A strip light

Abstract

The application discloses a bar lamp, which comprises a bar lamp holder, a center line of a vertical irradiation surface is arranged in a plane vertical to the length direction of the bar lamp holder, two light source mounting seats are arranged on the bar lamp holder and are oppositely arranged and located on two sides of the center line, two rows of light sources are arranged on the two light source mounting seats respectively, the light emission directions of the two rows of light sources are all towards the irradiation surface, and the two light axes intersect at the center line or in the vicinity of the center line, two lenses are arranged on one light source mounting seat and are located in the light emission direction of the corresponding light source, and each lens comprises a light inlet surface and a light outlet surface, the light source mounting seat on the opposite side of the light source is shielded to reduce glare, the setting of the light shield cover is reduced on one hand to improve the light emission efficiency, and better anti-glare effect is achieved on the other hand.

Description

Technical Field

[0001] The invention relates to a lighting fixture, in particular to a strip light. Background Art

[0002] Compared to traditional lighting fixtures, LED lamps offer the advantages of small size, low energy consumption, and high luminous efficiency, leading to their rapid adoption. Simultaneously, people are constantly pursuing better lighting effects, hoping that LED lamps can meet a variety of lighting needs. Especially when large areas need to be illuminated, it is desirable to ensure that the illumination of the illuminated area is as uniform and consistent as possible. Because the inherent light output of LED chips cannot meet lighting requirements, lenses are required for secondary optical design to meet specific lighting requirements. According to the laws of light illumination, the farther the light is illuminated, the more severe the scattering and the larger the illumination range, compared to areas with closer illumination distances. Therefore, the illumination of areas farther away decreases, leading to poor illumination uniformity.

[0003] To this end, some researchers have proposed setting a light source that is tilted relative to the optical axis of the irradiation surface, combined with the light distribution of optical components to achieve uniform light output over a large area. This will cause glare problems, and an anti-glare cover needs to be set in the light output direction. Due to size issues, the anti-glare cover is generally set closer, which will reduce the light output efficiency. Summary of the Invention

[0004] In view of this, the present invention provides a strip light to solve the above technical problems.

[0005] A strip light, comprising:

[0006] A strip light stand, having a center line perpendicular to the length of the strip light stand and two light source mounting seats arranged opposite to each other and located on either side of the center line;

[0007] Two rows of light sources are respectively arranged on two light source mounting bases, with light emitting directions both facing the illumination surface and two optical axes intersecting at or near the center line;

[0008] The two lenses are respectively arranged on a light source mounting seat and located in the light emitting direction of the corresponding light source, and both include a light incident surface and a light emitting surface.

[0009] Preferably, the light of the light source includes blocked light extending to below the top edge of the light source mounting seat on the opposite side, and the portion of the light emitting surface away from the irradiation surface refracts the blocked light of the light source over the top edge of the light source mounting seat on the opposite side.

[0010] Preferably, the angle between the optical axis and the center line is 50° to 80°.

[0011] Preferably, the maximum light-emitting direction of the light from the light source after passing through the corresponding lens is the light distribution axis, and the angle between the light distribution axis and the center line is 60° to 85°.

[0012] Preferably, the extension line of the light distribution axis is located above the top edge of the light source mounting seat on the opposite side.

[0013] Preferably, the angle between the light distribution axis and the center line is 70° to 85°.

[0014] Preferably, the strip light according to claim 1 is characterized in that the light from the light source is refracted and distributed on the light-incoming surface and the light-outgoing surface.

[0015] Preferably, the light emitting surface includes:

[0016] a first light-focusing portion, comprising a portion for refracting blocked light from the light source over a top edge of the light source mounting seat on the opposite side, the portion being located on a side of the light distribution axis away from the illumination surface, and focusing light from the corresponding light source onto the light distribution axis;

[0017] The second light-concentrating portion is located on a side of the light distribution axis close to the irradiation surface, and focuses the light of the corresponding light source onto the light distribution axis.

[0018] Preferably, the light emitting surface further comprises a diffusion portion connected to the end of the second light-collecting portion away from the light distribution axis (403).

[0019] Preferably, the light incident surface is recessed toward the light emitting surface.

