Linear lighting device

Abstract

The utility model provides a linear lighting device which comprises a light mixing piece, a light source module and an optical lens, and the light source module comprises a linear flexible circuit board and a plurality of light-emitting elements arranged on the linear flexible circuit board. The light mixing part wraps the periphery of the light source module and is partially located on light emitting paths of the light emitting elements. The optical lens abuts against the light-emitting face of the light mixing piece and is provided with a transparent lens part, and the lens part is located on a light-emitting light path of the light-emitting face of the light mixing piece so that light emitted by the light-emitting element can be emitted out of the lens part from the light-emitting face of the light mixing piece after being mixed through the light mixing piece. Therefore, the uniformity of light mixing of the emergent light rays of the light source module is improved, the irradiation range of the emergent light rays of the light source module is increased, and the irradiation range of the emergent light rays of the linear lighting device is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of light-emitting devices, and in particular to a linear lighting device. Background Art

[0002] Linear lighting devices can illuminate and decorate houses. As people's living standards improve, linear lighting devices are becoming more and more popular.

[0003] However, the illumination range of the linear lighting device in the related art is relatively small, resulting in a relatively limited illumination range of the linear lighting device. Utility Model Content

[0004] The embodiment of the present invention provides a linear lighting device to improve at least one of the above problems.

[0005] The embodiments of the present invention achieve the above-mentioned objectives through the following technical solutions.

[0006] The utility model provides a linear lighting device, comprising a light mixing element, a light source module, and an optical lens. The light source module comprises a linear flexible circuit board and a plurality of light-emitting elements disposed on the linear flexible circuit board. The light mixing element surrounds the periphery of the light source module and is partially located in the light output path of the plurality of light-emitting elements. The optical lens abuts the light output surface of the light mixing element and comprises a transparent lens portion located in the light output path of the light output surface of the light mixing element, so that light emitted by the light-emitting elements is mixed by the light mixing element and then emitted from the light output surface of the light mixing element through the lens portion.

[0007] In some embodiments, the light mixing element is provided with a first mounting groove and a second mounting groove that are connected to each other, a plurality of light-emitting elements are assembled in the first mounting groove, and a linear flexible circuit board is assembled in the second mounting groove, and the width dimension of the first mounting groove is smaller than the width dimension of the second mounting groove.

[0008] In some embodiments, the optical lens includes a focusing lens, which has a lens portion, and the lens portion of the focusing lens is suitable for focusing the output light of the mixing element and then emitting it outside the focusing lens; or, the optical lens includes a floodlight lens, which has a lens portion, and the lens portion of the floodlight lens is suitable for converging the output light of the mixing element and then diverging it outside the floodlight lens.

[0009] In some embodiments, the focusing lens is a convex lens, a Fresnel lens, or a total internal reflection lens.

[0010] In some embodiments, the beam angle of the focusing lens is 10 degrees to 80 degrees.

[0011] In some embodiments, the flood lens includes a first convex portion and a second convex portion connected to each other, and the first convex portion and the second convex portion are symmetrically distributed about the central axis of the linear lighting device.

[0012] In some embodiments, the plurality of light-emitting elements are spaced apart along the length direction of the linear lighting device, the center distance between any two adjacent light-emitting elements is less than or equal to 20 mm, and the thickness of the light mixing element is greater than or equal to 0.5 mm.

[0013] In some embodiments, the linear lighting device further includes a light shielding member, which is disposed around the outer periphery of the light mixing member and avoids the optical lens.

[0014] In some embodiments, the light mixing element and the optical lens are an integrally formed structure.

[0015] In some embodiments, both the light mixing element and the optical lens are flexible and linearly extended structures.

[0016] In some embodiments, the light source module is detachably assembled to the light mixing element.

[0017] The utility model provides a linear lighting device, wherein a light mixing element of the linear lighting device is coated on the periphery of the light source module and is partially located in the light output path of multiple light-emitting elements. This helps to improve the uniformity of light mixing of the light output from the light source module. The optical lens abuts the light output surface of the light mixing element. The optical lens has a transparent lens portion, which is located in the light output path of the light output surface of the light mixing element so that the light emitted by the light-emitting element is mixed by the light mixing element and then emitted from the light output surface of the light mixing element through the lens portion. This helps to increase the central light intensity of the light output from the light mixing element, helps to increase the irradiation range of the light output from the light source module, and thus helps to increase the irradiation range of the light output from the linear lighting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic structural diagram of a linear lighting device provided in an embodiment of the present utility model is shown.

