LED lamp

Abstract

The utility model relates to an LED lamp which comprises a lamp holder and a lampshade covering the bottom of the lampshade, the lampshade is in a long strip shape on the whole, and convex stripes which extend in the length direction of the lampshade and are sequentially arranged in the width direction are distributed on the inner wall of a main body of the lampshade. A main body of the lampshade comprises a middle light-transmitting part located in a middle area in the width direction of the lampshade and side light-transmitting parts located on the two sides of the middle light-transmitting part, outer convex stripes are arranged on the inner walls of the middle light-transmitting part and the two side light-transmitting parts, and the middle light-transmitting part is of a downwards-concave arc-shaped structure. The parts, connected with the middle light-transmitting part, of the two side light-transmitting parts are marked as transition light-transmitting parts, the two transition light-transmitting parts are of arc-shaped structures which are in smooth transition connection from the middle light-transmitting part to the corresponding side light-transmitting parts, and the curvature radius of the middle light-transmitting part is larger than that of the two transition light-transmitting parts. The lamp has the advantages that emergent light rays can be effectively widened, so that the visual effect of a luminous light source is more three-dimensional and broader.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lamp technical field especially relates to a LED lamp. BACKGROUND

[0002] LED lamp, that is, light emitting diode lamp, is a kind of semiconductor solid-state light emitting device using solid-state semiconductor chip as light emitting material, and can be used in furniture lighting and commercial lighting. For example, LED three-proof lamp is a kind of LED special lighting lamp made of special protective material and having dustproof, waterproof and explosion-proof (corrosion-resistant) functions, and is widely used in various areas and places needing moisture-proof, dust-proof and corrosion-resistant, such as the three-proof lamp structure disclosed in Chinese utility model patent No. ZL201420451780.7 (authorized publication No. CN204042523U) and Chinese utility model patent No. ZL201620046987.5 (authorized publication No. CN205331838U). However, the existing three-proof lamp has the problem of weak light irradiation on both sides when illuminating, which leads to the problem that the objects on the side cannot be clearly irradiated.

[0003] In order to solve the above technical problems, the Chinese utility model patent application No. CN201920268637.7 (authorized publication No. CN209262821U) discloses a three-proof lamp with uniform irradiation, which comprises a lamp body provided with a lighting light source. The lamp body comprises a lamp holder and a lampshade that are mutually covered. The inner wall surface of the lampshade is provided with a light guide structure capable of dispersing the light emitted by the lighting light source outward of the lampshade. The light guide structure is a protruding portion provided on the inner wall surface of the lampshade. The protruding portion is a convex strip, and the cross section of the convex strip is in the shape of an isosceles triangle. In this way, the light rays can better form refraction and reflection on the two side surfaces of the convex strip. The protruding portion extends along the length direction of the longitudinal section of the lampshade and is uniformly distributed on the inner wall surface of the lampshade. The patent application can control the 120-degree light rays in a single direction through refraction and reflection by setting the light guide structure, reduce the peak illuminance, increase the edge illuminance, make the light spot transition soft, and thus make the light irradiation of the three-proof lamp uniform.

[0004] The three-proofing lamp in the above patent application still has certain deficiencies: although the inner wall of the lampshade of the three-proofing lamp has the convex strip structure with the equilateral triangular cross section, which improves the problem of uneven light irradiation of the three-proofing lamp to a certain extent, the lampshade adopts the conventional circular arc type lampshade structure, and since the illuminance distribution of the lamp is closely related to the shape of the lampshade, the conventional circular arc type lampshade mainly concentrates light in a relatively narrow area due to the limitation of optical design, that is, the distribution of the light distribution curve of the circular arc structure lampshade in the width direction is relatively concentrated, which means that light is mainly concentrated in a small angle range, so that from the outside, the area irradiated by the lamp is not wide and stereoscopic enough.

