Lampshade for LED lamp and LED lamp

Abstract

The lampshade for the LED lamp comprises a lampshade body, the whole lampshade body is in a long strip shape, the cross section of a main body part of the lampshade body is in a downwards-concave arc shape, and outwards-protruding stripes which extend in the length direction of the lampshade body and are sequentially arranged in the width direction are distributed on the inner wall of the main body part of the lampshade body. The main body part of the lampshade body is divided into a middle light-transmitting area located in the middle area and side light-transmitting areas located on the two sides of the middle light-transmitting area in the width direction of the lampshade body, and the width size of the cross section of each convex stripe on the middle light-transmitting area is larger than the width size of the cross section of each convex stripe on the two side light-transmitting areas. The lampshade has the advantages that the overall light-emitting intensity of the lampshade tends to be consistent, light refraction and light emission are more uniform, the problem of light-emitting surface fault can be effectively solved, and messy lines of light-emitting light spots are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of LED lamps, in particular to a lampshade for an LED lamp and the LED lamp. Background Art

[0002] LED lamps, or light-emitting diode lamps, are semiconductor solid-state light-emitting devices that use solid semiconductor chips as light-emitting materials and can be used in furniture lighting and commercial lighting. For example, LED tri-proof lamps are LED special lighting lamps made of special protective materials with dustproof, waterproof, explosion-proof (anti-corrosion) functions, and are widely used in various areas and places that require moisture-proof, dustproof, and corrosion-proof, such as the tri-proof lamp structure disclosed in the Chinese utility model patent with patent number ZL201420451780.7 (authorization announcement number CN204042523U) and the Chinese utility model patent with patent number ZL201620046987.5 (authorization announcement number CN205331838U). However, the existing tri-proof lamps have the problem of sufficient light in the middle and weak light on both sides when lighting, which leads to the problem that objects on the sides cannot be clearly illuminated.

[0003] In order to solve the above technical problems, the Chinese utility model patent application with application number CN201920268637.7 (authorization announcement number: CN209262821U) discloses a uniformly irradiated tri-proof lamp, including a lamp body, in which an illuminating light source is arranged, and the lamp body includes a lamp holder and a lampshade that cover each other, and the inner wall surface of the lampshade is provided with a light-guiding structure that can diverge the light emitted by the illuminating light source to the outside of the lampshade, and the light-guiding structure is a convex portion arranged on the inner wall surface of the lampshade, and the convex portion is a convex strip, and the cross section of the convex strip is in the shape of an isosceles triangle, so that the light can be better refracted and reflected on the side surfaces of the two sides of the convex strip. The above-mentioned convex portion extends along the length direction of the longitudinal section of the lampshade and is evenly distributed on the inner wall surface of the lampshade. By setting the light-guiding structure, the patent application can realize the control of the 120-degree light output light in a single direction through refraction and reflection, reduce the peak illumination, increase the edge illumination, make the light spot transition soft, and thus make the light of the tri-proof lamp irradiate evenly.

[0004] The three-proof lamp in the above patent application still has certain shortcomings: the convex strips on the inner wall of the lampshade of the above three-proof lamp are evenly arranged, and for the double lamp bead arrangement structure on the horizontal direction of the lamp panel, the middle position of the lampshade is the LED light output cross area, and the light intensity in this area is the maximum. If the lampshade structure with evenly arranged convex strips in the above patent application is adopted, uneven light output will still occur, and even the problem of light-emitting surface fault will occur, affecting the user experience.

[0005] Therefore, the existing lampshades for LED lamps need further improvement. Utility Model Content

[0006] The first technical problem to be solved by the utility model is to provide a lampshade for an LED lamp with uniform light output and which can effectively improve the problem of fault on the light output surface in view of the current status of the prior art.

[0007] The first technical problem to be solved by the utility model is to provide an LED lamp using the lampshade according to the current status of the prior art.

[0008] The technical solution adopted by the utility model to solve the first technical problem is: a lampshade for an LED lamp, comprising:

[0009] The lampshade body is in the shape of an elongated strip as a whole, and the cross section of the main part thereof is a concave arc. The inner wall of the main part of the lampshade body is provided with convex stripes extending along its length direction and arranged sequentially in the width direction. The main part of the lampshade body is divided into a middle light-transmitting area located in the middle area and side light-transmitting areas located on both sides of the middle light-transmitting area in the width direction. The width dimension of the cross section of each convex stripe on the middle light-transmitting area is greater than the width dimension of the cross section of each convex stripe on the two side light-transmitting areas.

