CN112923259A

CN112923259A - Desk lamp

Info

Publication number: CN112923259A
Application number: CN201911244937.2A
Authority: CN
Inventors: 黄芳; 林建宗; 陈云伟
Original assignee: Xiamen Lidaxin Lighting Co ltd
Current assignee: Xiamen Lidaxin Lighting Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2021-06-08

Abstract

The invention provides a desk lamp, which comprises a lamp shell, a light source and a reflecting piece, wherein the lamp shell is provided with a light source hole; the lamp shell is in a straight line or a broken line shape and is provided with a bottom surface facing the desktop; the multiple groups of light sources are respectively arranged on two sides of the bottom surface along the width direction of the lamp shell, and the light emitting surfaces of the light sources respectively arranged on the two sides are opposite to each other; the top end of the reflecting piece, which is far away from the desktop, is connected with the bottom surface, the reflecting piece is provided with two reflecting surfaces which are back to back, and each reflecting surface is opposite to the light-emitting surface of the light source on the corresponding side; the length extending directions of the light source and the reflecting piece are consistent with the extending direction of the lamp shell; the reflecting surface comprises an arc-shaped part and an inclined part which are mutually connected, and the arc-shaped part is adjacent to the lamp shell and is arranged in a concave manner relative to the light source on the corresponding side; the inclined part is far away from the lamp shell and is arranged to the light source on the corresponding side in the direction towards the lamp shell in an inclined mode; according to the technical scheme, the light emitted by the light source is reflected by the arc-shaped part and the inclined part and then is emitted to the desktop, so that the effects of no glare and uniform illumination are achieved, and the irradiation range is large.

Description

Desk lamp

Technical Field

The invention belongs to the technical field of lamps, and particularly relates to a desk lamp.

Background

In today's learning and work, table lamps are used in many situations. However, in the existing common table lamp on the market, due to the problems in light source and structural design, there are also disadvantages of glare, uneven illumination, and insufficient illumination range, so that when the table lamp works and studies, the image is blurred, reading is hard, people feel uncomfortable, and the problems of eye fatigue, reduced reading efficiency, even soreness and headache of eyes are easily caused.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a desk lamp, which aims to solve the problems that the existing desk lamp has glare, the illumination is not uniform enough and the illumination range is small.

The invention provides a desk lamp, comprising:

the lamp shell is linear or broken line-shaped and is provided with a bottom surface facing the desktop;

the light sources are respectively arranged on two sides of the bottom surface along the width direction of the lamp shell, and the light emergent surfaces of the light sources respectively arranged on the two sides are opposite to each other; and the number of the first and second groups,

the top end of the reflecting piece, which is far away from the desktop, is connected with the bottom surface, the reflecting piece is provided with two reflecting surfaces which are opposite to each other, and each reflecting surface is opposite to the light-emitting surface of the light source on the corresponding side;

the length extending directions of the light source and the reflecting piece are consistent with the extending direction of the lamp shell; the reflecting surface comprises an arc-shaped part and an inclined part which are mutually connected, and the arc-shaped part is adjacent to the lamp shell and is arranged in a concave manner relative to the light source on the corresponding side; the inclined part is far away from the lamp shell and is arranged obliquely to the light source on the corresponding side along the direction towards the lamp shell; the light emitted by the light source is reflected by the arc-shaped part and the inclined part and then emitted to the desktop.

Optionally, the radian range of the arc-shaped part is 15 ± 2rad, an included angle a is formed between the inclined part and the vertical direction perpendicular to the desktop, and the angle range of the included angle a is 8 ± 2 °.

Optionally, each the light source include length extending direction with the unanimous base plate of lamp body with locate on the base plate and along a plurality of lamp pearls of length direction interval arrangement, the base plate with contained angle B has between the vertical direction, contained angle B's angular scope is 3 0.5.

Optionally, the bottom surface has a first lower side edge facing the table top, the inclined portion has a second lower side edge facing the table top, and on a vertical cross section of the table lamp, a connecting line between a corresponding point of the first lower side edge and a corresponding point of the second lower side edge forms an included angle D with a plane where the table top is located, and an angle range of the included angle D is 45 ± 3 °.

