A lamp

Abstract

A lamp, comprising: a long strip lamp stand; a light source, arranged on the lamp stand and extending or arranged at intervals along the length direction of the lamp stand; a strip lens, arranged on the lamp stand and located above the light source, extending along the length direction of the lamp stand; the cross section of the lens has an upper edge and a lower edge, the lower edge has a downwardly convex arc edge opposite to the light source, a first vertical edge extending downward from both ends of the arc edge, a second vertical edge, a first hypotenuse extending upward from the lower end of the first vertical edge in a direction away from the arc edge, and a second hypotenuse extending upward from the lower end of the second vertical edge in a direction away from the arc edge, the surface of the lens corresponding to the arc edge and the first vertical edge and the second vertical edge is a light-transmitting surface, and the surface of the lens corresponding to the first hypotenuse and the second hypotenuse is a light-reflecting surface. Compared with the prior art, the utility model can improve the illumination range and the uniformity of illumination.

Description

Technical Field

[0001] This utility model belongs to the field of lighting technology, and specifically relates to a lamp. Background Technology

[0002] In existing elongated linear luminaires, lenses are often incorporated to avoid light loss and to distribute the light source. For example, the invention patent application CN201010565032.8, entitled "Optical Lens and Light-Emitting Assembly Including the Optical Lens" (publication number CN102478207A), discloses a light-emitting assembly comprising an optical lens, multiple light sources, a circuit board, and a frame. The optical lens includes two opposing sidewall portions and a central portion connecting the two sidewall portions. The two sidewall portions and the central portion define a linear recessed space. The central portion includes a light input surface facing the light source and a light output surface facing away from the light source. The sidewall portions include reflective surfaces capable of total internal reflection of at least a portion of the light. Multiple light sources are housed within the linear recessed space of the optical lens; the circuit board supports the multiple light sources; and the frame supports the circuit board and extends outward from both sides of the circuit board.

[0003] The above solution can effectively reduce light loss and increase the illumination range, but the brightness of the light on the lamp illumination surface needs to be further improved. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a lamp that can improve the illumination range and the brightness of light, in light of the existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problem is: a lamp, comprising:

[0006] A long, narrow lamp stand;

[0007] The light source is mounted on the lamp holder and extends or is spaced apart along the length of the lamp holder;

[0008] A strip-shaped lens is mounted on the lamp holder and positioned above the light source, extending along the length of the lamp holder;

[0009] Its features are:

[0010] The lens has a cross-section with an upper edge and a lower edge. The lower edge has a downwardly convex arc-shaped edge opposite to the light source, a first vertical edge and a second vertical edge extending downward from both ends of the arc-shaped edge, a first oblique edge extending upward from the lower end of the first vertical edge in a direction away from the arc-shaped edge, and a second oblique edge extending upward from the lower end of the second vertical edge in a direction away from the arc-shaped edge. The surfaces of the lens corresponding to the arc-shaped edge, the first vertical edge, and the second vertical edge are light-transmitting surfaces, and the surfaces of the lens corresponding to the first oblique edge and the second oblique edge are light-reflecting surfaces.

[0011] Thus, the light source is divided into three parts, which are respectively incident on the light-transmitting surfaces of the lenses corresponding to the arc-shaped edge, the first vertical edge, and the second vertical edge. The light source incident on the light-transmitting surface corresponding to the arc-shaped edge can be focused after passing through the lens to uniformly illuminate the near and middle areas. The light sources incident on the light-transmitting surfaces corresponding to the first and second vertical edges can be better incident on distant areas after being reflected by their respective reflective surfaces, thus compensating for the uniformity of illumination at distant locations. Therefore, this invention can expand the illumination range while improving the brightness of the light and achieving uniform illumination of the irradiated surface.

[0012] To further achieve uniform illumination, preferably, the cross-section of the light source has a top edge, with the center of the edge designated as the center point. The line connecting the center point to the upper end of the first vertical side is the first line, the line connecting the center point to the upper end of the second vertical side is the second line, the line connecting the center point to the lower end of the first vertical side is the third line, and the line connecting the center point to the lower end of the second vertical side is the fourth line. The angle between the first and second lines is 72-73°, the angle between the first and third lines is 51-52°, and the angle between the second and fourth lines is 33-34°.