[0020] Preferably, the lens is a strip lens extending along the length line of the strip light stand.

[0021] Preferably, the light source is a plurality of point light sources arranged at intervals along the length direction, and the lens is a single lens provided corresponding to each point light source.

[0022] Preferably, the device further comprises a lampshade arranged on the strip-shaped lamp stand and located outside the lens.

[0023] Preferably, the lampshade is an arc-shaped surface convex along the light emitting direction.

[0024] Technical effects of the present invention:

[0025] The strip light of the present invention provides two oppositely arranged light source mounting seats in the strip light frame. The light source mounting seats on the opposite sides of the light source block and reduce glare. On the one hand, the setting of the light shield is reduced to improve the light output efficiency, and on the other hand, it also has a better anti-glare effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0027] Figure 1 FIG. 4 is a schematic diagram of the three-dimensional structure of the strip light of this embodiment.

[0028] Figure 2 FIG. 4 is an exploded diagram of the strip light of this embodiment.

[0029] Figure 3 for Figure 2 An enlarged schematic diagram of part A.

[0030] Figure 4 FIG2 is a schematic cross-sectional view of the strip light of this embodiment on a plane perpendicular to the length direction.

[0031] Figure 5 FIG. 4 is a diagram showing the positional relationship between the strip light of this embodiment and the illumination surface in a plane perpendicular to the length direction.

[0032] Figure 6 FIG. 4 is a light path diagram of the strip light of this embodiment in a plane perpendicular to the length direction.

[0033] Figure 7 FIG. 4 is a light intensity distribution diagram of the strip light of this embodiment in a plane perpendicular to the length direction.

[0034] Figure 8 Schematic diagram of the enlarged structure of the lens of this embodiment.

[0035] Figure 9 Schematic diagram of the three-dimensional structure of a lens according to another embodiment. DETAILED DESCRIPTION

[0036] The following is a further detailed description of specific embodiments of the present invention based on the accompanying drawings. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0037] like Figures 1 to 9 As shown, the strip light of this embodiment includes a strip light frame 100 , two rows of light sources 300 and two lenses 400 .

[0038] The strip light of the present invention has light sources and lenses with similar structures arranged along its length. The main light distribution occurs in the plane perpendicular to its length. Therefore, the following content is mainly described based on this plane.

[0039] The strip light stand 100 is provided with a centerline 101 perpendicular to the irradiation surface 200 in a plane perpendicular to its length. The strip light stand 100 is provided with two light source mounting bases 102 arranged opposite each other and located on either side of the centerline 101. The strip light stand 100 is used to carry the light source and other components and is also used to be fixed to the installation position. The light source mounting base 102 can be separately provided and fixed to the strip light stand 100, or can be integrally formed with the strip light stand 100. The light source mounting base 102 is used to mount the light source 300 and the lens 400. It is generally configured to be opaque, which will have a certain effect of blocking the light source 300 and the lens 400 on the opposite side, thereby preventing glare. This has a better anti-glare effect than setting a light shield in the light emitting direction of the light source 300 and the light blocked by less light, which can ensure anti-glare while improving lighting efficiency.

[0040] In order to better arrange the light source mounting seat 102 , in this embodiment, the strip light holder 100 is in the form of a U-shaped groove, and both sides of the U-shaped groove serve as the light source mounting seat 102 .

[0041] The two rows of light sources 300 are respectively arranged on two light source mounting bases 102, the light emission directions are toward the illumination surface and the two optical axes 301 intersect at the center line 101 or near it. It can be seen that the optical axes of the two rows of light sources 300 are tilted relative to the illumination surface 200, so that a larger illumination range can be obtained.

[0042] In order to distribute the light of the light source 300 as needed to obtain the desired lighting effect, two lenses 400 are respectively arranged on a light source mounting seat 102 and located in the light emitting direction of the corresponding light source 300, and both include a light input surface 401 and a light output surface 402.

[0043] The light source mounting base 102, light source 300 and lens 400 can be identical and symmetrically arranged, or can be adjusted appropriately as needed. In this embodiment, for ease of manufacturing and more uniform light distribution, the structures on both sides are identical and symmetrically arranged.

