Lampshade and lamp

Abstract

The embodiment of the utility model provides a lampshade which comprises a lampshade body, the lampshade body comprises an upper edge and a lower edge which are arranged in a spaced mode in the first direction, and the lampshade body is provided with an arc-shaped area which is in smooth transition from the upper edge to the lower edge. The orthographic projection of the upper edge on a plane perpendicular to the first direction is located in the closed area of the lower edge; the lower edge is provided with two opposite ends in the second direction, and the size of the lower edge in the third direction is gradually reduced from the middle to the two ends in the second direction; the first direction is the height direction of the cover body, and the second direction and the third direction are respectively perpendicular to the first direction and are perpendicular to each other; and the light reflecting structure comprises a plurality of quadrilateral light reflecting pieces which are arranged on the inner wall of the cover body. According to the embodiment of the invention, the lower edge of the cover body is in a specific shape, and the light reflecting structure is arranged on the inner wall of the cover body, so that light spots covering the long-strip-shaped area in a large range can be formed, and meanwhile, the uniformly-distributed illumination effect is realized.

Description

Technical Field

[0001] This utility model relates to the field of lighting fixtures, and in particular to a lampshade and a lamp. Background Technology

[0002] In the lighting field, desk lamps, as widely used lighting tools, have a crucial impact on the actual lighting effect due to the shape of the light spot they emit. Currently, most desk lamps on the market emit a circular light spot. However, in many scenarios, a circular light spot cannot accurately meet the lighting needs of specific areas. In reading scenarios, book pages are usually laid out horizontally, and traditional circular light spots cannot evenly illuminate the entire width of the page, potentially resulting in insufficient brightness on the sides. In office scenarios, where multiple documents or electronic devices are placed on a desk, a wider and more evenly distributed light coverage is also needed to improve work efficiency and comfort. Utility Model Content

[0003] Therefore, in order to overcome at least some of the defects and deficiencies in the prior art, this utility model provides a lampshade and a lamp that can form a light spot with a large coverage area and achieve uniform distribution of light.

[0004] Specifically, in one aspect, an embodiment of this utility model provides a lampshade, comprising: a lampshade body, the lampshade body including an upper edge and a lower edge spaced apart in a first direction, the lampshade body having an arcuate region smoothly transitioning from the upper edge to the lower edge, and the orthographic projection of the upper edge onto a plane perpendicular to the first direction being located within the enclosed region of the lower edge. The lower edge has two opposing ends in a second direction, and the dimension of the lower edge in a third direction gradually decreases from the middle to the two ends along the second direction. The first direction is the height direction of the lampshade body, and the second direction and the third direction are respectively perpendicular to the first direction and perpendicular to each other. A reflective structure including a plurality of quadrilateral reflectors, disposed on the inner wall of the lampshade body.

[0005] In an embodiment of this utility model, the plurality of quadrilateral reflective elements are arranged in multiple nested rings around the upper edge, covering the entire inner wall of the cover.

[0006] In an embodiment of this utility model, the common side of adjacent quadrilateral reflectors protrudes from the inner wall of the cover.

[0007] In an embodiment of this utility model, the plurality of quadrilateral reflectors are arranged radially with the upper edge as the center and gradually moving closer to the lower edge.

[0008] In embodiments of this utility model, the quadrilateral reflector is kite-shaped or rhomboid.

[0009] In an embodiment of this utility model, the protrusion height of the common side of adjacent quadrilateral reflectors is 0.1 to 0.3 cm.

[0010] In an embodiment of this utility model, the common side of adjacent quadrilateral reflectors is an arc-shaped structure, and two adjacent quadrilateral reflectors include inclined surfaces disposed on opposite sides of the common side. The inclined surfaces on both sides gradually approach each other from the inner wall of the cover towards the common side. The connection between the inclined surfaces and the inner wall of the cover is an arc-shaped surface.