[0005] Therefore, the existing LED lamp still needs to be further improved. Content of the utility model

[0006] The utility model solves the technical problem to be solved to provide a kind of LED lamp that can make light ray effectively be widened, and then make the visual effect of light emitting source more stereoscopic, wide.

[0007] The utility model solves the technical problem by the technical scheme that a kind of LED lamp, including lamp holder and the lampshade of cover in the bottom of lamp holder, the lampshade is long strip as a whole, the inner wall of the main body of the lampshade is distributed with the outer convex stripe that extends along the length direction of the lampshade and is sequentially arranged in width direction, the main body of the lampshade includes the middle light-transmitting portion in the middle region in its width direction and the side light-transmitting portion in the two sides of middle light-transmitting portion, two side light-transmitting portion all extend from the two sides of middle light-transmitting portion upward, to make the cross section of the main body of the lampshade present U type, the inner wall of middle light-transmitting portion and two side light-transmitting portion is equipped with above-mentioned outer convex stripe, middle light-transmitting portion is concave arc structure, the part of two side light-transmitting portion and middle light-transmitting portion is transition light-transmitting portion, two transition light-transmitting portion are all the arc structure that present smooth transition from middle light-transmitting portion to corresponding side light-transmitting portion, the curvature radius of middle light-transmitting portion is greater than the curvature radius of two transition light-transmitting portion.

[0008] In "two side light-transmitting portion all extend from the two sides of middle light-transmitting portion upward", "extend upward" can be understood as that side light-transmitting portion is vertically extended, or side light-transmitting portion is slightly inclined to vertical direction.

[0009] The utility model discloses a lampshade's main part includes the middle light -transmitting part of the middle area in width direction and the side light -transmitting part of the both sides of middle light -transmitting part, wherein, the inner wall of middle light -transmitting part and two side light -transmitting parts all are equipped with above-mentioned outer convex stripe, and outer convex stripe can break the regular propagation path of light, and light dispersion is more soft, and the problem of glare is reduced, on this basis, the middle light -transmitting part of lampshade is designed as the arc structure of concave down, and the part (transition light -transmitting part) of two side light -transmitting parts and middle light -transmitting part meets also all designs as the arc structure of smooth transition meeting from middle light -transmitting part to corresponding side light -transmitting part, and, the curvature radius of middle light -transmitting part is greater than the curvature radius of two transition light -transmitting parts, and this lampshade adopts the arc segment of multiple different curvature radiuses meeting in width direction, can make lampshade whole become relatively flat, and the light ray of light emission is effectively widened, and further makes the visual effect of light emitting source more stereoscopic, broad.

[0010] In order to guarantee the overall light emission uniformity of the lampshade, the width dimension of the middle light-transmitting part of the bottom of the lampshade cannot be too large or too small, preferably, the curvature radius of the middle light-transmitting part is denoted as R1, and the curvature radius of the transition light-transmitting part is denoted as R2, both of which satisfy the following conditions: 5R2≤R1≤15R2.

[0011] In order to further guarantee the light emitting area of the lampshade, the width dimension of the main body of the lampshade is denoted as W, the height dimension is denoted as h, and the width dimension of the middle light-transmitting part of the lampshade is denoted as M, and the above parameters satisfy the conditions: 3h≤W≤6h, 0.6W<M<W.

[0012] In order to further improve the light emission width of the lampshade and guarantee the overall light emission uniformity of the lampshade, the middle position of the bottom of the lamp holder in the width direction is provided with a light source, the area of the middle light-transmitting part corresponding to the position directly below the light source is denoted as a direct light-transmitting area, the outer convex stripes on the side light-transmitting part are denoted as first stripes, the outer convex stripes on the direct light-transmitting area of the middle light-transmitting part are denoted as third stripes, the outer convex stripes on the other areas of the middle light-transmitting part except the above direct light-transmitting area are denoted as second stripes, the included angle formed by the connecting line of the two adjacent first stripes on the side light-transmitting part to the center of the light source is denoted as a first included angle, the included angle formed by the connecting line of the two adjacent second stripes on the middle light-transmitting part to the center of the light source is denoted as a second included angle, and the included angle formed by the connecting line of the two adjacent third stripes on the middle light-transmitting part to the center of the light source is denoted as a third included angle, and the first included angle, the second included angle and the third included angle are respectively denoted as a, b and c, wherein, the three satisfy the following conditions: 0.2b≤a≤3c.