Optionally, the desk lamp further comprises a diffusion plate having a length extending direction consistent with the substrate, and the diffusion plate is located between the light source and the reflection surface on the corresponding side, and is installed on the bottom surface to be parallel to the substrate at an interval.

Optionally, the bottom surface has a mounting area adjacent to the first lower edge, the mounting area is provided with a first mounting groove, a second mounting groove and a spacing groove, the bottoms of the first mounting groove, the second mounting groove and the spacing groove face the reflecting surface of the corresponding side, the spacing groove is provided at the bottom of the first mounting groove, the second mounting groove is provided at the bottom of the spacing groove, the substrate is mounted in the second mounting groove, and the diffusion plate is mounted in the first mounting groove.

Optionally, the desk lamp further comprises a light guide plate, the length extending direction of the light guide plate is consistent with that of the reflecting piece, and the light guide plate faces towards the upper end of the bottom face and the reflecting piece faces towards the lower end of the desktop and is detachably connected with the lower end of the desktop.

Optionally, the lamp body is along the uncovered setting of length direction's at least one end, the middle part of bottom surface is equipped with towards the desktop protrusion and follows the smooth protruding that the length direction of lamp body extends, the reflection part orientation the top of bottom surface is equipped with and supplies the spout that the protruding adaptation of sliding slided into the joint.

Optionally, the desk lamp still includes the side cap, the lamp body all is uncovered setting along length direction's both ends to the adaptation lid closes the side cap.

Optionally, the desk lamp further comprises at least two supporting columns, the supporting columns are far away from the upper end of the desktop and connected with the end portions of the lamp housing, and connecting columns used for limiting and connecting with the desktop are arranged on the end faces of the lower ends of the supporting columns.

Based on the structural design, in the technical scheme of the invention, because the light source and the corresponding reflecting surface are arranged on the two sides of the bottom surface of the lamp shell along the width direction, the light source on one side of a desk lamp user can be prevented from directly facing eyes, most of light emitted from the light source can be secondarily reflected through the arc-shaped part of the emitting surface, and the small part of the light can be directly reflected through the inclined part for one time, so that the propagation direction of the light can be effectively changed, the anti-glare effect can be achieved, and the light in the area with higher light concentration degree can be more uniformly dispersed through the action of multiple reflections, so that the effect of uniform illumination is achieved, the irradiation range is very large, and the A level of the reading illumination standard of the desk lamp can be achieved. In addition, because the lamp body is provided with the light source and the corresponding reflecting surface along the two sides of the width direction, the desk lamp is more suitable for a larger desktop, when the desk lamp is placed in the middle of the desktop, the two sides of the desk lamp can be illuminated by the desk lamp, so that the integrated use of the lamp can be realized, and the use cost can be reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a desk lamp provided by an embodiment of the invention;

fig. 2 is an exploded view of a desk lamp according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional structure view of the desk lamp provided by the embodiment of the invention, taken along the width direction of the lamp housing;

fig. 4 is a graph of the illuminance of the light of the desk lamp on the desk according to the embodiment of the invention.

The reference numbers illustrate:

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner" and "outer" etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment of the invention provides a desk lamp.

Referring to fig. 2 and 3, in an embodiment, the desk lamp includes a lamp housing 100, two sets of light sources 200, and a reflector 300; the lamp housing 100 is linear or zigzag, and has a bottom surface 110 facing the table top; the two groups of light sources 200 are respectively arranged on two sides of the bottom surface 110 along the width direction of the lamp housing 100, and light emitting surfaces of the two groups of light sources 200 are arranged oppositely; the top end of the reflection member 300 departing from the desktop is connected to the bottom surface 110, the reflection member 300 has two opposite reflection surfaces 310, and each reflection surface 310 is opposite to the light emitting surface of the light source 200 on the corresponding side; the length extending directions of the light source 200 and the reflector 300 are consistent with the extending direction of the lamp housing 100; the reflecting surface 310 comprises an arc-shaped part 311 and an inclined part 312 which are connected with each other, the arc-shaped part 311 is adjacent to the lamp housing 100 and is arranged in a concave manner relative to the light source 200 on the corresponding side; the inclined portion 312 is away from the lamp housing 100 and is inclined toward the light source 200 on the corresponding side in the direction toward the lamp housing 100; the light emitted from the light source 200 is reflected by the arc portion 311 twice and reflected by the inclined portion 312 once, and then emitted to the desktop.