[0010] The width range of the middle light-transmitting area can be reasonably selected according to the spacing between the side-by-side lamp beads of the lamp. Generally, the spacing between the side-by-side lamp beads on the lamp panel of the lamp is generally 7-10mm. In order to adapt to this, the cross-section of the middle light-transmitting area is an arc shape, and the corresponding central angle is denoted as α, where the value range of α is: 45°≤α≤135°.

[0011] In order to further ensure the uniformity of light output at all angles of the lampshade, a vertical plane passing through the bottom of the lampshade body and extending along the length direction of the lampshade body is recorded as a reference plane, which divides the middle light-transmitting area into two symmetrically arranged parts.

[0012] As an improvement, the wall surface of each outer convex stripe is arc-shaped. The use of arc-shaped outer convex stripes can make the light transition between adjacent outer convex stripes at the connecting position smoother, effectively improving the light fault and light spot problems.

[0013] In order to ensure the light-emitting effect of the end areas of the lampshade body, the two ends of the lampshade body in the length direction are spherical, and the two convex stripes symmetrically arranged on the middle light-transmitting area are correspondingly connected at the ends of the lampshade body to form a closed ring structure, and the two convex stripes symmetrically arranged on the two side light-transmitting areas are also correspondingly connected at the ends of the lampshade body to form a closed ring structure.

[0014] As an improvement, each convex stripe on the middle light-transmitting area is recorded as a first stripe, and the cross-section of the first stripe is recorded as b in the vertical direction and d in the horizontal direction. Each convex stripe on the two side light-transmitting areas is recorded as a second stripe, and the cross-section of the second stripe is recorded as a in the vertical direction and c in the horizontal direction, wherein the corresponding dimensions of the first stripe and the second stripe meet the conditions: 1 / 2≤a / b≤4 / 5, 1 / 6≤c / d≤1 / 4. The first stripe and the second stripe adopt the above-mentioned structural design: 1 / 2≤a / b≤4 / 5, which can ensure that the light is effectively filled between the two LEDs arranged side by side, reduce the generation of dark areas, and thus eliminate the granularity of the light-emitting LED. The overall visual light-emitting surface has no faults, and the light is more uniform. The structural design: 1 / 6≤c / d≤1 / 4 can expand the refraction angle of the light at the farthest lampshade from the LED lamp bead, so that the width of the light-emitting surface of the middle position is increased, so that the irradiated area will not form light spots and rainbow patterns.

[0015] As an improvement, each convex stripe on the middle light-transmitting area is recorded as a first stripe, and the center angle of the cross section of each first stripe with the light-emitting center on the lamp board of the lamp as the center is recorded as e, and each convex stripe on the two side light-transmitting areas is recorded as a second stripe, and the center angle of the cross section of each second stripe with the light-emitting center on the lamp board of the lamp as the center is recorded as f, and both meet the condition: 1.2≤f / e≤1.5. With the above structural design, when the LED dual color temperature works at the same time, the light of the two color temperatures can be merged and consistent, and no color difference color fault will be formed on the surface of the lampshade.

[0016] The technical solution adopted by the utility model to solve the second technical problem is: an LED lamp, including a lamp shell with an open lower portion and a lampshade covering the lower open portion of the lamp shell, wherein the lampshade is the above-mentioned lampshade for LED lamps.

[0017] Compared with the prior art, the utility model has the following advantages: since the width of the cross section of each convex stripe on the middle light-transmitting area of ​​the lampshade body is greater than the width of the cross section of each convex stripe on the two side light-transmitting areas, the middle light-transmitting area can dilute the light output, and the refraction angle can be about 160°, so that the overall light output intensity of the lampshade tends to be consistent, the light refraction is more uniform, and the fault problem of the light-emitting surface can be effectively improved, reducing the messy patterns of the light spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a lampshade according to an embodiment of the utility model;

[0019] Figure 2 A transverse cross-sectional view of a lampshade according to an embodiment of the utility model;

[0020] Figure 3It is a three-dimensional structural schematic diagram of the end portion of the lampshade of an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the LED lamp according to an embodiment of the utility model. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0024] Figure 1-Figure 4 A preferred embodiment of a lampshade for an LED lamp and an LED lamp is shown. The LED lamp is in the shape of a long strip as a whole, and includes a lamp housing 2, a lampshade, and a lamp panel assembly (not shown). The bottom of the lamp housing 2 is open, and the top of the lampshade is open. The lampshade is installed at the bottom opening of the lamp housing 2, and together with the lamp housing 2, defines an installation chamber for accommodating the above-mentioned lamp panel assembly. The lamp panel assembly generally includes a lamp panel and a control assembly. The lamp panel is provided with LED lamp beads, and the LED lamp beads are generally arranged in two or more groups side by side.