[0013] The design of the above angle parameters makes the light emitted by the LED double-color light source be widened after passing through the lampshade under the refraction and reflection of the stripes, so that when the light emitting lamp is viewed from the outside, the overall width of the light emitting lamp strip extends to both sides, making the visual effect of the light source more extensive and stereoscopic.

[0014] The "center of the light source" refers to the center position of the light emitting surface or light emitting area of the light source. For example, when the light source is in the form of a lamp strip structure with a row of lamp beads, the center of the light source refers to the line connecting the positions of the lamp beads. When the light source is in the form of a lamp strip structure with two rows of parallel lamp beads, the center of the light source refers to the line connecting the middle positions of the two rows of lamp beads.

[0015] Considering that the distance between the light source and the corresponding area of the lampshade will increase when the width of the lampshade increases, if the corresponding angle (relative to the center of the light source) between the adjacent stripes in the area of the direct light transmission zone of the middle light transmission part remains unchanged, the light refraction and scattering efficiency will be low. Therefore, the corresponding angle between the adjacent stripes in the area of the direct light transmission zone of the middle light transmission part should also be increased accordingly. Specifically, the middle position of the bottom of the lamp holder in the width direction is provided with a light source, the area directly below the light source on the middle light transmission part is referred to as the direct light transmission zone, the outer convex stripes on the direct light transmission zone of the middle light transmission part are referred to as the third stripes, and the included angle formed by the line connecting the two adjacent third stripes on the direct light transmission zone to the center of the light source is referred to as the third included angle. The third included angle, the width dimension of the main body of the lampshade, and the height dimension of the main body of the lampshade satisfy the condition: 0.15W≤c≤0.5W.

[0016] The parameters "W" and "c" are numerical values without units.

[0017] In order to better connect and transition between the middle light transmission part and the side light transmission part through the transition light transmission part, and to ensure the overall aesthetics and light output effect of the lampshade, the curvature radius of the transition light transmission part is in the range of 3mm to 8mm.

[0018] As an improvement, the two side light transmission parts are symmetrically arranged about the middle light transmission part and are both in the form of a flat plate. The distance between the two side light transmission parts in the width direction of the lampshade gradually increases from bottom to top. It is conceivable that the two side light transmission parts can also adopt an arc structure, but the curvature radius of the arc structure should be relatively large and at least larger than the curvature radius of the middle light transmission part.

[0019] In order to facilitate processing and ensure the visual effect of light output, the inner side surface of the two transition light transmission parts of the lampshade is a smooth curved surface without convex stripes.

[0020] As an improvement, the cross section of the outward convex stripe is circular arc, triangle or trapezoid. In particular, the outward convex stripe with a cross section of triangle or trapezoid is preferably in a structure with a symmetric center, such as a structure with a cross section of isosceles triangle or equilateral triangle or a structure with a cross section of isosceles trapezoid.

[0021] The "main body of the lampshade" in the utility model generally refers to the part except the two end parts in the length direction of the lampshade, that is, the two end parts of the lampshade can be in a structure consistent with the main body of the lampshade, but for the convenience of processing and the consideration of aesthetics, the two end parts of the lampshade can also be in a structure inconsistent with the main body of the lampshade, specifically, the two side light-transmitting parts of the lampshade are connected at the two end parts in the length direction of the lampshade to form a whole closed runway-type side light-transmitting part, the intermediate light-transmitting part is located in the range surrounded by the runway-type side light-transmitting part, and the outward convex stripes on the two side light-transmitting parts are also connected at the two end parts in the length direction of the lampshade to form a closed runway-type stripe structure.

