Side light-emitting LED table lamp

Abstract

The utility model discloses a side light emitting LED table lamp which comprises a light guide plate and a light bar, a plurality of lamp beads are arranged on the light bar, the light bar is arranged on the side face of the light guide plate, the lamp beads located at the arc position of the light guide plate comprise first color temperature lamp beads and second color temperature lamp beads which are sequentially distributed in a staggered mode, and the first color temperature lamp beads and the second color temperature lamp beads are arranged in a staggered mode. The first color temperature lamp beads / the second color temperature lamp beads emit light according to a first brightness proportion, meanwhile, the second color temperature lamp beads / the first color temperature lamp beads correspondingly emit light according to a second brightness proportion, the first brightness proportion is larger than the second brightness proportion, and the sum of the first brightness proportion and the second brightness proportion is 100%.

Description

Technical Field

[0001] The utility model relates to the technical field of LED desk lamps, in particular to a side-emitting LED desk lamp. Background Art

[0002] Existing side-emitting desk lamps generally use two types of lamp beads, 3000K and 5000K. The two types of lamp beads are alternately arranged on the sides of the light guide plate to achieve three color temperatures of light, such as only lighting 3000K, only lighting 5000K, and lighting both lamp beads at the same time. The two ends of the light guide plate are generally arc-shaped, forming two arc positions. The existing technology has the following problems: 1. When a single color temperature is emitted, the lamp beads with the same color temperature located in the arc position of the light guide plate are spaced relatively large, which will cause shadows to appear on the light guide plate, affecting the illumination. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a side-emitting LED desk lamp capable of eliminating shadows.

[0004] According to an embodiment of the present invention, a side-emitting LED desk lamp includes a light guide plate and a light strip, wherein the light strip is provided with a plurality of lamp beads, and the light strip is arranged on the side of the light guide plate. The lamp beads located at the arc position of the light guide plate include first color temperature lamp beads and second color temperature lamp beads that are alternately distributed in sequence. The first color temperature lamp beads / the second color temperature lamp beads emit light at a first brightness ratio, and at the same time, the second color temperature lamp beads / the first color temperature lamp beads correspondingly emit light at a second brightness ratio. The first brightness ratio is greater than the second brightness ratio, and the sum of the first brightness ratio and the second brightness ratio is 100%.

[0005] The side-emitting LED desk lamp according to the embodiment of the present invention has at least the following beneficial effects: the lamp beads at the arc position of the light guide plate have two color temperatures, and the lamp beads of the two color temperatures are lit at the same time, with the lamp beads of one color temperature emitting light at a large proportion of the first brightness, and the lamp beads of the other color temperature emitting light at a small proportion of the second brightness, thereby avoiding the emission of single-color temperature lamp beads, thus preventing shadows from being generated, and ensuring that light is emitted at a certain color temperature.

[0006] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The following is a further description of the specific embodiments of the present invention in conjunction with the accompanying drawings;

[0008] Figure 1 This is the structural diagram of the side-emitting LED desk lamp;

[0009] Figure 2This is the exploded structure diagram of the side-emitting LED desk lamp;

[0010] Figure 3 This is a partial structural diagram of the light guide plate and light bar;

[0011] Figure 4 This is a reflection principle diagram of the evanescent dot. DETAILED DESCRIPTION

[0012] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0013] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They 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. Therefore, they cannot be understood as limitations on the present invention.

[0014] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0015] Reference Figures 1 to 4The utility model discloses a side-emitting LED desk lamp, comprising a light guide plate 10 and a light bar 20. The side of the light guide plate 10 is provided with a plurality of arc-shaped grooves 11. The light bar 20 is provided with a plurality of lamp beads 21. The light bar 20 is arranged on the side of the light guide plate 10 so that the plurality of lamp beads 21 are arranged in a one-to-one correspondence in the plurality of arc-shaped grooves 11. The upper surface of the light guide plate 10 is provided with a plurality of grooves 12 of different sizes. The size of the plurality of grooves 12 gradually decreases in the direction away from the lamp beads 21 to form a fading dot pattern. And the lamp beads 21 located at the arc position of the light guide plate 10 include first color temperature lamp beads and second color temperature lamp beads that are staggered in sequence. The first color temperature lamp beads / second color temperature lamp beads emit light at a brightness of 85% to 95%, and the second color temperature lamp beads / first color temperature lamp beads emit light at a brightness of 5% to 15% accordingly. The sum of the brightness ratio of the first color temperature lamp beads and the brightness ratio of the second color temperature lamp beads is 100%. For example, the first color temperature lamp beads emit light at a brightness of 85%, and the second color temperature lamp beads emit light at a brightness of 15%. First, an arc-shaped groove 11 is opened on the side of the light guide plate 10 to change the plane of the light-entering surface into an arc surface, thereby increasing the light-entering surface and increasing the illumination. Secondly, the groove 12 on the upper surface of the light guide plate 10 gradually decreases in the direction away from the lamp beads 21, forming a gradually disappearing network point, such as Figure 4 As shown, since the reflection angle a of the light emitted by the lamp bead 21 at the large groove 12 is smaller than the reflection angle b at the small groove 12, the illumination range of the light is increased while the illumination is further increased. Again, the lamp bead 21 at the arc position of the light guide plate 10 has two color temperatures. The lamp beads 21 of the two color temperatures are lit at the same time, with the lamp bead 21 of one color temperature emitting light at a large proportion of 85% to 95% brightness, and the lamp bead 21 of the other color temperature emitting light at a small proportion of 5% to 15%, avoiding the single-color temperature lamp bead 21 from emitting light. In this way, no shadows will be generated, and it can also ensure that the light is emitted at a certain color temperature, further increasing the illumination. That is, the arc groove 11 increases the light-entry surface, allowing more light to enter the light guide plate 10, further enhancing the illumination and illumination range under the reflection of the gradually disappearing dots. At the same time, the dual-color temperature lamp bead 21 emits light at a proportional brightness, eliminating shadows, which significantly enhances the illumination.