[0011] In an embodiment of this utility model, the reflective structure surface is provided with a silver electroplated layer.

[0012] In an embodiment of this invention, the lower edge is elliptical, and the ratio of the major axis to the minor axis of the ellipse is 3:2. The major axis is the maximum distance of the lower edge in the second direction, and the minor axis is the maximum distance of the lower edge in the third direction.

[0013] On the other hand, the present invention provides a lamp that includes the lampshade described in any of the preceding claims.

[0014] As can be seen from the above, the technical features of this utility model can have one or more of the following beneficial effects: By setting the cover to a shape that is narrow at both ends and wide in the middle, the light, after being reflected by the inner wall of the cover, is distributed along the long and short axes on the illuminated surface, making the light spot cover a wider area in the length direction. The illuminated light spot is more suitable for scenarios such as reading and office work that require long strip lighting areas, thus improving the actual utilization efficiency of the space. At the same time, multiple quadrilateral reflectors are set on the inner wall of the cover. Combined with multiple quadrilateral reflectors, when light is emitted from the light source, it will hit the surface of the quadrilateral reflectors at different angles. After multiple reflections, the light is evenly dispersed in different directions, avoiding the light from concentrating in a local area, which helps to improve the uniformity of light distribution in the target area. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a lampshade structure provided for an embodiment of the present utility model.

[0017] Figure 2 for Figure 1 An enlarged schematic diagram of region A in the middle.

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of a quadrilateral reflector.

[0019] Figure 4 for Figure 1 Another structural diagram of the central lampshade.

[0020] Figure 5 This is a schematic diagram of a lamp structure provided for an embodiment of the present utility model.

[0021] Figure 6 for Figure 5 Another structural diagram of the lamp.

[0022] Figure 7 for Figure 5 Scatter plot of light intensity distribution of the light spot illuminated by the lamp.

[0023] Figure 8 for Figure 5 A two-dimensional pseudo-color filled contour map of the light spot illuminated by a lamp.

[0024] Figure 9 for Figure 5 Two-dimensional thermal image of the light spot illuminated by the lamp.

[0025] [Explanation of Key Figure Markings]

[0026] 1: Lampshade; 10: Cover body; 11: Upper edge; 12: Lower edge; 13: Reflective structure; 130: Quadrilateral reflector; 1301: Sloping surface; 1302: Curved surface structure; 1303: Shared edge; 2: Lamp fixture. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments described in this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] It should be noted that all directional indicators (such as up, down, left, right, front, back, top, and bottom) in this embodiment of the invention are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the attached figure). If the specific posture changes, the directional indicator will also change accordingly. Furthermore, the term "vertical" in the embodiments and claims refers to an angle of 90° between two components or a deviation of -5° to +5°, and the term "parallel" refers to an angle of 0° between two components or a deviation of -5° to +5°.

[0029] In this embodiment of the invention, the use of terms such as "first" and "second" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0030] On the one hand, refer to Figure 1 , Figure 2 and Figure 4 As shown in the figure, an embodiment of the present invention provides a lampshade 1, comprising: a cover body 10 and a reflective structure 13. The cover body 10 includes an upper edge 11 and a lower edge 12 spaced apart in a first direction. The cover body 10 has an arc-shaped region that smoothly transitions from the upper edge 11 to the lower edge 12, and the orthographic projection of the upper edge 11 onto a plane perpendicular to the first direction lies within the enclosed region of the lower edge 12. The lower edge 12 has two opposite ends in a second direction, and the dimension of the lower edge 12 in a third direction gradually decreases from the middle to the two ends along the second direction. The first direction is the height direction of the cover body 10, and the second direction and the third direction are perpendicular to the first direction and to each other. The reflective structure 13 includes a plurality of quadrilateral reflectors 130 and is disposed on the inner wall of the cover body 10.