[0022] Compared with the prior art, the utility model has the advantages that: the main body of the lampshade of the utility model comprises an intermediate light-transmitting part located in the middle region in the width direction and side light-transmitting parts located on the two sides of the intermediate light-transmitting part, wherein the inner walls of the intermediate light-transmitting part and the two side light-transmitting parts are all provided with the outward convex stripes, the outward convex stripes can break the regular propagation path of light and make the dispersion of light more soft, thereby reducing the problem of glare, on this basis, the intermediate light-transmitting part of the lampshade is designed as a concave arc structure, the parts (transition light-transmitting parts) where the two side light-transmitting parts meet the intermediate light-transmitting part are also all designed as arc structures that are smoothly connected from the intermediate light-transmitting part to the corresponding side light-transmitting part, and the curvature radius of the intermediate light-transmitting part is greater than the curvature radius of the two transition light-transmitting parts, this kind of lampshade adopts arc segments with different curvature radii to be connected in the width direction, which can make the whole lampshade relatively flat, the light emitted is effectively widened, and thus the visual effect of the light source is more stereoscopic and broad. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the LED lamp of the utility model embodiment;

[0024] Figure 2 It is an exploded view of the LED lamp of the utility model embodiment;

[0025] Figure 3 It is a three-dimensional transverse sectional view of the LED lamp of the utility model embodiment;

[0026] Figure 4 It is an enlarged view of the local region of the lampshade of the utility model embodiment. DETAILED DESCRIPTION

[0027] The utility model will be described in further detail below with reference to the drawings.

[0028] In the specification and claims of the utility model, terms indicating directions, such as "front", "back", "up", "down", "left", "right", "side", "top", "bottom" and the like, are used to describe various example structural parts and elements of the utility model, but these terms are used herein only for the purpose of convenience of description and are determined based on the example orientation shown in the drawings. Since the disclosed embodiments of the utility model can be arranged in different directions, these terms indicating directions are only for illustration and should not be considered as limitations, such as "up" and "down" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

[0029] Figures 1-4 A preferred embodiment of the LED lamp of the utility model is shown. The LED lamp as a whole is in a strip shape, which comprises a lamp holder 10, a lampshade 20 and a lamp panel assembly (not shown). The lamp panel assembly is arranged at the bottom of the lamp holder 10 and generally comprises a lamp panel and a control assembly, the lamp panel is provided with LED lamp beads, the LED lamp beads are generally arranged in two groups or more in parallel, and the LED lamp beads on the lamp panel are the light source 12 of the lamp. In this embodiment, the lamp panel has two rows of LED lamp beads. The extension direction of the lamp panel is consistent with the length direction of the lamp, and the above-mentioned lamp panel is generally arranged at the bottom of the lamp holder 10 and located at the middle position in the width direction of the lamp holder 10. The lampshade 20 is arranged at the bottom of the lamp holder 10 and is used for scattering and transmitting the light emitted by the light source 12 downward. The lampshade 20 is generally fixed at the outer peripheral edge of the bottom of the lamp holder 10 through a plurality of buckles 11.