[0016] like Figure 2 As shown, in some embodiments, the light bar 20 is arranged on a portion of the side of the light guide plate 10, and the light bar 20 is arranged on two arc-shaped positions and a straight side of the light guide plate 10, and the other straight side is not provided with the arc groove 11 and the light bar 20, so that the cost is saved while ensuring the illumination.

[0017] Furthermore, the groove 12 is formed by laser dotting, which is convenient for processing and manufacturing.

[0018] like Figure 2As shown, a reflective plate 30 is provided above the light guide plate 10 to reflect light, and a prism plate 40 is provided below the light guide plate 10. The light incident surface of the prism plate 40 is provided with uneven textures to increase the scattering effect, thereby further increasing the illumination and illumination range.

[0019] Furthermore, the lamp housing 50 and the frame 60 are provided with a slot 51 therein. The frame 60 includes an edge seal 61 and a bent portion 62 perpendicularly connected to the edge seal 61. The bent portion 62 engages with the slot 51 so that the reflector 30, the light guide plate 10, and the prism plate 40 are sequentially disposed between the edge seal 61 and the lamp housing 50. The slot 51 is an annular groove with a first engaging portion 511 disposed on its inner wall. A second engaging portion 621 is correspondingly disposed on the bent portion 62. The first engaging portion 511 and the second engaging portion 621 abut against each other, resulting in a simple structure and easy disassembly and assembly.

[0020] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above preferred embodiments can be freely combined and superimposed.

[0021] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A side-emitting LED desk lamp, characterized in that: include: A light guide plate (10) and a light bar (20), wherein the light bar (20) is provided with a plurality of lamp beads (21), the light bar (20) is arranged on the side of the light guide plate (10), and the lamp beads (21) located at the arc position of the light guide plate (10) include first color temperature lamp beads and second color temperature lamp beads that are alternately distributed in sequence, the first color temperature lamp beads / the second color temperature lamp beads emit light at a first brightness ratio, and the second color temperature lamp beads / the first color temperature lamp beads correspondingly emit light at a second brightness ratio, the first brightness ratio is greater than the second brightness ratio, and the sum of the first brightness ratio and the second brightness ratio is 100%.

2. The side-emitting LED desk lamp according to claim 1, characterized in that: A plurality of arc-shaped grooves (11) are provided on the side surface of the light guide plate (10), and a plurality of lamp beads (21) are arranged in the plurality of arc-shaped grooves (11) in a one-to-one correspondence.

3. The side-emitting LED desk lamp according to claim 1, characterized in that: The upper surface of the light guide plate (10) is provided with a plurality of grooves (12) of different sizes, and the sizes of the plurality of grooves (12) gradually decrease in a direction away from the lamp beads (21) to form fading dots.

4. The side-emitting LED desk lamp according to claim 1, characterized in that: The light bar (20) is arranged on a portion of the side surface of the light guide plate (10).

5. The side-emitting LED desk lamp according to claim 1, characterized in that: A reflective plate (30) is provided above the light guide plate (10).

6. The side-emitting LED desk lamp according to claim 5, characterized in that: A prism plate (40) is provided below the light guide plate (10).

7. The side-emitting LED desk lamp according to claim 6, characterized in that: The light-incoming surface of the prism plate (40) is provided with uneven patterns to increase the scattering effect.

8. The side-emitting LED desk lamp according to claim 7, characterized in that: The invention also includes a lamp housing (50) and a frame (60), wherein a slot (51) is provided in the lamp housing (50), and the frame (60) includes an edge seal (61) and a bending portion (62) vertically connected to the edge seal (61), and the bending portion (62) is engaged with the slot (51) so that the reflector (30), the light guide plate (10) and the prism plate (40) are sequentially arranged between the edge seal (61) and the lamp housing (50).

9. The side-emitting LED desk lamp according to claim 8, characterized in that: The clamping groove (51) is an annular groove, a first clamping portion (511) is provided on the inner wall of the annular groove, and a second clamping portion (621) is correspondingly provided on the bending portion (62), and the first clamping portion (511) and the second clamping portion (621) abut against each other.

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