[0013] Preferably, the upper edge of the cross-section of the lens has a first horizontal edge, the first end of the first horizontal edge is located on the extension line of the first vertical edge, and the second end is located above the upper end of the second inclined edge. The upper edge of the cross-section of the lens also has a third vertical edge extending upward from the first end of the first horizontal edge, and a second horizontal edge extending from the upper end of the third vertical edge in a direction away from the first horizontal edge. The end of the second horizontal edge away from the first horizontal edge is located above the upper end of the first inclined edge.

[0014] Preferably, the height of the upper end of the first hypotenuse is greater than the height of the upper end of the second hypotenuse.

[0015] Preferably, the lower ends of the first vertical edge and the lower ends of the second vertical edge are basically on the same horizontal plane; the height of the upper end of the first vertical edge is greater than the height of the upper end of the second vertical edge.

[0016] In the above embodiments, preferably, the lens is supported on the lamp holder by two legs. The first leg extends substantially horizontally, with one end constrained to the lamp holder and the other end constrained to the portion corresponding to the upper end of the first inclined side of the lens. The second leg extends vertically, with its upper end constrained to the portion corresponding to the upper end of the second inclined side of the lens, and its lower end supported on the lamp holder. In this way, the legs can support the lens without blocking the light.

[0017] Preferably, one end of the first support leg is inserted into the first slot of the lamp holder, and the lower end of the second support leg is inserted into the second slot of the lamp holder.

[0018] In the above solutions, to improve the illumination range, preferably, the lamp holder is hollow inside to form a cavity with an open top, the open top extending along the length of the lamp holder and having two long sides extending along the length of the lamp holder;

[0019] The lens and the light source are constrained one above the other within the lamp holder, and the upper ends of the first and second inclined sides of the lens are respectively located inside the two long sides of the corresponding opening.

[0020] This avoids the light fixture blocking the light.

[0021] Preferably, it also includes a light-transmitting lamp cover located at the opening of the lamp holder for opening and closing. This lamp cover enhances the waterproofness of the lamp.

[0022] Compared with the prior art, the advantages of this utility model are as follows: by designing the lens with a structure having three light-transmitting surfaces and two reflective surfaces, the light source can be divided into three parts, which are respectively incident on the light-transmitting surfaces corresponding to the arc edge, the first vertical edge, and the second vertical edge. The light source incident on the light-transmitting surface corresponding to the arc edge can be focused after passing through the lens to uniformly illuminate the near and middle areas. The light source incident on the light-transmitting surfaces corresponding to the first and second vertical edges can be better incident on the distant areas after being reflected by their respective reflective surfaces, thus compensating for the uniformity of illumination at distant locations. Therefore, this utility model can expand the illumination range while improving the brightness of the light and achieving uniform illumination of the irradiated surface.

[0023] The lamp of this invention can be used for lighting in refrigerators, shelves, shops, etc. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0025] Figure 2 for Figure 1 A cross-sectional view;

[0026] Figure 3 for Figure 2 Distribution diagram of light sources in the middle. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] like Figures 1-3 As shown, this is a preferred embodiment of a lamp according to the present invention. The lamp includes a lamp holder 1, a light source 2, a lens 3, and a lamp cover 5.

[0029] The lamp holder 1 is elongated and hollow inside, forming a chamber with an opening 10 at the top. The opening 10 extends along the length of the lamp holder 1 and has two opposing long sides 1a extending along the length of the lamp holder 1. The lamp cover 5 is light-transmitting and is located at the opening 10 of the lamp holder 1 to open and close the opening 10.

[0030] The aforementioned light source 2 is located at the bottom of the chamber and extends along the length of the lamp holder 1.

[0031] The lens 3 is located inside the lamp holder 1 and above the light source 2, and is in the shape of a strip extending along the length of the lamp holder 1.