Based on the structural design, in the embodiment, since the light source 200 and the corresponding reflection surface 310 are disposed on both sides of the bottom surface 110 of the lamp housing 100 along the width direction, the light source 200 on one side of the desk lamp user can be prevented from directly facing the eyes, most of the light emitted from the light source 200 can be reflected secondarily through the arc portion 311 of the emission surface, and a small part of the light can be reflected directly through the inclined portion 312, so that the propagation direction of the light can be effectively changed, not only the anti-glare effect can be achieved, but also the light in the area with high light concentration can be dispersed more uniformly through the effect of multiple reflections, and further the effect of uniform illumination can be achieved, and the irradiation range is very large, thereby achieving the level a of the lighting standard of reading desk lamps. Particularly, in the illuminance chart shown in fig. 4, the desk lamp can illuminate a desktop of 800mm, the illumination range is large, and the illuminance is uniform. In addition, because the light source 200 and the corresponding reflecting surface 310 are arranged on both sides of the lamp housing 100 in the width direction, the desk lamp is more suitable for a larger desktop, and when the desk lamp is placed in the middle of the desktop, both sides of the desk lamp can be illuminated by the desk lamp, so that the integrated use of the lamp can be realized, and the use cost can be reduced.

It should be noted that, as shown in fig. 1 to 3, in the specific structure of the desk lamp, the direction perpendicular to the desk surface is a downward direction, the lamp housing 100 has a top surface opposite to the bottom surface 110, the cross section of the top surface is arranged in a centrosymmetric arc shape, the cross section of the bottom surface 110 is formed in a centrosymmetric arc shape, and two ends of the bottom surface are bent downward. Specifically, in the embodiment, the lamp housing 100, the light sources 200 and the reflective member 300 are all long strips, and the specific length thereof can be set according to the length of the table, wherein the number of the light sources 300 is not limited to two, and the light sources 300 can be divided into two groups, and the two groups of the light sources 300 are respectively disposed on two sides of the bottom surface 110 along the width direction of the lamp housing 100. In addition, for realizing stable the placing of desk lamp, this desk lamp still includes the pillar 600 of two relative settings, and the upper end that two pillars 600 kept away from the desktop is connected with lamp body 100 along length direction's both ends respectively, is equipped with the spliced pole (not shown) that is used for with the spacing connection of desktop on the lower extreme terminal surface of pillar 600.

Referring to fig. 3, in order to better achieve the anti-glare and uniform illumination effect, preferably, in the present embodiment, the arc range of the arc portion 311 is 15 ± 2rad, an angle a is formed between the inclined portion 312 and the vertical direction perpendicular to the desktop, and the angle range of the angle a is 8 ± 2 °, wherein the optimal value of the arc range of the arc portion 311 is 15rad, that is, the arc portion 311 is approximately r15, and the optimal value of the angle a is 8 °, so that the light can be sufficiently reflected to the desktop 500mm away. In addition, the angle range of the angle C of the arc portion 311 is 104 ± 5 °, the optimal value is 104 °, the length range of the inclined portion 312 is 30 ± 3mm, and the optimal value is 30mm, so that the optimal reading illumination effect can be realized. Here, in order to improve the surface diffuse reflection performance of the reflector 300, a high white paint may be sprayed on the surface of the reflector 300, and the surface diffuse reflection rate thereof is required to be in a preferred range of 80% ± 2.

Further, as shown in fig. 1 to 3, in the present embodiment, the desk lamp further includes a light guide plate 500, a length extending direction of the light guide plate 500 is identical to that of the reflector 300, and an upper end of the light guide plate 500 facing the bottom surface 110 is detachably connected to a lower end of the reflector 300 facing the desk top. Specifically, as shown in fig. 3, a first inner cavity 320 that is open downward is disposed at the lower end of the reflector 300, a protruding rib 321 that extends along the length direction of the reflector 300 is convexly disposed on the two opposite inner walls of the first inner cavity 320, a corresponding slot 510 is disposed at the upper end of the two opposite side surfaces of the light guide plate 500, one end or two ends of the reflector 300 along the length direction are open, and in actual installation, only the protruding rib 321 and the slot 510 on the corresponding side need to be aligned, and then the light guide plate 500 is pushed forward. Here, the light guide plate 500 is made of a transparent material, and the height range of the reflector 300 exposed downward is preferably 42 ± 5mm, and when most of the light is reflected by the emitting surface, a small portion of the light reaches the light guide plate 500, so that the light guide plate 500 has a small portion of stray light spots to function as ambient light, thereby further improving the light environment.