[0020] Figure 2 Shown Figure 1 Schematic diagram of the structure of the linear lighting device from another perspective.

[0021] Figure 3 Shown Figure 1A longitudinal cross-sectional schematic diagram of a linear lighting device.

[0022] Figure 4 A schematic structural diagram of a linear lighting device provided in another embodiment of the present invention is shown.

[0023] Figure 5 Shown Figure 4 Schematic diagram of the structure of the linear lighting device from another perspective.

[0024] Figure 6 A schematic structural diagram of a linear lighting device provided in yet another embodiment of the present invention is shown.

[0025] Figure 7 Shown Figure 4 Schematic diagram of the structure of the linear lighting device from another perspective.

[0026] Figure 8 A schematic structural diagram of a linear lighting device provided in yet another embodiment of the present invention is shown.

[0027] Figure 9 Shown Figure 8 Schematic diagram of the structure of the linear lighting device from another perspective.

[0028] Figure 10 Shown Figure 1 A comparison diagram of light spots with a beam angle of 10 degrees between a linear lighting device with a light mixing element and a linear lighting device without a light mixing element.

[0029] Figure 11 Shown Figure 1 A comparison diagram of light spots with a beam angle of 45 degrees between a linear lighting device with a light mixing element and a linear lighting device without a light mixing element. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the present invention.

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] The linear lighting device of the related art is only provided with a focusing lens to redistribute the light intensity of the light emitted by the light-emitting element, but there is a problem of insufficient light mixing effect; some linear lighting devices are only provided with a light mixing component, which can only achieve light mixing but cannot achieve the effect of redistributing light intensity such as focusing.

[0033] Please also refer to Figures 1 to 2 The present invention provides a linear lighting device 100, which can be a light strip, a wall washer, etc. The linear lighting device 100 includes a light mixer 11, a light source module 12, and an optical lens 13. The light source module 12 includes a linear flexible circuit board 122 and a plurality of light-emitting elements 121 arranged on the linear flexible circuit board 122. The light mixer 11 is coated on the outer periphery of the light source module 12 and is partially located in the light output path of the plurality of light-emitting elements 121, which helps to improve the uniformity of light mixing of the light output from the light source module 12. The optical lens 13 is in contact with the light output surface 113 of the light mixer 11. The optical lens 13 has a transparent lens portion 133. The lens portion 133 is located in the light output path of the light output surface 113 of the light mixer 11, so that the light emitted by the light-emitting element 121 is mixed by the light mixer 11 and then emitted from the lens portion 133 from the light output surface 113 of the light mixer 11.

[0034] In this manner, the optical lens 13 is adapted to converge the light emitted from the light mixing element 11 and emit it outward from the lens portion 133, thereby increasing the central light intensity of the light emitted from the light mixing element 11, thereby increasing the illumination range of the light emitted from the light source module 12, and thus increasing the illumination range of the light emitted from the linear lighting device 100. Furthermore, the light mixing element 11 encasing the light source module 12 also makes the structure of the linear lighting device 100 simpler and more compact, making the linear lighting device 100 thinner and lighter.

[0035] The dotted line with an arrow in the figure represents the outgoing light of the linear lighting device 100 .

[0036] Please also refer to Figure 2 and Figure 3 In some embodiments, the light mixing element 11 is provided with a first mounting groove 111 and a second mounting groove 112 which are connected to each other, a plurality of light-emitting elements 121 are assembled in the first mounting groove 111, and a linear flexible circuit board 122 is assembled in the second mounting groove 112, and a width dimension b of the first mounting groove 111 is smaller than a width dimension c of the second mounting groove 112.

[0037] In this way, it helps to ensure that the first mounting groove 111 can adapt to the width of the light-emitting element 121, so that the light mixing element 11 can better cover the periphery of the multiple light-emitting elements 121, which helps to reduce light leakage from the light-emitting element 121, thereby helping to improve the utilization rate of the output light of the light-emitting element 121 and help reduce the loss of light energy.

