A desk lamp

Abstract

The present invention provides a desk lamp, comprising a lamp housing, a light source and a reflector; the lamp housing is straight or folded, and has a bottom surface facing a desktop; a plurality of light sources are respectively mounted on both sides of the bottom surface along the width direction of the lamp housing, and the light emitting surfaces of the light sources arranged on both sides are arranged opposite to each other; the top of the reflector away from the desktop is connected to the bottom surface, and the reflector has two opposite reflecting surfaces, and each reflecting surface is opposite to the light emitting surface of the light source on the corresponding side; the length extension direction of the light source and the reflector is consistent with the extension direction of the lamp housing; the reflecting surface comprises an arc portion and an inclined portion connected to each other, the arc portion is adjacent to the lamp housing and is concavely arranged relative to the light source on the corresponding side; the inclined portion is away from the lamp housing, and is inclined toward the light source on the corresponding side in the direction toward the lamp housing; in the technical solution of the present invention, the light emitted by the light source is reflected by the arc portion and the inclined portion and then emitted toward the desktop, thereby achieving a glare-free and uniform illumination effect, and a large illumination range.

Description

Technical Field

[0001] The invention belongs to the technical field of lamps, and in particular relates to a table lamp. Background Art

[0002] In today's study and work, desk lamps are used in many occasions. However, due to problems with the light source and structural design, common desk lamps on the market often have shortcomings such as glare, uneven illumination, and insufficient illumination range. This can easily cause blurred images and difficulty reading when working or studying under a desk lamp, which can make people feel uncomfortable, easily cause eye fatigue, reduced reading efficiency, and even eye pain and headaches. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and to provide a desk lamp, which aims to solve the problems of glare, uneven illumination and small illumination range of the existing desk lamps.

[0004] The present invention provides a desk lamp, comprising:

[0005] The lamp housing is in a straight or folded line shape and has a bottom surface facing the tabletop;

[0006] A plurality of light sources are respectively mounted on both sides of the bottom surface along the width direction of the lamp housing, and the light emitting surfaces of the light sources disposed on both sides are arranged opposite to each other; and

[0007] A reflector, wherein the top of the reflector facing away from the tabletop is connected to the bottom surface, and the reflector has two opposite reflective surfaces, each of which is opposite to the light emitting surface of the light source on the corresponding side;

[0008] The length extension direction of the light source and the reflector is consistent with the extension direction of the lamp housing; the reflective surface includes an arc portion and an inclined portion connected to each other, the arc portion is adjacent to the lamp housing and is concavely arranged relative to the light source on the corresponding side; the inclined portion is away from the lamp housing and is inclined toward the light source on the corresponding side in the direction toward the lamp housing; the light emitted by the light source is reflected by the arc portion and the inclined portion and then emitted toward the desktop.

[0009] Optionally, the arc range of the arc-shaped portion is 15±2 rad, an angle A is formed between the inclined portion and a vertical direction perpendicular to the desktop, and the angle range of the angle A is 8±2°.

[0010] Optionally, each of the light sources includes a substrate whose length extension direction is consistent with that of the lamp housing and a plurality of lamp beads provided on the substrate and arranged at intervals along the length direction, an angle B is formed between the substrate and the vertical direction, and an angle range of the angle B is 3±0.5°.

[0011] Optionally, the bottom surface has a first lower edge facing the table top, the inclined portion has a second lower edge facing the table top, and on a vertical section of the desk lamp, a connecting line between corresponding points of the first lower edge and corresponding points of the second lower edge has an angle D with the plane where the table top is located, and the angle range of the angle D is 45±3°.

[0012] Optionally, the desk lamp further comprises a diffusion plate having a length extension direction consistent with that of the substrate, and the diffusion plate is located between the light source and the reflecting surface on the corresponding side, and is installed on the bottom surface and spaced parallel to the substrate.

[0013] Optionally, the bottom surface has an installation area adjacent to the first lower side edge, and the installation area is provided with a first installation groove, a second installation groove and a spacing groove whose bottoms are all facing the corresponding sides of the reflective surface, the spacing groove is arranged at the bottom of the first installation groove, the second installation groove is arranged at the bottom of the spacing groove, the substrate is installed in the second installation groove, and the diffuser plate is installed in the first installation groove.