[0030] The lampshade 20 of this embodiment is also in a strip shape as a whole. The inner wall of the main body of the lampshade 20 is distributed with outward convex stripes extending along the length direction (such as the X direction shown in Figure 2 The main body of the lampshade 20 comprises outward convex stripes arranged in sequence in the width direction (such as the Y direction shown in Figure 2The middle light-transmitting part 23 is located in the middle region of the Y direction shown in the figure, and the two side light-transmitting parts 21 are located on both sides of the middle light-transmitting part 23. Both of the two side light-transmitting parts 21 extend upwards from both sides of the middle light-transmitting part 23, so that the cross section of the main body of the lampshade 20 is in the shape of U. The middle light-transmitting part 23 is in the shape of a concave arc, and the parts where the two side light-transmitting parts 21 connect with the middle light-transmitting part 23 are both transition light-transmitting parts 22, which are in the shape of an arc smoothly connecting the middle light-transmitting part 23 and the corresponding side light-transmitting part 21. The curvature radius of the middle light-transmitting part 23 is larger than that of the two transition light-transmitting parts 22. The two side light-transmitting parts 21 are symmetrically arranged about the middle light-transmitting part 23 and are both in the shape of a flat plate. The distance between the two side light-transmitting parts 21 in the width direction of the lampshade 20 gradually increases from bottom to top, that is, both of the two side light-transmitting parts 21 are inclined to the outside of the lampshade 20 from bottom to top with respect to the vertical direction. In some embodiments, the two side light-transmitting parts 21 can also be in the shape of an arc, but the curvature radius of the arc is preferably relatively large, specifically, at least larger than that of the middle light-transmitting part 23.

[0031] The "main body of the lampshade 20" in the embodiment generally refers to the part other than the two end parts in the length direction of the lampshade 20. The two end parts of the lampshade 20 can be in the same structure as the main body of the lampshade 20, that is, the end surface of the lampshade 20 is in the shape of a flat plate. Of course, for the convenience of processing and the aesthetic consideration, the two end parts of the lampshade 20 can also be in a structure different from the main body of the lampshade 20, such as a hemispherical or other arc structure. Specifically, the two side light-transmitting parts 21 of the lampshade 20 in the embodiment are connected at the two end parts in the length direction of the lampshade 20 to form a whole closed runway-type side light-transmitting part 21, and the middle light-transmitting part 23 is located within the range surrounded by the runway-type side light-transmitting part 21. The two transition light-transmitting parts 22 of the lampshade 20 are connected at the two end parts in the length direction of the lampshade 20 to form a whole closed runway-type transition light-transmitting part 22, which separates the middle light-transmitting part 23 and the runway-type side light-transmitting part 21 on the inside and outside.

[0032] The inner walls of the middle light-transmitting part 23 and the two side light-transmitting parts 21 in the embodiment are provided with outward convex stripes. The outward convex stripes on the two side light-transmitting parts 21 are also connected at the two end parts in the length direction of the lampshade 20 to form a closed runway-type stripe structure. The inner surfaces of the two transition light-transmitting parts 22 of the lampshade 20 are smooth curved surfaces without outward convex stripes. Thus, when viewed from the outside, the transition light-transmitting part 22 forms a ring-shaped light-emitting lamp strip with slightly larger brightness, which ensures the visual effect of light emission of the lamp.

[0033] The cross section of the outward convex stripe on the inner side of the lampshade 20 of the embodiment can be one of a circular arc, a triangle, and a trapezoid. Specifically, the outward convex stripe with a cross section of a triangle or a trapezoid preferably has a structure with a symmetric center, such as a structure with a cross section of an isosceles triangle or an equilateral triangle or a structure with a cross section of an isosceles trapezoid.

[0034] The width of the main body of the lampshade 20 of the embodiment is denoted as W, the height is denoted as h, and the width of the middle light-transmitting portion 23 of the lampshade 20 is denoted as M. The above parameters satisfy the conditions: 3h≤W≤6h and 0.6W

[0035] The region of the middle light-transmitting portion 23 of the lampshade 20 corresponding to the position directly below the light source 12 is denoted as the direct light-transmitting region 230. In the preferred embodiment, the central angle of the direct light-transmitting region 230 with respect to the center of the light source 12 is generally about 25°. The curvature radius of the direct light-transmitting region 230 is substantially the same as that of the remaining part of the middle light-transmitting portion 23 of the lampshade 20 (except the direct light-transmitting region 230). Of course, the curvature radius of the direct light-transmitting region 230 can be slightly different from that of the remaining part of the middle light-transmitting portion 23 of the lampshade 20, but the difference is not large.