[0038] In some embodiments, as Figure 2 As shown, the optical lens 13 includes a condenser lens 131 . The condenser lens 131 has a lens portion 133 . The lens portion 133 of the condenser lens 131 is adapted to focus the light emitted from the light mixing element 11 and emit the light out of the condenser lens 131 .

[0039] This helps converge the light emitted from the light mixing element 11, increases the central light intensity of the light emitted from the light mixing element 11, and increases the irradiation range of the light emitted from the light mixing element 11. When the optical lens 13 includes a condenser lens 131, the linear lighting device 100 is a single-sided lighting device.

[0040] In some embodiments, as Figure 4 and Figure 5 As shown, the optical lens 13 includes a floodlight lens 132 . The floodlight lens 132 has a lens portion 133 . The lens portion 133 of the floodlight lens 132 is adapted to converge the outgoing light from the light mixing element 11 and then diverge it outside the floodlight lens 132 .

[0041] This helps achieve divergence of the light emitted from the light mixing element 11 after convergence, helps increase the light intensity of the light emitted from the light mixing element 11 at large angles, and helps increase the illumination range of the light emitted from the light mixing element 11. When the optical lens 13 includes the floodlight lens 132, the linear lighting device 100 is a double-sided lighting device.

[0042] In some embodiments, the light mixer 11 can be made of milky white translucent silicone, which helps the light mixer 11 better diverge the light emitted by the light source module 12, thereby better mixing the emitted light and improving the uniformity of the light mixing of the light mixer 11, thereby helping to reduce glare generated by the linear lighting device 100. The optical lens 13 can be made of transparent silicone, which helps the optical lens 13 effectively transmit light to the location where it is illuminated, thereby improving the light extraction efficiency of the optical lens 13.

[0043] In addition, the light mixing element 11 is made of milky white translucent silicone and the optical lens 13 is made of transparent silicone, which also helps to facilitate the extrusion molding of the light mixing element 11 and the optical lens 13 and facilitates the manufacture of the light mixing element 11 and the optical lens 13.

[0044] In some embodiments, the light mixing element 11 and the optical lens 13 are integrally formed. This helps reduce the possibility of improper connection between the light mixing element 11 and the optical lens 13, reduces light leakage from the linear lighting device 100, reduces the number of components of the linear lighting device 100, and facilitates the manufacture and assembly of the linear lighting device 100.

[0045] In other embodiments, the light mixing element 11 and the optical lens 13 may also be formed separately and then bonded together, and the specific configuration may be based on actual conditions.

[0046] In some embodiments, both the light mixing element 11 and the optical lens 13 are flexible and linearly extendable. This helps the light mixing element 11 and the optical lens 13 better adapt to thermal expansion and contraction, helps reduce the impact of heat generated by the light-emitting element 121 on the light mixing element 11 and the optical lens 13, and helps improve the adaptability and flexibility of the light mixing element 11 and the optical lens 13, allowing the light mixing element 11 and the optical lens 13 to adapt to different installation environments and space requirements.

[0047] In some embodiments, the light source module 12 is detachably mounted to the light mixing element 11. This facilitates assembly and disassembly of the light source module 12, and facilitates repair and replacement of the light source module 12. If the light source module 12 is damaged, it can be removed from the light mixing element 11 for replacement, eliminating the need to repair the entire linear lighting device 100. This improves repair efficiency and reduces repair costs.

[0048] The light source module 12 can be detachably connected to the light mixing element 11 by means of snap connection, fastener connection, etc., and the specific configuration can be made according to actual conditions.

[0049] In some embodiments, the focusing lens 131 is a convex lens 1311 , a Fresnel lens 1312 , or a total internal reflection lens 1313 .

[0050] Exemplarily, the focusing lens 131 may be a convex lens 1311, such as Figure 1 and Figure 2 As shown. The convex lens 1311 can focus the light emitted from the light mixing element 11 and emit it outside the condenser lens 131, which helps to increase the central light intensity of the light emitted from the light mixing element 11 and helps to expand the illumination range of the light emitted from the light mixing element 11. The simple structure of the convex lens 1311 helps facilitate manufacturing and help save manufacturing costs.