[0014] Optionally, the desk lamp further comprises a light guide plate, the length extension direction of the light guide plate is consistent with that of the reflector, and the upper end of the light guide plate facing the bottom surface is detachably connected to the lower end of the reflector facing the desktop.

[0015] Optionally, the lamp housing is open at at least one end along the length direction, a sliding protrusion is provided in the middle of the bottom surface, which protrudes toward the table top and extends along the length direction of the lamp housing, and the reflector is provided with a sliding groove towards the top of the bottom surface for the sliding protrusion to slide into and engage.

[0016] Optionally, the desk lamp further includes a side cover, and both ends of the lamp housing along the length direction are open and adapted to be covered with the side cover.

[0017] Optionally, the desk lamp further comprises at least two pillars, wherein the upper ends of the pillars away from the desktop are connected to the ends of the lamp housing, and the lower end surfaces of the pillars are provided with connecting pillars for limiting connection with the desktop.

[0018] Based on this structural design, in the technical solution of the present invention, since light sources and corresponding reflective surfaces are provided on both sides of the bottom surface of the lamp housing along the width direction, the light source on the user's side of the desk lamp can avoid being directly facing the eyes, and most of the light emitted from the light source will be reflected twice by the arc portion of the emitting surface, and a small part will be directly reflected once by the inclined portion, thereby effectively changing the propagation direction of the light, not only to achieve the anti-glare effect, but also through the effect of multiple reflections, the light in the area with high light concentration can be dispersed more evenly, thereby achieving the effect of uniform illumination, and the irradiation range is very large, which can reach Class A of the reading desk lamp lighting standard. In addition, since light sources and corresponding reflective surfaces are provided on both sides of the lamp housing along the width direction, the desk lamp is more suitable for larger desktops. When the desk lamp is placed in the middle of the desktop, both sides can obtain desk lamp lighting, so that the integrated use of the lamp can be realized, which is more conducive to reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 is a front view of a desk lamp provided by an embodiment of the present invention;

[0021] Figure 2 is an exploded view of a desk lamp provided by an embodiment of the present invention;

[0022] Figure 3 is a schematic diagram of a cross-sectional structure of a desk lamp provided by an embodiment of the present invention taken along the width direction of a lamp housing;

[0023] Figure 4 This is an illuminance diagram of the light from the desk lamp provided in an embodiment of the present invention irradiating a desktop.

[0024] Description of Figure Numbers:

[0025]

[0026] DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or 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 indirectly connected to the other element.

[0029] It should also be noted that the directional terms such as left, right, up and down in the embodiments of the present invention are merely relative concepts or are based on the normal use status of the product and should not be considered as restrictive.

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] An embodiment of the present invention provides a desk lamp.

[0035] See also Figure 2 and Figure 3In one embodiment, the table lamp includes a lamp housing 100, two sets of light sources 200 and a reflector 300; the lamp housing 100 is in a straight or folded line shape, and has a bottom surface 110 facing the desktop; the two sets of light sources 200 are respectively installed on both sides of the bottom surface 110 along the width direction of the lamp housing 100, and the light-emitting surfaces of the two sets of light sources 200 are arranged oppositely; the top of the reflector 300 away from the desktop is connected to the bottom surface 110, and the reflector 300 has two opposite reflecting surfaces 310, and each reflecting surface 310 is opposite to the light-emitting surface of the light source 200 on the corresponding side; wherein The length extension direction of the light source 200 and the reflector 300 are consistent with the extension direction of the lamp housing 100; the reflective surface 310 includes an arc portion 311 and an inclined portion 312 connected to each other, the arc portion 311 is adjacent to the lamp housing 100 and is concavely arranged 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 by the light source 200 is indirectly reflected twice by the arc portion 311 and directly reflected once by the inclined portion 312, and then emitted to the desktop.