[0044] Although the light source mounting base 102 can be set at a distance so that the light source 300 on the opposite side can emit as much light as possible, when a large illumination range is required and the inclination angle of the optical axis 301 relative to the center line is large, a lot of light will still be blocked. The light from the light source 300 includes the blocked light extending below the top edge of the light source mounting base 102 on the opposite side. The portion of the light emitting surface 402 away from the illumination surface 200 refracts the blocked light from the light source 300 and passes over the top edge of the light source mounting base 102 on the opposite side. In this embodiment, the portion of the light emitting surface 402 away from the illumination surface 200 changes the direction of the blocked light through refraction, thereby preventing this part of the light from being blocked and improving the lighting efficiency.

[0045] In order to expand the irradiation range while ensuring the light output efficiency, the angle between the optical axis 301 and the center line 101 is 50°-80°. Further preferably, the angle between the optical axis 301 and the center line 101 is 65°-85°.

[0046] The light rays of the light source 300 pass through the corresponding lens 400, and the light output angle and / or the maximum light output direction will change. Generally, the light output angle will decrease. The maximum light output direction of the light rays of the light source 300 after passing through the corresponding lens 400 is the distribution light axis 403, and the angle between the distribution light axis 403 and the center line 101 is 60°-85°.

[0047] In order to improve the light efficiency, the extension line of the distribution light axis 403 is above the top edge of the light source mounting seat 102 on the opposite side. Further preferably, the angle between the distribution light axis 403 and the center line 101 is 70°-85°.

[0048] In order to improve the light efficiency, in the present embodiment, the light rays of the light source 300 are refracted and distributed on the light entrance surface 401 and the light exit surface 402. The light rays of the light source 300 undergo twice refraction in the lens 400, which is the highest light output efficiency.

[0049] The light exit surface 402 includes a first condensing portion 4021 and a second condensing portion 4022. The first condensing portion 4021 includes the portion of the blocked light rays of the light source 300 that refracts beyond the top edge of the light source mounting seat 102 on the opposite side, located on the side of the distribution light axis 403 away from the irradiation surface 200, and condenses the light rays corresponding to the light source 300 to the distribution light axis 403; the second condensing portion 4022 is located on the side of the distribution light axis 403 close to the irradiation surface 200, and condenses the light rays corresponding to the light source 300 to the distribution light axis 403. Both the first condensing portion 4021 and the second condensing portion 4022 are for converging the light rays to the distribution light axis 403.

[0050] In the present embodiment, in order to distribute the light uniformly, the radii of curvature of the first condensing portion 4021 and the second condensing portion 4022 both change from large to small from the side away from the distribution light axis 403 to the side close to the distribution light axis 403, i.e., the curvature changes from small to large.

[0051] In order to avoid the absence of light rays in the direction perpendicular to the irradiation surface 200 of the light source 300, the light exit surface 402 further includes a diffusion portion 4023 connected to the end of the second condensing portion 4022 away from the distribution light axis 403. The diffusion portion 4023 is arranged in the light output direction perpendicular to the irradiation surface 200 of the light source 300. The connection point of the second condensing portion 4021 and the diffusion portion 4023 is the inflection point of the curve.

[0052] In order to achieve better light distribution uniformity, the light-incoming surface 401 is recessed toward the light-emitting surface 402. The inward recess of the light-incoming surface 401 can pre-process the light and diffuse it compared to a flat surface, so that the light is more uniform when it reaches the light-emitting surface 402.

[0053] The structure of the lens 400 in the vertical direction passing through the center of the light source 300 is the focus of protection of this application, and its changes along the length direction can be selected as needed. In order to facilitate manufacturing and reduce costs, one embodiment is that the lens 400 is a strip lens extending along the length line of the strip light frame 100. The strip lens basically does not distribute light in the length direction. Figure 9 shown.

[0054] In order to improve the light effect, another embodiment is that the light source 300 is a plurality of point light sources spaced apart along the length direction, and the lens 400 is a single lens provided for each point light source. A single lens has a focusing effect in the length direction.