[0051] For another example, the focusing lens 131 may be a Fresnel lens 1312, such as Figure 6 and Figure 7 As shown in FIG. The Fresnel lens 1312 can focus the light emitted from the light mixing element 11 and emit it out of the condenser lens 131, thereby increasing the central light intensity of the light emitted from the light mixing element 11 and broadening the illumination range of the light emitted from the light mixing element 11. The simple, lightweight structure of the Fresnel lens 1312 helps reduce the thickness of the condenser lens 131 and save manufacturing costs.

[0052] For another example, the focusing lens 131 may be a total internal reflection lens 1313, such as Figure 8 and Figure 9 As shown in FIG. The total internal reflection lens 1313 can focus the light emitted from the light mixing element 11 and emit it outside the condenser lens 131, thereby increasing the central light intensity of the light emitted from the light mixing element 11 and broadening the illumination range of the light emitted from the light mixing element 11. The total internal reflection lens 1313 has a high light energy utilization rate, which helps reduce light energy loss, thereby improving the light extraction efficiency of the condenser lens 131.

[0053] Among them, textures can be added to the upper surface of the total internal reflection lens 1313, so that when the outgoing light of the mixing component 11 is focused by the total internal reflection lens 1313, the outgoing light can also be mixed by the textures on the upper surface, which helps to improve the mixing effect of the outgoing light of the mixing component 11 and helps to improve the uniformity of the outgoing light.

[0054] In some embodiments, the beam angle of the condenser lens 131 is 10 to 80 degrees. This helps ensure that the beam angle of the condenser lens 131 is within an appropriate angle range, helps ensure uniform mixing of the light emitted by the condenser lens 131, and helps reduce the situation where the light emitted by the condenser lens 131 is excessively concentrated, thereby causing severe light splitting.

[0055] Exemplarily, the beam angle of the focusing lens 131 can be 10 degrees, 20 degrees, 25 degrees, 30 degrees, 40 degrees, 50 degrees, 55 degrees, 60 degrees, 70 degrees, 80 degrees or any value between two adjacent values ​​mentioned above, and can be set according to actual conditions.

[0056] In this way, the light emitted from the light source module 12 can be mixed by the light mixing element 11 and then focused by the focusing lens 131 to be emitted at a certain beam angle, which helps to achieve more uniform light mixing and also helps to improve the light mixing effect of the light spot of the emitted light.

[0057] in, Figure 10 When the beam angle of the condenser lens 131 is 10 degrees, a comparison of the light spots of the linear lighting device 100 with the light mixing element 11 (left) and without the light mixing element 11 (right) is shown. As can be seen from the figure, the light mixing element 11 helps improve the uniformity of light mixing of the light emitted by the light source module 12, thereby enhancing the light mixing effect of the light spot of the emitted light.

[0058] Figure 11 When the beam angle of the condenser lens 131 is 45 degrees, a comparison of the light spots of the linear lighting device 100 with the light mixing element 11 (left) and without the light mixing element 11 (right) is shown. As can be seen from the figure, the light mixing element 11 helps improve the uniformity of light mixing of the light emitted by the light source module 12, thereby enhancing the light mixing effect of the light spot of the emitted light.

[0059] See Figure 4 and Figure 5 In some embodiments, the floodlight lens 132 includes a first convex portion 1321 and a second convex portion 1322 connected to each other, and the first convex portion 1321 and the second convex portion 1322 are symmetrically distributed about the central axis of the linear lighting device 100 .

[0060] In this way, when the light mixing element 11 scatters the outgoing light of the light source module 12 and then guides it to the floodlight lens 132, the first protrusion 1321 and the second protrusion 1322 can respectively converge the outgoing light of the light mixing element 11 and then diverge it to the outside of the floodlight lens 132, which helps to improve the uniformity of light mixing of the light mixing element 11 and also helps to increase the irradiation range of the outgoing light of the light mixing element 11.

[0061] In some embodiments, the plurality of light emitting elements 121 are spaced apart along the length direction of the linear lighting device 100 , and the center distance a between any two adjacent light emitting elements 121 is less than or equal to 20 mm.