[0031] Specifically, the first direction is the height direction from the lower edge 12 to the upper edge 11, the second direction is the length direction of the lower edge 12, and the third direction is the width direction of the lower edge 12. The enclosure 10 encloses the light source, which is located at the upper edge 11. It is used to reflect, refract, or scatter the light emitted by the light source in a specific direction to achieve directional lighting, while protecting the light source from external impacts and dust contamination. The lower edge 12 of the enclosure 10 has a shape that is narrow at both ends and wide in the middle along the length direction, so that the illuminated light spot has a wider coverage area in the length direction. The light spot is distributed on the long axis and the short axis, forming a light spot similar to an ellipse. The inner wall of the enclosure 10 is provided with a reflective structure 13 composed of multiple quadrilateral reflectors 130. The quadrilateral reflectors 130 can be, for example, rhomboid, kite-shaped, etc. The angles and side lengths of the quadrilaterals in the quadrilateral reflector 130 can be flexibly adjusted according to the optical design of the lamp 2, enabling precise control of the reflection direction and angle of light to achieve specific light distribution requirements, such as concentrating light onto a specific area or distributing it evenly within a certain range, thus meeting the lighting needs of different scenarios. In this embodiment, the reflector structure 13 has a silver electroplated layer on its surface. The silver electroplated layer has a high light reflectivity, which can reflect incident light to the maximum extent, thereby improving the reflectivity of the reflector structure 13. Exemplarily, the cover 10 can be made of materials such as plastic or metal.

[0032] The lower edge 12 of the enclosure 10 has a structure that is narrow at both ends and wide in the middle along its length. This allows light emitted from the light source to strike the inner wall of the enclosure 10, and the inner wall at different locations reflects the light in different directions according to its curvature and normal direction. Due to the structural characteristics of the lower edge 12, the reflected light rays intersect and distribute within a specific spatial area, and the light spot gradually forms an elliptical-like shape along the major and minor axes. For example, in the first direction, the inner wall portion of the enclosure 10 near both ends of the lower edge 12 reflects light to a relatively concentrated area, forming the major axis direction of the elliptical light spot, while in the second direction, the inner wall near both ends of the lower edge 12 reflects light, forming the minor axis direction of the elliptical light spot. In applications such as reading and office work, it can adapt well to spaces of specific shapes or layouts. Compared to circular light spots, it can more evenly cover these spaces and reduce blind spots. Compared to rectangular light spots, its soft edges are more suitable for places with high requirements for visual comfort, without producing sharp shadow boundaries. Furthermore, the elliptical light spot can cover the long strip of work area with light, making the limited space look neater and brighter, and improving the actual utilization efficiency of the space.

[0033] Secondly, the inner wall is provided with multiple quadrilateral reflectors 130. In the embodiments of the present invention, the quadrilateral reflectors 130 are kite-shaped or rhomboid. Utilizing their multiple reflective surfaces, light can be reflected from different angles. Experiments have shown that using quadrilateral reflectors 130, especially kite-shaped or rhomboid ones, results in better uniformity of light distribution. The quadrilateral reflectors 130 reflect light multiple times and distribute it evenly in all directions, effectively eliminating differences in brightness within the illuminated area, allowing light to be evenly distributed within the target area, improving overall lighting comfort, and reducing visual fatigue. The elliptical shape of the cover 10 and the reflective structure 13 work together to reduce light loss caused by direct refraction into ineffective areas or absorption by the material of the cover 10. By reflecting light multiple times, more light is effectively projected onto the desired illuminated area, achieving higher light utilization under the same light source power, thus achieving energy saving and efficiency improvement.

[0034] In the embodiments of this utility model, reference is made to Figure 1 As shown, the plurality of quadrilateral reflectors 130 are arranged in multiple nested rings around the upper edge 11, covering the entire inner wall of the cover 10. Specifically, the plurality of quadrilateral reflectors 130 form an integrally formed honeycomb-like reflective structure 13. Except for the quadrilateral reflectors 130 near the lower edge 12 and upper edge 11 on the inner wall of the cover 10, for any quadrilateral reflector 130 at any other different position, each of its four sides is shared with another quadrilateral reflector 130, thus forming a distribution pattern in which four quadrilateral reflectors 130 are evenly arranged around any quadrilateral reflector 130.