[0032] The lens 3 has a cross-section with an upper edge and a lower edge. The lower edge has a downward-convex arc-shaped edge 31 opposite to the light source 2, a first vertical edge 32 extending downward from both ends of the arc-shaped edge 31, a second vertical edge 33, a first inclined edge 34 extending upward from the lower end of the first vertical edge 32 away from the arc-shaped edge 31, and a second inclined edge 35 extending upward from the lower end of the second vertical edge 33 away from the arc-shaped edge 31. The surfaces of the lens 3 corresponding to the arc-shaped edge 31, the first vertical edge 32, and the second vertical edge 33 are light-transmitting surfaces, while the surfaces of the lens 3 corresponding to the first inclined edge 34 and the second inclined edge 35 are reflective surfaces. In this embodiment, the lower ends of the first vertical edge 32 and the second vertical edge 33 are basically at the same horizontal plane; the height of the upper end of the first vertical edge 32 is greater than the height of the upper end of the second vertical edge 33. Furthermore, the height of the upper end of the first inclined edge 34 is greater than the height of the upper end of the second inclined edge 35.

[0033] The upper edge of the cross-section of the lens 3 has a first horizontal edge 36, the first end of which is located on the extension line of the first vertical edge 32, and the second end is located above the upper end of the second inclined edge 35. The upper edge of the cross-section of the lens 3 also has a third vertical edge 37 extending upward from the first end of the first horizontal edge 36, and a second horizontal edge 38 extending from the upper end of the third vertical edge 37 in a direction away from the first horizontal edge 36. The end of the second horizontal edge 38 away from the first horizontal edge 36 is located above the upper end of the first inclined edge 34.

[0034] Meanwhile, the cross-section of the light source 2 has an edge located at the top. The center of this edge is designated as the center point. The line connecting the center point to the upper end of the first vertical side 32 is the first line; the line connecting the center point to the upper end of the second vertical side 33 is the second line; the line connecting the center point to the lower end of the first vertical side 32 is the third line; and the line connecting the center point to the lower end of the second vertical side 33 is the fourth line. The included angle α1 between the first and second lines is 72.82°; the included angle α2 between the first and third lines is 51.32°; and the included angle α3 between the second and fourth lines is 33.96°. See details... Figure 3 .

[0035] Thus, the light source can be divided into three parts, which are respectively incident on the light-transmitting surfaces corresponding to the arc-shaped edge, the first vertical edge, and the second vertical edge. The light source incident on the light-transmitting surface corresponding to the arc-shaped edge, after passing through the lens, can achieve focused light and uniformly illuminate the near and central areas. The light sources incident on the light-transmitting surfaces corresponding to the first and second vertical edges, after being reflected by their respective reflective surfaces, can better illuminate distant areas, compensating for the unevenness of illumination at distant locations. Furthermore, in this embodiment, the beam angle of the light source passing through the portion corresponding to angle a1 of lens 3 is between 40 and 60°, the beam angle of the light source passing through the portion corresponding to angle a2 of lens 3 is less than 10°, and the beam angle of the light source passing through the portion corresponding to angle a3 of lens 3 is approximately 15°.

[0036] In this embodiment, the lens 3 is supported within the lamp holder 1 by two legs. The first leg 41 extends substantially horizontally, with one end constrained to the lamp holder 1 and the other end constrained to the portion corresponding to the upper end of the first inclined side 34 of the lens 3. The second leg 42 extends vertically, with its upper end constrained to the portion corresponding to the upper end of the second inclined side 35 of the lens 3, and its lower end supported on the lamp holder 1. One end of the first leg 41 is inserted into the first slot 11 of the lamp holder 1, and the lower end of the second leg 42 is inserted into the second slot 12 of the lamp holder 1. The portions corresponding to the upper ends of the first inclined side 34 and the second inclined side 35 of the lens 3 are located inside the two long sides 1a of the corresponding openings 10.