[0036] Based on this structural design, in the present embodiment, since light sources 200 and corresponding reflecting surfaces 310 are provided on both sides of the bottom surface 110 of the lamp housing 100 in the width direction, the light source 200 on the user's side of the desk lamp can avoid being directly facing the eyes, and most of the light emitted from the light source 200 will be reflected twice by the arc portion 311 of the emitting surface, and a small part will be directly reflected once by the inclined portion 312, thereby effectively changing the propagation direction of the light, not only achieving an anti-glare effect, but also through the effect of multiple reflections, the light in the area with higher light concentration can be more evenly dispersed, thereby achieving a uniform illumination effect, and the illumination range is very large, which can reach Class A of the reading desk lamp lighting standard. Specifically, Figure 4 In the illuminance diagram shown, the desk lamp can illuminate a 800mm desktop, with a large irradiation range and uniform illumination. In addition, since the light source 200 and the corresponding reflective surface 310 are provided on both sides of the lamp housing 100 along 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, both sides can obtain desk lamp illumination, so that the integrated use of the lamp can be realized, which is more conducive to reducing the use cost.

[0037] It should be noted here that if Figures 1 to 3As shown, in the specific structure of the desk lamp, with the direction perpendicular to the desktop as the downward direction, the lamp housing 100 has a top surface opposite to the bottom surface 110, the cross section of the top surface is a centrally symmetrical arc, and the cross section of the bottom surface 110 is a centrally symmetrical arc with both ends bent downward. Specifically in this embodiment, the lamp housing 100, the light source 200 and the reflector 300 are all long strips, and their specific lengths can be set according to the length of the desktop, wherein the number of light sources 300 is not limited to two groups, and multiple groups of light sources 300 can be divided into two parts, and the two parts of the light sources 300 are arranged on both sides of the bottom surface 110 along the width direction of the lamp housing 100. In addition, in order to achieve stable placement of the desk lamp, the desk lamp also includes two oppositely arranged pillars 600, the upper ends of the two pillars 600 away from the desktop are respectively connected to the two ends of the lamp housing 100 along the length direction, and the lower end surface of the pillar 600 is provided with a connecting column (not shown) for connecting with the desktop limit.

[0038] See also Figure 3 In order to better achieve the effect of anti-glare and uniform illumination, preferably, in this embodiment, the curvature range of the arc portion 311 is 15±2rad, and there is an angle A 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 curvature range of the arc portion 311 is 15rad, that is, the arc portion 311 is approximately radian 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 C of the arc portion 311 has an angle range of 104±5°, and the optimal value is 104°, and the length range of the inclined portion 312 is 30±3mm, and the optimal value is 30mm, so that the best reading lighting effect can be achieved. Here, in order to improve the surface diffuse reflection performance of the reflector 300, a high-gloss white paint can be sprayed on the surface of the reflector 300, and its surface diffuse reflectivity is required to be in the preferred range of 80%±2.

[0039] Furthermore, if Figures 1 to 3 As shown, in this embodiment, the desk lamp further includes a light guide plate 500, the length extension direction of the light guide plate 500 is consistent with the reflector 300, and the upper end of the light guide plate 500 facing the bottom surface 110 is detachably connected to the lower end of the reflector 300 facing the desktop. Figure 3As shown, a first inner cavity 320 open downward is provided at the lower end of the reflector 300, and convex ribs 321 extending along the length direction of the reflector 300 are convexly provided on the two opposite inner side walls of the first inner cavity 320, and corresponding card slots 510 are provided near the upper end of the two opposite side surfaces of the light guide plate 500. One or both ends of the reflector 300 along the length direction are open. During actual installation, it is only necessary to align the convex ribs 321 and the card slots 510 on the corresponding sides, and then push the light guide plate 500. Here, the light guide plate 500 is made of transparent material, and the height range of the reflector 300 exposed downward is preferably 42±5mm. When most of the light is reflected by the emitting surface, a small part of the light reaches the light guide plate 500, so that the light guide plate 500 has a small part of stray light spots, which plays the role of ambient light, so as to further improve the lighting environment.

[0040] See also Figure 2 and Figure 3 In the present embodiment, each light source 200 includes a substrate 210 whose length extension direction is consistent with the lamp housing 100 and a plurality of LED lamp beads 220 arranged on the substrate 210 and spaced apart along the length direction. An angle B is formed between the substrate 210 and the vertical direction, and the angle range of the angle B is preferably 3±0.5°. Specifically in the present embodiment, the substrate 210 is placed at an optimal tilt of 3°. It can be understood that if the substrate 210 is placed in a vertical direction, that is, when the angle B is 0°, the optical efficiency is reduced, and if the angle B is larger, the light will overflow the reflective member 300, so that too much light reaches the bottom of the radiating member, such as the light guide plate 500, forming a dazzling and uncomfortable glare, so the substrate 210 tilted 3° is the best setting.