[0036] The outer convex stripes on the side light-transmitting part 21 are denoted as first stripes 211, the outer convex stripes on the normal light-transmitting area 230 of the middle light-transmitting part 23 are denoted as third stripes 233, and the outer convex stripes on the other areas of the middle light-transmitting part 23 are denoted as second stripes 232. The included angle formed by the lines connecting two adjacent first stripes 211 on the side light-transmitting part 21 to the center of the light source 12 is denoted as a first included angle, the included angle formed by the lines connecting two adjacent second stripes 232 on the middle light-transmitting part 23 to the center of the light source 12 is denoted as a second included angle, and the included angle formed by the lines connecting two adjacent third stripes 233 on the middle light-transmitting part 23 to the center of the light source 12 is denoted as a third included angle. The first included angle, the second included angle, and the third included angle are denoted as a, b, and c, respectively, and satisfy the following condition: 0.2b≤a≤3c. The design of the above-mentioned angle parameters widens the light emitted by the LED double-color light source after the light is refracted and reflected by the stripes and then transmitted through the lampshade 20, so that the overall width of the light-emitting lamp strip extends to both sides when the light-emitting lamp is viewed from the outside, and the visual effect of the light source 12 is more extensive and stereoscopic. In the preferred embodiment, a = 0.5b = 2c.

[0037] The "center of the light source 12" in the present embodiment refers to the center position of the light-emitting surface or the light-emitting area of the light source 12. As shown in FIG. 1, the light source 12 in the present embodiment is a lamp strip structure having two rows of parallel arranged lamp beads, and the center of the light source 12 refers to the line connecting the middle positions of the two rows of lamp beads. It is conceivable that when the light source 12 is in the form of a lamp strip structure with one row of lamp beads, the center of the light source 12 refers to the line connecting the positions of the lamp beads. Figure 3

[0038] Considering that the distance between the light source 12 and the corresponding area of the lampshade 20 increases when the width of the lampshade 20 increases, if the corresponding angle (relative to the center of the light source 12) between the adjacent stripes of the normal light-transmitting area 230 of the middle light-transmitting part 23 does not change, the light refraction and scattering efficiency will be low. Therefore, in the present embodiment, the third included angle (the included angle formed by the lines connecting two adjacent third stripes 233 on the middle light-transmitting part 23 to the center of the light source 12), the width dimension of the main body of the lampshade 20, and the height dimension of the main body of the lampshade 20 are reasonably limited to ensure that the corresponding angle between the adjacent stripes of the normal light-transmitting area 230 of the middle light-transmitting part 23 also increases when the width of the lampshade 20 increases. Specifically, the third included angle, the width dimension of the main body of the lampshade 20, and the height dimension of the main body of the lampshade 20 satisfy the condition: 0.15W≤c≤0.5W, and in the preferred embodiment, c = 6W / R2*π.

[0039] The above-mentioned parameters "W", "M", "h", "R1", "R2", "a", "b", and "c" are all numerical parts without units.​

Claims

1. An LED lamp comprising a lamp holder (10) and a lampshade (20) covering the bottom of the lamp holder (10), the lampshade (20) being in the shape of a long strip as a whole, and the inner wall of the main body of the lampshade (20) being provided with outwardly convex stripes extending along the length direction of the lampshade (20) and arranged in sequence in the width direction, characterized in that: The main body of the lampshade (20) includes a middle light-transmitting part (23) located in the middle region in the width direction and side light-transmitting parts (21) located on both sides of the middle light-transmitting part (23), both of the side light-transmitting parts (21) extend upward from both sides of the middle light-transmitting part (23), so that the cross section of the main body of the lampshade (20) is U-shaped, the inner walls of the middle light-transmitting part (23) and both of the side light-transmitting parts (21) are provided with the above-mentioned outward convex stripes, the middle light-transmitting part (23) is a concave arc structure, the portions where both of the side light-transmitting parts (21) connect with the middle light-transmitting part (23) are transition light-transmitting parts (22), both of the transition light-transmitting parts (22) are arc structures that smoothly transition from the middle light-transmitting part (23) to the corresponding side light-transmitting part (21), and the curvature radius of the middle light-transmitting part (23) is greater than that of both of the transition light-transmitting parts (22).