[0025] See also Figure 1 The lampshade body 1 of this embodiment is also in the shape of a long strip. The bottom walls of the two end portions 102 of the lampshade body 1 in the length direction are spherical. In this embodiment, the portion of the lampshade body 1 other than the two end portions 102 is the main body 101 of the lampshade body 1. The cross section of the main body 101 of the lampshade body 1 is a concave arc, and a circular arc is used in the preferred embodiment.

[0026] See also Figure 2, the main part 101 of the lampshade body 1 is divided into a middle light-transmitting area 11 located in the middle area and side light-transmitting areas 12 located on both sides of the middle light-transmitting area 11 in the width direction. The ends of the lampshade body 1 are also correspondingly divided into a first light-transmitting area 13 connected to the end of the middle light-transmitting area 11 and a second light-transmitting area 14 connected to the ends of the two side light-transmitting areas 12. The ends of the two side light-transmitting areas 12 are connected end to end through the above-mentioned second light-transmitting area 14 at the end area corresponding to the lampshade body 1, so that the lampshade body 1 as a whole forms a runway-shaped annular side light-transmitting area. The two ends of the middle light-transmitting area 11 are respectively connected to the two first light-transmitting areas 13, so that the lampshade body 1 as a whole forms a boat-shaped middle light-transmitting area with "slightly raised left and right ends", and the boat-shaped middle light-transmitting area is located within the range enclosed by the annular side light-transmitting area.

[0027] The inner wall of the main body of the lampshade body 1 is provided with outward convex stripes extending along the length direction thereof and arranged in sequence in the width direction, wherein the outward convex stripes on the middle light-transmitting area 11 are recorded as first stripes 111, and the outward convex stripes on the two side light-transmitting areas 12 are recorded as second stripes 121. The width dimension of the cross section of each outward convex stripe on the middle light-transmitting area 11 is greater than the width dimension of the cross section of each outward convex stripe on the two side light-transmitting areas 12. Correspondingly, an arc-shaped third stripe 131 is correspondingly provided on the first light-transmitting area 13 at the end of the lampshade body 1, and an arc-shaped fourth stripe 141 is correspondingly provided on the second light-transmitting area 14, and the two first stripes 111 symmetrically arranged on the middle light-transmitting area 11 are correspondingly connected at the end of the lampshade body 1 through the above-mentioned arc-shaped third stripe 131 to form a closed annular structure. Similarly, the two second stripes 121 symmetrically arranged on the two side light-transmitting areas 12 are also correspondingly connected at the end of the lampshade body 1 through the above-mentioned fourth stripe 141 to form a closed annular structure, wherein the width dimension of the cross section of the first stripe 111 is the same as the width dimension of the cross section of the third stripe 131, and the width dimension of the cross section of the second stripe 121 is the same as the width dimension of the cross section of the fourth stripe 141. Since the width of the cross section of each outwardly convex stripe on the middle light-transmitting area 11 of the lampshade body 1 is greater than the width of the cross section of each outwardly convex stripe on the two side light-transmitting areas 12, the middle light-transmitting area 11 can dilute the light output, and the refraction angle can be about 160°, so that the overall light output intensity of the lampshade tends to be consistent, the light is refracted more evenly, and the messy patterns of the light spots are reduced.

[0028] like Figure 2 As shown, the vertical plane passing through the bottom of the lampshade body 1 and extending along the length direction of the lampshade body 1 is recorded as a reference plane m. The reference plane m divides the middle light-transmitting area 11 into two symmetrically arranged parts. As a result, the lampshade body 1 is symmetrically arranged as a whole, ensuring the uniformity of light output at all angles of the lampshade.

[0029] The width range of the middle light-transmitting area 11 in this embodiment can be reasonably selected according to the spacing between the side-by-side lamp beads of the lamp. Generally, the spacing between the side-by-side lamp beads is 7-10mm. For this reason, the cross-section of the middle light-transmitting area 11 is an arc shape, and the corresponding central angle is denoted as α, where the value range of α is: 45°≤α≤135°.