[0041] For further information, see Figure 2 and Figure 3 In this embodiment, the desk lamp further includes a diffuser plate 400 whose length extension direction is consistent with that of the substrate 210, and the diffuser 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 and is spaced and parallel to the substrate 210. Accordingly, the inclination angle of the diffuser plate 400 is consistent with that of the substrate 210. In this way, the light emitted by the light source 200 is diffused by the diffuser plate 400, and then reaches the reflective surface 310 on the corresponding side for reflection, and the reflected light then illuminates the desktop. In other words, the diffuser plate 400 is arranged in front of the light source 200 to further prevent glare and improve the uniformity of illumination. In particular, the diffuser plate 400 is milky white, and its light transmittance is required to be 90%±2, and the haze is required to be 90%±2.

[0042] For further information, see Figure 3In this embodiment, the bottom surface 110 has a first lower edge facing the desktop, and the inclined portion 312 has a second lower edge facing the desktop. On the vertical cross section of the desk lamp, the connecting line between the corresponding point of the first lower edge and the corresponding point of the second lower edge has an angle D with the plane where the desktop is located, and the angle range of the angle D is 45±3°. In other words, at both ends of the lamp housing 100 along the width direction, the portion of the lamp housing 100 below the diffuser 400 can play a shading function. When in the angle range of the angle D, the eyes of the desk lamp user sitting on one side cannot see the light source 200 on the other side, that is, the shading angle of the human eye to the light source 200 on the other side can be achieved, so that the desk lamp has a sufficient anti-glare function.

[0043] See also Figure 2 and Figure 3 In the present embodiment, in order to realize the stable installation of the light source 200 and the diffuser plate 400, the bottom surface 110 has an installation area adjacent to the first lower side edge, and the installation area is provided with a first installation groove 111, a second installation groove 112 and a spacing groove 113, the bottoms of which are all facing the reflective surface 310 on the corresponding side, the spacing groove 113 is arranged at the bottom of the first installation groove 111, the second installation groove 112 is arranged at the bottom of the spacing groove 113, the substrate 210 is installed in the second installation groove 112, the diffuser plate 400 is installed in the first installation groove 111, and the spacing groove 113 is used to allow a gap between the light source 200 and the diffuser plate 400 to facilitate heat dissipation of the light source 200 and prevent the diffuser plate 400 from being damaged by heat. Specifically, a first limiting groove for limiting the upper and lower edges of the diffuser plate 400 is concavely provided on the two inner wall surfaces of the first mounting groove 111, and a second limiting groove for limiting the upper and lower edges of the substrate 210 is concavely provided on the two inner wall surfaces of the second mounting groove 112. Moreover, the length extension direction 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 consistent with the lamp housing 100 and at least one end is open. When installing, it is only necessary to align the corresponding components and push them into the corresponding grooves, and the assembly process is very convenient. Of course, the present design is not limited to this. In other embodiments, the diffuser plate 400 and the light source 200 can also be installed in the installation area of ​​the lamp housing 100 by, but not limited to, bonding, clamping or screwing.

[0044] For further information, see Figure 2 and Figure 3In this embodiment, the lamp housing 100 is open at least at one end along the length direction, and a sliding protrusion 120 is provided in the middle of the bottom surface 110, which protrudes toward the desktop and extends along the length direction of the lamp housing 100. The reflector 300 is provided with a sliding groove 330 for the sliding protrusion 120 to slide into and engage with the top of the bottom surface 110. Specifically, the cross section of the sliding protrusion 120 is in an inverted T shape, and the sliding groove 330 is also in an inverted T shape accordingly. Of course, in other embodiments, the sliding groove 330 and the sliding protrusion 120 can also be in other shapes, such as but not limited to L-shaped, inverted triangle, inverted trapezoid, etc., which are not limited here. In actual installation, the sliding protrusion 120 can be inserted into the sliding groove 330, and then pushed to the bottom by force to install it in place. Of course, the reflector 300 and the lamp housing 100 can also be installed by but not limited to bonding, clamping or screwing, but the sliding installation method in this embodiment has the advantage of convenient assembly.