[0055] To achieve energy conservation and environmental protection, in this embodiment, the light source 300 utilizes an LED light source, comprising a circuit board 302 and a plurality of LED chips 303 disposed on the circuit board 301 and spaced apart along its length. The light source mounting base 102 is provided with a mounting slot 1021 for inserting the circuit board 302. When a single lens is used, each lens can be installed individually. However, for ease of manufacturing, multiple lenses are typically integrated onto a mounting plate 404. The back of the mounting plate 404 is provided with a fixing post 405. The circuit board 302 is provided with a fixing hole 304 that mates with the fixing post 405. The fixing post 405 is inserted through the fixing hole 304 and fixed to the back of the circuit board 302 by hot stamping.

[0056] To improve the sealing effect, a lampshade 500 is also provided on the strip light frame 100 and outside the lens 400. Furthermore, end cap assemblies 600 are provided at both ends of the strip light frame 100. The end cap assemblies 600 include an inner cover 601, an outer cover 602, a fixing base 603, and a plug wire 604.

[0057] In order to prevent the light from changing its optical path when passing through the lampshade 500 as much as possible, the lampshade 500 is an arc-shaped surface that bulges outward along the light emitting direction.

[0058] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A strip light, characterized in that: include: The strip-shaped light stand (100) has a center line (101) perpendicular to the irradiation surface (200) in a plane perpendicular to its length direction, and the strip-shaped light stand (100) is provided with two light source mounting seats (102) arranged opposite to each other and located on both sides of the center line (101); Two rows of light sources (300) are respectively arranged on two light source mounting seats (102), with light emitting directions both facing the illumination surface and two optical axes (301) intersecting at or near the center line (101), and the two rows of light sources (300) are symmetrically arranged; Two lenses (400), each disposed on a light source mounting seat (102) and located in the light emitting direction of the corresponding light source (300), each including a light-incoming surface (401) and a light-emitting surface (402); The maximum light-emitting direction of the light from the light source (300) after passing through the corresponding lens (400) is the light distribution axis (403), and the light-emitting surface (402) includes: A first light-concentrating portion (4021), comprising a portion that refracts blocked light from the light source (300) and passes over the top edge of the light source mounting seat (102) on the opposite side, is located on a side of the light distribution axis (403) away from the irradiation surface (200), and concentrates light from the corresponding light source (300) onto the light distribution axis (403); A second light-concentrating portion (4022) is located on a side of the light distribution axis (403) close to the irradiation surface (200), and focuses light from the corresponding light source (300) onto the light distribution axis (403); The angle between the optical axis (301) and the center line (101) is 50° to 80°, the angle between the light distribution axis (403) and the center line (101) is 60° to 85°, and the light distribution axis (403) is located between the top edge of the light source mounting seat (102) on the opposite side and the optical axis (301) on the same side; It also includes a lampshade (500) which is arranged on the strip-shaped lamp frame (100) and is located outside the two lenses (400).

2. The strip light according to claim 1, wherein: The light of the light source (300) includes blocked light extending below the top edge of the light source mounting seat (102) on the opposite side, and the portion of the light emitting surface (402) away from the irradiation surface (200) refracts the blocked light of the light source (300) and passes over the top edge of the light source mounting seat (102) on the opposite side.

3. The strip light according to claim 1, wherein: An extension line of the light distribution axis (403) is located above the top edge of the light source mounting seat (102) on the opposite side.

4. The strip light according to claim 1, wherein: The angle between the light distribution axis (403) and the center line (101) is 70° to 85°.

5. The strip light according to claim 1, wherein: Light from the light source (300) is refracted and distributed on the light-incoming surface (401) and the light-emitting surface (402).

6. The strip light according to claim 5, wherein: The light-emitting surface (402) further comprises a diffusion portion (4023) connected to the end of the second light-collecting portion (4022) away from the light distribution axis (403).

7. The light strip according to claim 1, wherein: The light-incoming surface (401) is recessed toward the light-emitting surface (402).

8. The light strip according to claim 1, wherein: The lens (400) is a strip-shaped lens extending along the length of the strip-shaped light stand (100).

9. The light strip according to claim 1, wherein: The light source (300) is a plurality of point light sources spaced apart along the length direction, and the lens (400) is a single lens provided corresponding to each point light source.

10. The light strip according to claim 1, wherein: The lampshade (500) is an arc-shaped surface that convexly extends along the light emitting direction.

Images