2. The LED light fixture of claim 1, wherein: The curvature radius of the middle light-transmitting part (23) is R1, the curvature radius of the transition light-transmitting part (22) is R2, and both satisfy the following condition: 5R2≤R1≤15R2.

3. The LED light fixture of claim 1, wherein: The width dimension of the main body of the lampshade (20) is W, the height dimension is h, the width dimension of the middle light-transmitting part (23) of the lampshade (20) is M, and all the parameters satisfy the condition: 3h≤W≤6h, 0.6W<M<W.

4. The LED light fixture of claim 3, wherein: The bottom of the lamp holder (10) is provided with a light source (12) at the middle position in the width direction, the area on the middle light-transmitting part (23) that is directly below the light source (12) is the direct light-transmitting area (230), the outward convex stripes on the side light-transmitting part (21) are the first stripes (211), the outward convex stripes on the direct light-transmitting area (230) of the middle light-transmitting part (23) are the third stripes (233), the outward convex stripes on the other areas of the middle light-transmitting part (23) except the direct light-transmitting area (230) are the second stripes (232), the included angle formed by the line connecting the centers of two adjacent first stripes (211) on the side light-transmitting part (21) and the light source (12) is the first included angle, the included angle formed by the line connecting the centers of two adjacent second stripes (232) on the middle light-transmitting part (23) and the light source (12) is the second included angle, the included angle formed by the line connecting the centers of two adjacent third stripes (233) on the middle light-transmitting part (23) and the light source (12) is the third included angle, and the above-mentioned first included angle, second included angle and third included angle are respectively a, b and c, wherein all of them satisfy the following condition: 0.2b≤a≤3c.

5. The LED light fixture of claim 3, wherein: The middle light-transmitting part (23) is provided with a light source (12) at the middle position in the width direction, the area corresponding to the light source (12) directly below the middle light-transmitting part (23) is recorded as the direct light-transmitting area (230), the outer convex stripes on the direct light-transmitting area (230) of the middle light-transmitting part (23) are recorded as the third stripes (233), the included angle formed by the lines connecting the two adjacent third stripes (233) on the direct light-transmitting area (230) to the center of the light source (12) is recorded as the third included angle, the third included angle, the width dimension of the main body of the lampshade (20) and the height dimension of the main body of the lampshade (20) satisfy the condition: 0.15W≤c≤0.5W.

6. The LED light fixture of claim 2, wherein: The curvature radius of the transition light-transmitting part (22) is in the range of 3mm-8mm.

7. The LED lamp of any one of claims 1-6, wherein: The two side light-transmitting parts (21) are symmetrically arranged about the middle light-transmitting part (23) and are both flat plate structures, and the distance between the two side light-transmitting parts (21) in the width direction of the lampshade (20) gradually increases from bottom to top.

8. The LED light fixture of any of claims 1-6, wherein: The inner side of the two transition light-transmitting parts (22) of the lampshade (20) is a smooth curved surface without the outer convex stripes.

9. The LED light fixture of any of claims 1-6, wherein: The cross section of the outer convex stripes is circular arc, triangular or trapezoidal.

10. The LED light fixture of any of claims 1-6, wherein: The two side light-transmitting parts (21) of the lampshade (20) are connected at the two ends in the length direction of the lampshade (20) to form a whole closed runway-type side light-transmitting part, the middle light-transmitting part (23) is located in the range surrounded by the runway-type side light-transmitting part (21), and the outer convex stripes on the two side light-transmitting parts (21) are also connected at the two ends in the length direction of the lampshade (20) to form a closed runway-type stripe structure.

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