Specifically, part of the specially-shaped light emitting plate 101 is also recessed towards the side far away from the illuminated position 2 in the horizontal direction, so that the light emitted by the light emitting areas 1011 can be irradiated on the illuminated position 2, and the illumination of the illuminated object at the illuminated position 2 is realized.
In another embodiment, the shaped light extraction panel 101 may be interpreted as an irregular shaped light extraction panel 101, such as: a concave light emitting plate 101, a light emitting plate 101 having an irregular shape such as a curved shape, and the like.
Specifically, the height of the light emitting plate 101 is defined as H, that is, the vertical distance between the light emitting center and the horizontal plane of the illuminated position 2 is defined as H, and the vertical distance between the light emitting centers and the horizontal plane of the illuminated position 2 is defined as H 1 、H 2 、H 3 、…H n Where n in this embodiment is the number of the light exit centers or light exit areas 1011.
Furthermore, in another embodiment, the light exit center isThe irradiated position 2 has a central orthographic projection on a horizontal plane, the distance between the central orthographic projection and the irradiated position 2 is defined as r, and the distances between the irradiated position 2 and the central orthographic projections are respectively defined as r 1 、r 2 、r 3 、…r n . On the basis, the light-emitting distance of the light-emitting region 1011 is defined as L
Figure BDA0003864229410000071
The linear distances L between the light-emitting centers of the light-emitting plate 101 and the illuminated position 2 can be obtained 1 、L 2 、L 3 、…L n . In addition, the light-emitting region 1011 is defined by the light-emitting energy
Figure BDA0003864229410000081
The light-emitting energy of the light-emitting areas 1011 is
Figure BDA0003864229410000082
In another embodiment, when
Figure BDA0003864229410000083
In this case, the light emitted from the light-emitting areas 1011 irradiates the same energy at the irradiated position 2, so as to reduce the shadow of the irradiated object. That is to say, when the distance between the light exit center and the illuminated position 2 is increased, the light exit energy of the light exit region 111 corresponding to the light exit center is also increased, in other words, the light exit energy of the light exit region 1011 is in direct proportion to the distance between the light exit center of the light exit region 111 and the illuminated position 2, so that each light exit region 1011 performs uniform light supplement on the illuminated object at the illuminated position 2, and the effect of reducing the shadow is achieved.
In another embodiment, since the distances between the light-emitting centers and the illuminated position 2 are different, the light-emitting energies of the light-emitting areas 1011 are set to be different, so that the illuminance of the light emitted from each light-emitting area 1011 when reaching the illuminated position 2 is the same, so as to reduce the shadow of the illuminated position 2 under the desk lamp.
Specifically, the light emitting energy of each light emitting area 1011 is different by setting the number of light sources of each light emitting area 1011 to be different; the light source can be set to different specifications to correspond to different light emitting areas 1011; the light source with variable brightness can be set, and the light emitting energy of the light source can be controlled by controlling the voltage of the light source; the light emitting areas 1011 can also be made of different light-transmitting materials or light-polarizing materials, so that the light emitting energy of the light emitting areas 1011 can be controlled, and the type and specification of the light source are not limited as long as the light emitting energy of each light emitting area 1011 can be controlled.
In the orthographic projection direction of the light emitting plate 101, an included angle between two ends of the light emitting plate 101 and the illuminated position 2 is defined as 2 theta, wherein theta is larger than 0 degree and smaller than or equal to 180 degrees. Preferably, the included angle 2 θ is one of 120 °, 240 ° and 360 ° to accommodate different lighting environments.
Specifically, when the included angle 2 θ is 120 °, the illuminated object at the illuminated position 2 may generate a partial shadow on a side away from the lamp head 10, when the included angle 2 θ is 240 °, the illuminated object at the illuminated position 2 may generate a weak shadow on a side close to the lamp head 10, and when the included angle 2 θ is 360 °, that is, the lamp head 10 is disposed in a ring shape, the illuminated object at the illuminated position 2 is completely exposed to the light, so that the illuminated position 2 may not generate a shadow or a shadow that cannot be observed by human eyes.
In another embodiment, the subtraction principle of the lamp cap 10 is the same as that of the lamp cap 1 in the embodiment shown in fig. 1 to 3, and in addition, the subtraction table lamp using the lamp cap 10 and the subtraction table lamp using the lamp cap 1 have similar shadow test results, which is not described herein again.
In summary, in another embodiment, since part or all of the adjacent sides of the light emitting plate 101 of the subtraction desk lamp 100 are set to be recessed toward the side away from the illuminated position 2 along the horizontal direction, the illuminated position 2 can be illuminated in multiple angles, and moreover, since the light emitting energy of each light emitting area 1011 is set to be proportional to the distance between the light emitting center of the light emitting area 1011 and the illuminated position 2, light can be effectively supplemented to the illuminated position 2. Thus, the subtraction desk lamp 100 can effectively supplement light when the position 2 is illuminated by multi-angle illumination, and further, the existence sense of shadow is weakened.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims (10)