Referring to fig. 2 and 3, in the present embodiment, each light source 200 includes a substrate 210 having a length extending direction consistent with the lamp housing 100, and a plurality of LED beads 220 disposed on the substrate 210 and arranged at intervals along the length direction, an included angle B is formed between the substrate 210 and the vertical direction, and an angle range of the included angle B is preferably 3 ± 0.5 °. Specifically, in the present embodiment, the substrate 210 is optimally tilted by 3 °. It can be understood that the substrate 210 is placed in a vertical direction, i.e. at an included angle B of 0 °, the optical efficiency is reduced, and if the included angle B is larger, the light may overflow the reflector 300, so that the excessive light reaches the lower part of the reflector, e.g. the light guide plate 500, and the glare is uncomfortable, so that the substrate 210 is optimally tilted by 3 °.

Further, referring to fig. 2 and 3, in the present embodiment, the desk lamp further includes a diffusion plate 400 having a length extending direction consistent with the substrate 210, and the diffusion plate 400 is located between the light source 200 and the reflective surface 310 on the corresponding side, and is installed on the bottom surface 110 to be parallel to the substrate 210 at an interval, and accordingly, an inclination angle of the diffusion plate 400 is consistent with the substrate 210. In this way, the light emitted from the light source 200 is diffused by the diffusion plate 400 and then reaches the corresponding reflective surface 310 for reflection, and the reflected light illuminates the table top again, in other words, the diffusion plate 400 is disposed in front of the light source 200, which has the effect of further preventing glare and improving uniformity of illuminance. In particular, the diffuser 400 is milky white, requiring 90% ± 2 for light transmittance and 90% ± 2 for haze.

Further, referring to fig. 3, in the present embodiment, the bottom surface 110 has a first lower side edge facing the table top, the inclined portion 312 has a second lower side edge facing the table top, and on a vertical cross section of the table lamp, a connecting line between a corresponding point of the first lower side edge and a corresponding point of the second lower side edge forms an included angle D with a plane of the table top, and an angle range of the included angle D is 45 ± 3 °. In other words, at both ends of the lamp housing 100 in the width direction, the lamp housing 100 portion below the diffusion plate 400 can perform a light shielding function, and when the lamp housing is in the angle range of the included angle D, the eyes of the user sitting on the desk lamp on one side cannot see the light source 200 on the other side, i.e., the light shielding angle of the light source 200 on the other side by the eyes can be realized, so that the lamp is provided with the anti-glare function.

Referring to fig. 2 and 3, in the present embodiment, to achieve stable installation of the light source 200 and the diffusion plate 400, the bottom surface 110 has an installation region adjacent to the first lower edge, the installation region is provided with a first installation groove 111, a second installation groove 112 and a spacing groove 113, the groove bottoms of the first installation groove 111, the second installation groove 112 and the spacing groove 113 face the reflection surface 310 on the corresponding side, the spacing groove 113 is disposed at the groove bottom of the first installation groove 111, the second installation groove 112 is disposed at the groove bottom of the spacing groove 113, the substrate 210 is installed in the second installation groove 112, the diffusion plate 400 is installed in the first installation groove 111, and the spacing groove 113 is used to provide a gap between the light source 200 and the diffusion plate 400. Specifically, the two opposite inner wall surfaces of the first mounting groove 111 are respectively and concavely provided with a first limiting groove for limiting and clamping the upper edge and the lower edge of the diffusion plate 400, the two opposite inner wall surfaces of the second mounting groove 112 are respectively and concavely provided with a second limiting groove for limiting and clamping the upper edge and the lower edge of the substrate 210, and the length extending directions of the first mounting groove 111, the second mounting groove 112, the spacing groove 113, the first limiting groove and the second limiting groove are all consistent with the lamp housing 100 and at least one end of the first limiting groove and the second limiting groove is open. Of course, the design is not limited thereto, and in other embodiments, the diffusion plate 400 and the light source 200 may be mounted on the mounting area of the lamp housing 100 by, but not limited to, bonding, clipping, or screwing.