[0030] The wall surface of each outer convex stripe on the lampshade body 1 is arc-shaped. The use of arc-shaped outer convex stripes can make the light transition between adjacent outer convex stripes at the connecting position smoother, effectively improving the light fault and light spot problems. Figure 2 The dimension in the Y direction shown in the figure is denoted as b, and the dimension in the horizontal direction (see Figure 2 The dimension in the X direction shown in FIG. 1 is denoted as d, and the cross-section of the second stripes 121 on the two side light-transmitting areas 12 is denoted as d in the vertical direction (see FIG. Figure 2 The dimension in the Y direction shown in the figure is denoted as a, and the dimension in the horizontal direction (see Figure 2 The dimension in the X direction shown in the figure is recorded as c, wherein the corresponding dimensions of the first stripe 111 and the second stripe 121 satisfy the conditions: 1 / 2≤a / b≤4 / 5, 1 / 6≤c / d≤1 / 4. The first stripe 111 and the second stripe 121 adopt the above-mentioned structural design: 1 / 2≤a / b≤4 / 5, which can ensure that the light is effectively filled between the two LEDs arranged side by side, reduce the generation of dark areas, and thus eliminate the granularity of the light-emitting LED. The overall visual light-emitting surface has no faults, and the light output is more uniform. The structural design: 1 / 6≤c / d≤1 / 4 can expand the refraction angle of the light at the farthest lampshade from the LED lamp bead, so that the width of the light-emitting surface in the middle position is increased, so that no light spots and rainbow patterns are formed in the irradiated area.

[0031] The central angle of the cross section of each first stripe 111 with the light emitting center on the lamp board of the lamp as the center is denoted by e, and the central angle of the cross section of each second stripe 121 with the light emitting center on the lamp board of the lamp as the center is denoted by f. Both satisfy the condition: 1.2≤f / e≤1.5. After the first stripes 111 and the second stripes 121 on the lampshade body 1 are defined by the above structure, when the LED dual color temperatures work at the same time, the light of the two color temperatures can be merged and consistent, and no color difference or color fault will be formed on the surface of the lampshade.

Claims

1. A lampshade for an LED lamp, comprising: The lampshade body (1) is in the shape of an elongated strip as a whole, and the cross section of the main part thereof is a concave arc. The inner wall of the main part of the lampshade body (1) is provided with convex stripes extending along its length direction and arranged in sequence in the width direction. The lampshade body (1) is characterized in that the main part of the lampshade body (1) is divided into a middle light-transmitting area (11) located in the middle area and side light-transmitting areas (12) located on both sides of the middle light-transmitting area (11) in the width direction, and the width dimension of the cross section of each convex stripe on the middle light-transmitting area (11) is greater than the width dimension of the cross section of each convex stripe on the two side light-transmitting areas (12).

2. The lampshade for LED lamp according to claim 1, characterized in that: The cross section of the intermediate light-transmitting area (11) is in the shape of an arc, and the corresponding central angle is denoted as α, wherein the value range of α is: 45°≤α≤135°.

3. The lampshade for LED lamp according to claim 1, characterized in that: A vertical plane passing through the bottom of the lampshade body (1) and extending along the length direction of the lampshade body (1) is recorded as a reference plane (m), and the reference plane (m) divides the middle light-transmitting area (11) into two symmetrically arranged parts.

4. The lampshade for LED lamp according to claim 1, characterized in that: The wall surface of each outer convex stripe is arc-shaped.

5. The lampshade for LED lamp according to claim 1, characterized in that: The two ends of the lampshade body (1) in the length direction are spherical, the two symmetrically arranged outer convex stripes on the middle light-transmitting area (11) are correspondingly connected at the ends of the lampshade body (1) to form a closed annular structure, and the two symmetrically arranged outer convex stripes on the two side light-transmitting areas (12) are also correspondingly connected at the ends of the lampshade body (1) to form a closed annular structure.

6. The lampshade for LED lamp according to any one of claims 1 to 5, characterized in that: Each outwardly convex stripe on the middle light-transmitting area (11) is recorded as a first stripe (111), and the vertical dimension of the cross section of the first stripe (111) is recorded as b, and the horizontal dimension is recorded as d. Each outwardly convex stripe on the two side light-transmitting areas (12) is recorded as a second stripe (121), and the vertical dimension of the cross section of the second stripe (121) is recorded as a, and the horizontal dimension is recorded as c. The corresponding dimensions of the first stripe (111) and the second stripe (121) satisfy the following conditions: 1 / 2≤a / b≤4 / 5, 1 / 6≤c / d≤1 / 4.

7. The lampshade for LED lamp according to any one of claims 1 to 5, characterized in that: Each convex stripe on the middle light-transmitting area (11) is recorded as a first stripe (111), and the central angle of the cross section of each first stripe (111) with the light-emitting center on the lamp board of the lamp as the center is recorded as e. Each convex stripe on the two side light-transmitting areas (12) is recorded as a second stripe (121), and the central angle of the cross section of each second stripe (121) with the light-emitting center on the lamp board of the lamp as the center is recorded as f. Both satisfy the condition: 1.2≤f / e≤1.

5.

8. An LED lamp, comprising a lamp housing (2) with an open lower portion and a lampshade arranged on the lower open portion of the lamp housing (2), characterized in that: The lampshade is the lampshade for LED lamps according to any one of claims 1 to 7.

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