[0035] Multiple quadrilateral reflectors 130 cover the entire inner wall of the enclosure 10, reflecting light from various angles to ensure sufficient reflection and scattering of light within the enclosure 10. Regardless of where the light emitted from the light source strikes the inner wall of the enclosure 10, it is reflected in other directions by the corresponding quadrilateral reflectors 130, effectively preventing uneven brightness caused by light concentrating in certain areas. This achieves uniform light distribution within the space, providing a more comfortable lighting environment. The fully covered reflectors maximize light capture and reflection, reducing light loss caused by direct illumination of the inner wall of the enclosure 10.

[0036] In embodiments of this invention, the common side 1303 of adjacent quadrilateral reflectors 130 protrudes from the inner wall of the lampshade 10. The protruding common side 1303 effectively increases the reflective surface, increasing the number of reflections of light on the inner wall of the lampshade 10, further scattering the light in different directions, making the light distribution more uniform, thereby improving the reflective efficiency of the entire lampshade 1 and enhancing the uniformity of illumination. In some embodiments, refer to... Figure 3As shown, the common side 1303 of the quadrilateral reflector 130 is an arc-shaped structure 1302. Two adjacent quadrilateral reflectors 130 include inclined surfaces 1301 on opposite sides of the common side 1303, with the inclined surfaces 1301 gradually approaching the common side 1303. The common side 1303 of the arc-shaped structure 1302 and the gradually approaching inclined surfaces 1301 allow for a more complex reflection path when light is reflected. When light shines on the arc-shaped structure 1302, it is reflected in multiple different directions, and the inclined surfaces 1301 further change the direction of light propagation, allowing the light to be fully scattered within the lampshade 1. This results in more uniform and softer illumination, effectively avoiding problems such as excessively bright local spots or heavy shadows.

[0037] In the embodiments of this utility model, reference is made to Figure 1 As shown, multiple quadrilateral reflectors 130 are arranged radially from the upper edge 11 towards the lower edge 12. This radial arrangement allows light emitted from the light source to be scattered more evenly in all directions along the radial reflectors, resulting in a more uniform probability of reflection in all directions and reducing the concentration of light in a particular area, thus achieving a more uniform illumination distribution. In this embodiment, each quadrilateral reflector 130 shares four sides with another quadrilateral reflector 130, so that four quadrilateral reflectors 130 are evenly arranged around any given quadrilateral reflector 130, forming multiple concentric circles centered on the upper edge 11. Furthermore, the size of the quadrilateral reflectors 130 gradually increases from the upper edge 11 towards the lower edge 12.

[0038] In some embodiments, the multiple quadrilateral reflectors 130 can be arranged irregularly, and the size of each quadrilateral reflector 130 can be different, which has been shown to achieve uniform light distribution. Specifically, quadrilateral reflectors 130 of the same size can be used, with the number of quadrilateral reflectors 130 arranged around the upper edge 11 being less than the number of quadrilateral reflectors 130 arranged around the lower edge 12. The variation in the number of quadrilateral reflectors 130 better fits the shape of the cover 10, increasing the reflective area and improving the light reflection efficiency. Light is lost after multiple reflections; this arrangement can reflect more light to this area, avoiding excessively dark bottom lighting and thus making the light distribution more uniform.