1. A subtraction desk lamp used for illuminating the illuminated object comprises a lamp holder (4), lamp caps (1, 10) and a lamp post (3) connecting the lamp holder (4) and the lamp caps (1, 10),
the lampholder (1, 10) is provided with a light emitting plate (11, 101), part or all of the adjacent side of the light emitting plate (11, 101) is recessed towards the side away from the illuminated position (2) along the horizontal direction, the light emitting plate (11, 101) comprises a plurality of light emitting areas (111, 1011), each light emitting area (111, 1011) is provided with a light emitting center, the light emitting energy of each light emitting area (111, 1011) is in direct proportion to the light emitting distance of the light emitting area (111, 1011), the adjacent side of the light emitting plate (11, 101) is the side of the light emitting plate (11, 101) close to the illuminated position (2), the illuminated position (2) is the position of the illuminated object, and the light emitting distance of each light emitting area (111, 1011) is the distance between the light emitting center of the light emitting area (111, 1011) and the illuminated position (2).
2. A shading desk lamp as claimed in claim 1, wherein the light-emitting plate (11) is a circular arc light-emitting plate, and the bottom of the light-emitting plate (11) has a light-emitting surface, the light-emitting surface is a plane, the light-emitting areas (111) are distributed on the light-emitting surface, the light-emitting centers are located at the geometric centers of the light-emitting areas (111), and a plurality of the light-emitting centers form a continuous arc.
3. A shading desk lamp according to claim 2, wherein the light emitting distance of each light emitting area (111) is the same, and the light emitting energy of each light emitting area (111) is the same.
4. The subtraction desk lamp as claimed in claim 1, wherein the light emitting plate (101) is a shaped light emitting plate, and the bottom of the light emitting plate (101) has a light emitting surface which is a cambered surface.
5. A shading desk lamp according to claim 4, wherein the light emitting energy defining the light emitting area (1011) is
Figure FDA0003864229400000011
Defining the light-emitting distance of the light-emitting region (1011) as L
Figure FDA0003864229400000012
Figure FDA0003864229400000013
Wherein n is the number of the light emitting areas (1011).
6. A subtraction desk lamp as claimed in claim 2 or 4, characterized in that the angle between the two ends of the orthographic projection of the light emitting panel (11, 101) and the illuminated position (2) is 2 θ, where 0 ° < θ ≦ 180 °.
7. A subtraction desk lamp as claimed in claim 6, characterized in that the angle between the two ends of the orthographic projection of the light extraction panel (11, 101) and the illuminated position (2) is one of 120 °, 240 ° and 360 °.
8. A subtraction desk lamp as claimed in claim 2 or 4, wherein the light exit center has a central forward projection on the horizontal plane of the illuminated position (2), the distance between the central forward projection and the illuminated position (2) is defined as r, the vertical distance between the light exit center and the horizontal plane of the illuminated position (2) is defined as H, and then the illuminated position (2) and the light exit plate (11, 101) have a central forward projection in the light exitDistance between the hearts
Figure FDA0003864229400000021
9. A shading desk lamp according to claim 1, wherein the lamp head (1, 10) corresponds to the shape of the light emitting plate (11, 101), the lamp post (3) comprises a first lamp post (31) and a second lamp post (32), the first lamp post (31) is rotatably connected with the lamp holder (4), the second lamp post (32) is rotatably connected with the first lamp post (31), and the lamp head (1, 10) is rotatably connected with the second lamp post (32).
10. A subtraction desk lamp as claimed in claim 1, wherein the lamp head (1, 10) has a plurality of light sources, the light emitted from the light sources is emitted outwards through light emitting areas (111, 1011) of the light emitting plate (11, 101), and each light emitting area (111, 1011) corresponds to at least one light source.
CN202211173288.3A 2022-09-26 2022-09-26 Subtraction desk lamp Pending CN115681845A (en)

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CN202211173288.3A CN115681845A (en) 2022-09-26 2022-09-26 Subtraction desk lamp
PCT/CN2023/119634 WO2024067240A1 (en) 2022-09-26 2023-09-19 Shadow-reducing desk lamp

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Application Number Priority Date Filing Date Title
CN202211173288.3A CN115681845A (en) 2022-09-26 2022-09-26 Subtraction desk lamp

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CN115681845A true CN115681845A (en) 2023-02-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024067240A1 (en) * 2022-09-26 2024-04-04 苏州欧普照明有限公司 Shadow-reducing desk lamp

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024067240A1 (en) * 2022-09-26 2024-04-04 苏州欧普照明有限公司 Shadow-reducing desk lamp

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