[0045] For further information, see Figure 3 In the present embodiment, since both ends of the lamp housing 100 along the length direction are open, for the sake of aesthetics and preventing dust from entering the interior of the lamp housing 100, the desk lamp further includes side covers 700 that fit the two ends of the lamp housing 100.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A desk lamp, characterized in that: include: The lamp housing is in a straight or folded line shape and has a bottom surface facing the tabletop; A plurality of light sources are respectively mounted on both sides of the bottom surface along the width direction of the lamp housing, and the light emitting surfaces of the light sources arranged on both sides are arranged opposite to each other; as well as, A reflector, wherein the top of the reflector facing away from the tabletop is connected to the bottom surface, the reflector has two opposite reflective surfaces, each of which is opposite to the light emitting surface of the light source on the corresponding side, and the range of the surface diffuse reflectivity of the reflector is 80%±2; The length extension direction of the light source and the reflector is consistent with the extension direction of the lamp housing; the reflective surface includes an arc portion and an inclined portion connected to each other, the arc portion is adjacent to the lamp housing and is concavely arranged relative to the light source on the corresponding side; the inclined portion is away from the lamp housing and is inclined toward the light source on the corresponding side in the direction toward the lamp housing; the light emitted by the light source is reflected by the arc portion and the inclined portion and then emitted toward the desktop.

2. The desk lamp according to claim 1, characterized in that: The arc range of the arc-shaped portion is 15±2 rad, and an angle A is formed between the inclined portion and a vertical direction perpendicular to the desktop, and the angle range of the angle A is 8±2°.

3. The desk lamp according to claim 2, characterized in that: Each of the light sources comprises a substrate whose length extension direction is consistent with that of the lamp housing and a plurality of lamp beads arranged on the substrate and spaced apart along the length direction. An angle B is formed between the substrate and the vertical direction, and the angle range of the angle B is 3±0.5°.

4. The table lamp according to claim 3, characterized in that: The bottom surface has a first lower edge facing the table top, and the inclined portion has a second lower edge facing the table top. On a vertical section of the desk lamp, a connecting line between corresponding points of the first lower edge and corresponding points of the second lower edge forms an angle D with the plane where the table top is located, and the angle range of the angle D is 45±3°.

5. The table lamp according to claim 4, characterized in that: The desk lamp further comprises a diffusion plate whose length extension direction is consistent with that of the substrate, and the diffusion plate is located between the light source and the reflecting surface on the corresponding side, and is installed on the bottom surface and spaced parallel to the substrate.

6. The table lamp according to claim 5, characterized in that: The bottom surface has an installation area adjacent to the first lower side edge, and the installation area is provided with a first installation groove, a second installation groove and a spacing groove with the bottoms of the grooves facing the corresponding sides of the reflective surface, the spacing groove is arranged at the bottom of the first installation groove, the second installation groove is arranged at the bottom of the spacing groove, the substrate is installed in the second installation groove, and the diffuser plate is installed in the first installation groove.

7. The table lamp according to any one of claims 1 to 6, characterized in that: The desk lamp further comprises a light guide plate, the length extension direction of the light guide plate is consistent with that of the reflector, and the upper end of the light guide plate facing the bottom surface is detachably connected to the lower end of the reflector facing the desktop.

8. The desk lamp according to claim 1, characterized in that: The lamp housing is open at at least one end along the length direction, the middle part of the bottom surface is provided with a sliding protrusion protruding toward the desktop and extending along the length direction of the lamp housing, and the reflector is provided with a sliding groove towards the top of the bottom surface for the sliding protrusion to slide into and engage.

9. The desk lamp according to claim 1, characterized in that: The desk lamp also includes a side cover. Both ends of the lamp housing along the length direction are open and are adapted to be covered with the side cover.

10. The desk lamp according to claim 1, characterized in that: The desk lamp further comprises at least two pillars, wherein the upper ends of the pillars away from the desktop are connected to the ends of the lamp housing, and the lower end surfaces of the pillars are provided with connecting pillars for limiting connection with the desktop.

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