[0039] In an embodiment of this invention, the protrusion height of the common side 1303 of adjacent quadrilateral reflectors 130 is 0.1–0.3 cm. This protrusion height range can change the reflection angle of light and prevent concentrated light reflection from causing glare. This allows for better light scattering within the lampshade 1, improving illumination uniformity while maintaining a certain light intensity. In an embodiment of this invention, referring to… Figure 2 and Figure 3 As shown, the common side 1303 of adjacent quadrilateral reflectors 130 is an arc-shaped structure 1302. Each pair of adjacent quadrilateral reflectors 130 includes inclined surfaces 1301 on opposite sides of the common side 1303. The inclined surfaces 1301 gradually approach each other from the inner wall of the housing 10 towards the common side 1303. The connection between the inclined surfaces 1301 and the inner wall of the housing 10 is an arc-shaped surface. The arc-shaped surface and the arc-shaped structure 1302 enable smoother and more natural reflection of light on the inner wall of the housing 10. Light reflection onto the arc-shaped surface and the arc-shaped structure 1302 avoids significant abrupt changes in refraction or scattering, allowing light to propagate and reflect more evenly along the inner wall of the housing 10, further improving the uniformity of illumination and reducing shadows and glare. Secondly, compared to right-angled or acute-angled surfaces, the curved surface and curved structure 1302 effectively increase the area of ​​light reflection, enabling more light rays to be reflected in different directions, making the propagation path of light within the lampshade 1 more diverse, thereby expanding the range of light reflection, improving the efficiency of light utilization, and allowing the lamp 2 to illuminate a wider area.

[0040] In the embodiments of this utility model, reference is made to Figure 1 As shown, the lower edge 12 is elliptical, with the ratio of its major axis D1 to its minor axis D2 being 3:2. The major axis D1 represents the maximum distance of the lower edge 12 in the second direction, and the minor axis D2 represents the maximum distance of the lower edge 12 in the third direction. This ratio results in a relatively symmetrical elliptical profile for the lower edge 12. The symmetrical elliptical profile of the lower edge 12 makes the light reflection path within the housing 10 more regular. After multiple symmetrical reflections through the inner wall, the light emitted by the light source can be evenly scattered in all directions. Stable light intensity can be obtained at the center position in both the major and minor axis directions, providing users with a more comfortable and uniform lighting environment.

[0041] On the other hand, refer to Figure 5 and Figure 6As shown, the present invention provides a lamp 2, including the lampshade 1 described in any of the preceding claims. By utilizing the lampshade 1 provided above, light undergoes multiple reflections, and the shape of the lampshade 10 effectively guides the light, causing the lamp 2 to emit an elliptical-shaped light spot with uniform illumination distribution. This effectively reduces shadows and glare, and improves light utilization. Under the same light source power, the lamp 2 provided in this embodiment can emit sufficient and effective illumination, effectively saving energy compared to traditional lamps 2, thus reducing energy consumption and operating costs.

[0042] Figure 7 , Figure 8 and Figure 9 The lamp 2 and lampshade 1 mentioned in the above embodiments, used in the experimental test, specifically have an elliptical lower edge 12, and quadrilateral reflectors 130 that are kite-shaped and arranged radially to cover the inner wall of the shade 10, with a common raised edge. (Refer to...) Figure 7 As shown, most data points are concentrated in the center of the light spot, forming a relatively dense cluster. The scattered distribution of the points outlines the general shape of the light spot, which is elliptical. The extent of the light spot's extension along the X and Y axes can be observed. The light intensity is stronger where the points are denser and weaker where they are sparser, showing a gradual decrease in light intensity from the center to the edge of the light spot. This gentle transition in light intensity effectively reduces visual fatigue. The light spot illuminated by this lampshade 1 is elliptical, with high illuminance and uniform distribution at the center. Furthermore, the light spot's extension along the X and Y axes makes it more suitable for office and reading scenarios, ensuring good coverage of the work area and providing uniform illumination.