[0037] In the specification and claims of this utility model, terms indicating direction, such as "upper," "lower," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A lighting fixture, comprising: Long, narrow lamp stand (1); The light source (2) is mounted on the lamp holder (1) and extends or is spaced apart along the length of the lamp holder (1); A strip-shaped lens (3) is mounted on the lamp holder (1) and located above the light source, extending along the length of the lamp holder (1); Its features are: The cross-section of the lens (3) has an upper edge and a lower edge. The lower edge has a downwardly convex arc-shaped edge (31) opposite to the light source (2), a first vertical edge (32) and a second vertical edge (33) extending downward from both ends of the arc-shaped edge (31), a first oblique edge (34) extending upward from the lower end of the first vertical edge (32) in a direction away from the arc-shaped edge (31), and a second oblique edge (35) extending upward from the lower end of the second vertical edge (33) in a direction away from the arc-shaped edge (31). The surfaces of the lens (3) corresponding to the arc-shaped edge (31), the first vertical edge (32), and the second vertical edge (33) are light-transmitting surfaces, and the surfaces of the lens (3) corresponding to the first oblique edge (34) and the second oblique edge (35) are light-reflecting surfaces.

2. The lamp according to claim 1, characterized in that: The cross-section of the light source (2) has an edge located at the top. The center of the edge is called the center point. The line connecting the center point and the upper end of the first vertical side (32) is the first line. The line connecting the center point and the upper end of the second vertical side (33) is the second line. The line connecting the center point and the lower end of the first vertical side (32) is the third line. The line connecting the center point and the lower end of the second vertical side (33) is the fourth line. The angle between the first line and the second line is 72-73°. The angle between the first line and the third line is 51-52°. The angle between the second line and the fourth line is 33-34°.

3. The lamp according to claim 2, characterized in that: The upper edge of the cross-section of the lens (3) has a first horizontal edge (36), the first end of which is located on the extension line of the first vertical edge (32), and the second end is located above the upper end of the second inclined edge (35). The upper edge of the cross-section of the lens (3) also has a third vertical edge (37) extending upward from the first end of the first horizontal edge (36), and a second horizontal edge (38) extending from the upper end of the third vertical edge (37) in a direction away from the first horizontal edge (36). The end of the second horizontal edge (38) away from the first horizontal edge (36) is located above the upper end of the first inclined edge (34).

4. The lamp according to claim 3, characterized in that: The height of the upper end of the first hypotenuse (34) is greater than the height of the upper end of the second hypotenuse (35).

5. The lamp according to claim 1, characterized in that: The lower end of the first vertical side (32) and the lower end of the second vertical side (33) are basically on the same horizontal plane; the height of the upper end of the first vertical side (32) is greater than the height of the upper end of the second vertical side (33).

6. The lamp according to any one of claims 1 to 5, characterized in that: The lens (3) is supported on the lamp holder (1) by two legs. The first leg (41) extends horizontally, with one end constrained to the lamp holder (1) and the other end constrained to the part corresponding to the upper end of the first inclined side (34) of the lens (3). The second leg (42) extends vertically, with its upper end constrained to the part corresponding to the upper end of the second inclined side (35) of the lens (3) and its lower end supported on the lamp holder (1).

7. The lamp according to claim 6, characterized in that: One end of the first support leg (41) is inserted into the first slot (11) of the lamp holder (1), and the lower end of the second support leg (42) is inserted into the second slot (12) of the lamp holder (1).

8. The lamp according to any one of claims 1 to 5, characterized in that: The lamp holder (1) is hollow inside to form a cavity with an opening (10) at the top. The opening (10) extends along the length direction of the lamp holder (1) and has two long sides (1a) extending along the length direction of the lamp holder (1). The lens (3) and the light source (2) are constrained one above the other within the lamp holder (1), and the upper ends of the first inclined side (34) and the upper ends of the second inclined side (35) of the lens (3) are respectively located inside the two long sides (1a) of the corresponding opening (10).

9. The lamp according to claim 8, characterized in that: It also includes a light-transmitting lamp cover (5), which is located at the opening (10) of the lamp holder (1) to open and close the opening (10).

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