Further, referring to fig. 2 and fig. 3, in the present embodiment, at least one end of the lamp housing 100 along the length direction is open, the middle portion of the bottom surface 110 is provided with a sliding protrusion 120 protruding toward the table top and extending along the length direction of the lamp housing 100, and the top portion of the reflection member 300 facing the bottom surface 110 is provided with a sliding groove 330 for the sliding protrusion 120 to slide into the clamping connection. Specifically, the cross section of the sliding protrusion 120 is an inverted T shape, and correspondingly, the sliding groove 330 is also an inverted T shape, however, in other embodiments, the sliding groove 330 and the sliding protrusion 120 may also be other shapes, such as but not limited to an L shape, an inverted triangle shape, an inverted trapezoid shape, and the like, and the invention is not limited thereto. In actual installation, the sliding protrusion 120 can be inserted into the sliding slot 330 and then pushed to the bottom by force to be installed in place. Of course, the reflector 300 and the lamp housing 100 can be mounted by, but not limited to, bonding, clipping, or screwing, but the sliding mounting in this embodiment has the advantage of convenient assembly.

Further, referring to fig. 3, in the present embodiment, since both ends of the lamp housing 100 along the length direction are open, the desk lamp further includes a side cover 700 adapted to cover both ends of the lamp housing 100 in consideration of beauty and preventing dust from entering the interior of the lamp housing 100.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A desk lamp, comprising:

2. The desk lamp as claimed in claim 1, wherein the arc range of the arc portion is 15 ± 2rad, the inclined portion has an angle a with a vertical direction perpendicular to the desk top, and the angle range of the angle a is 8 ± 2 °.

3. The desk lamp as claimed in claim 2, wherein each light source comprises a substrate having a length extending direction consistent with the lamp housing and a plurality of beads arranged on the substrate and spaced along the length direction, an included angle B is formed between the substrate and the vertical direction, and the included angle B is in an angle range of 3 ± 0.5 °.

4. The desk lamp as claimed in claim 3, wherein the bottom surface has a first lower side edge facing the desk top, the inclined portion has a second lower side edge facing the desk top, and a connecting line between a corresponding point of the first lower side edge and a corresponding point of the second lower side edge has an included angle D with a plane in which the desk top is located in a vertical cross section of the desk lamp, and the included angle D is in an angle range of 45 ± 3 °.

5. The desk lamp of claim 4, further comprising a diffuser plate extending lengthwise in a direction coincident with the base plate, the diffuser plate being positioned between the light source and the reflective surface on the corresponding side and mounted on the bottom surface in spaced parallel relation to the base plate.

6. The desk lamp as claimed in claim 5, wherein the bottom surface has a mounting area adjacent to the first lower edge, the mounting area is provided with a first mounting groove, a second mounting groove and a spacing groove, the bottom groove faces the reflective surface of the corresponding side, the spacing groove is provided at the bottom of the first mounting groove, the second mounting groove is provided at the bottom of the spacing groove, the base plate is mounted in the second mounting groove, and the diffuser plate is mounted in the first mounting groove.

7. The desk lamp according to any one of claims 1 to 6, further comprising a light guide plate, wherein the light guide plate has a length extending in a direction corresponding to the reflector, and an upper end of the light guide plate facing the bottom surface is detachably connected to a lower end of the reflector facing the desk top.

8. The desk lamp as claimed in claim 1, wherein the lamp housing is open at least at one end along the length direction, the middle portion of the bottom surface is provided with a sliding protrusion protruding toward the desk surface and extending along the length direction of the lamp housing, and the top portion of the reflection member facing the bottom surface is provided with a sliding groove for the sliding protrusion to slide into the clamping connection.

9. The desk lamp of claim 1, further comprising side covers, wherein both ends of the lamp housing along the length direction are open, and the side covers are adapted to cover the lamp housing.

10. The desk lamp as claimed in claim 1, further comprising at least two support columns, wherein the upper ends of the support columns far away from the desktop are connected with the end portions of the lamp housings, and the end faces of the lower ends of the support columns are provided with connecting columns for limiting connection with the desktop.