[0043] Reference Figure 8 As shown in the image, the color distribution reveals that the central area is red with a high light intensity, transitioning outwards to orange, yellow, green, and blue, with the light intensity gradually decreasing. This indicates that the light intensity is highest at the center of the spot and decreases with distance from the center. Furthermore, the overall color distribution exhibits a degree of symmetry; the light intensity is essentially consistent at the same distance along the horizontal and vertical axes of the elliptical spot, indicating that the light diffuses evenly to a certain extent. Compared to a circular spot, an elliptical spot can more evenly cover a long strip of area, avoiding dark areas at the junctions of circles and reducing light waste.

[0044] Reference Figure 9 As shown, the central area of ​​the image is bright green, gradually darkening to a darker green towards the edges, indicating higher light intensity at the center and a gradual decrease in intensity towards the periphery. Displayed as a grid of squares, the squares in the central high-intensity area are brighter and more concentrated, while the squares in the surrounding low-intensity areas are darker and sparser, showing a decreasing trend in light intensity from the center outwards. The lamp 2 provided in this embodiment conforms to the national standard for desk lamps, emitting light concentrated in the central area, making it suitable for scenarios such as reading and writing where localized, focused lighting is provided, offering sufficient illumination to a specific area.

[0045] Furthermore, it is understood that the foregoing embodiments are merely illustrative examples of this utility model. Provided that the technical features do not conflict, the structure is not contradictory, and the inventive purpose of this utility model is not violated, the technical solutions of the various embodiments can be arbitrarily combined and used.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lampshade (1), characterized in that, include: A cover (10) includes an upper edge (11) and a lower edge (12) spaced apart in a first direction. The cover (10) has an arcuate region that smoothly transitions from the upper edge (11) to the lower edge (12), and the orthographic projection of the upper edge (11) onto a plane perpendicular to the first direction is located within the enclosed region of the lower edge (12). The lower edge (12) has two opposite ends in a second direction, and the size of the lower edge (12) in a third direction gradually decreases from the middle to the two ends along the second direction. The first direction is the height direction of the cover (10), and the second direction and the third direction are perpendicular to the first direction and to each other. The reflective structure (13) includes a plurality of quadrilateral reflective elements (130) and is disposed on the inner wall of the cover (10).

2. The lampshade (1) according to claim 1, characterized in that, The multiple quadrilateral reflectors (130) are arranged in multiple nested rings around the upper edge (11) and cover the entire inner wall of the cover (10).

3. The lampshade (1) according to claim 2, characterized in that, The common side (1303) of the adjacent quadrilateral reflectors (130) protrudes from the inner wall of the cover (10).

4. The lampshade (1) according to claim 2, characterized in that, The plurality of quadrilateral reflectors (130) are arranged radially with the upper edge (11) as the center and gradually moving closer to the lower edge (12).

5. The lampshade (1) according to claim 1, characterized in that, The quadrilateral reflector (130) is kite-shaped or rhomboid.

6. The lampshade (1) according to claim 3, characterized in that, The height of the common side (1303) of adjacent quadrilateral reflectors (130) is 0.1 to 0.3 cm.

7. The lampshade (1) according to claim 3, characterized in that, The common side (1303) of the adjacent quadrilateral reflectors (130) is an arc surface structure (1302). The two adjacent quadrilateral reflectors (130) include inclined surfaces (1301) disposed on opposite sides of the common side (1303). The inclined surfaces (1301) on both sides gradually approach each other from the inner wall of the cover (10) toward the common side (1303). The connection between the inclined surface (1301) and the inner wall of the cover (10) is an arc-shaped surface.

8. The lampshade (1) according to claim 1, characterized in that, The reflective structure (13) has a silver electroplated layer on its surface.

9. The lampshade (1) according to claim 1, characterized in that, The lower edge (12) is elliptical, and the ratio of the major axis to the minor axis of the ellipse is 3:2; the major axis is the maximum distance of the lower edge (12) in the second direction, and the minor axis is the maximum distance of the lower edge (12) in the third direction.

10. A lamp (2), characterized in that, Includes the lampshade (1) according to any one of claims 1 to 9.

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