[0062] In this way, it helps to ensure that the multiple light-emitting elements 121 have appropriate spacing, helps to ensure that the multiple light-emitting elements 121 are reasonably arranged in the light-mixing element 11, helps to reduce the situation where the multiple light-emitting elements 121 have too large spacing, causing the output light of the multiple light-emitting elements 121 to be too dispersed, helps the light-mixing element 11 to better mix the output light of the multiple light-emitting elements 121, and helps to improve the uniformity of the mixing of the output light of the multiple light-emitting elements 121.

[0063] For example, the center distance a between any two adjacent light emitting elements 121 may be 5 mm, 8 mm, 10 mm, 12.5 mm, 15 mm, 17 mm, 18.5 mm, 20 mm or other values, and may be set according to actual conditions.

[0064] In this way, the light mixing element 11 can better mix the light emitted by the plurality of light emitting elements 121 , thereby improving the uniformity of the light mixing of the light emitted by the plurality of light emitting elements 121 .

[0065] In some embodiments, the thickness dimension d of the light mixing element 11 is greater than or equal to 0.5 mm. This helps ensure that the light mixing element 11 has an appropriate thickness dimension, helps ensure the light mixing effect of the light mixing element 11 on the light emitted by the multiple light-emitting elements 121, thereby helping to improve the uniformity of the light mixing of the light emitted by the multiple light-emitting elements 121, and also helps to reduce the situation where the thickness dimension d of the light mixing element 11 is too small, resulting in insufficient light mixing of the light emitted by the multiple light-emitting elements 121 by the light mixing element 11.

[0066] Illustratively, the thickness d of the light mixing element 11 may be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm or other values, and may be set according to actual conditions.

[0067] This helps ensure the light mixing effect of the light mixing element 11 on the light emitted from the multiple light emitting elements 121 , and helps improve the uniformity of the light mixing of the light emitted from the multiple light emitting elements 121 .

[0068] Re-read Figure 1 In some embodiments, the linear lighting device 100 may further include a light shielding member 14 , which is disposed around the outer periphery of the light mixing member 11 and avoids the optical lens 13 .

[0069] This helps reduce the leakage of the output light of the light-emitting element 121 from the side of the light-mixing element 11, thereby helping to improve the utilization rate of the output light of the light-emitting element 121, helping to reduce the loss of light energy, and also helping to reduce the situation where the shading element 14 blocks the optical lens 13, resulting in the output light of the optical lens 13 being unable to be emitted.

[0070] Furthermore, the light shielding member 14 can also provide some protection for the light mixing member 11, helping to reduce damage to the light mixing member 11 from collisions. The light shielding member 14 can be filled with light-shielding powder to render it opaque. The light shielding member 14 can be made of silicone, rubber, or other materials to better protect the light mixing member 11.

[0071] In summary, the linear lighting device 100 provided by the present invention has a light mixing element 11 that wraps around the periphery of the light source module 12 and is partially located in the light output path of multiple light-emitting elements 121. This helps improve the uniformity of light mixing of the light output from the light source module 12. The optical lens 13 abuts the light output surface 113 of the light mixing element 11. The optical lens 13 has a transparent lens portion 133. The lens portion 133 is located in the light output path of the light output surface 113 of the light mixing element 11, so that the light emitted by the light-emitting element 121 is mixed by the light mixing element 11 and then emitted from the lens portion 133 from the light output surface 113 of the light mixing element 11. This helps increase the central light intensity of the light output from the light mixing element, helps increase the irradiation range of the light output from the light source module 12, and thus helps increase the irradiation range of the light output from the linear lighting device 100.

[0072] In addition, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as a specific reference or special structure. The description of the term "some embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present invention and the features of the different embodiments or examples, unless they are contradictory.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A linear lighting device, characterized in that: include: A light source module, comprising a linear flexible circuit board and a plurality of light-emitting elements disposed on the linear flexible circuit board; A light mixing element, which is coated on the periphery of the light source module and is partially located in the light output path of the plurality of light-emitting elements; as well as An optical lens is in contact with the light-emitting surface of the light-mixing component. The optical lens has a transparent lens portion. The lens portion is located in the light-emitting path of the light-emitting surface of the light-mixing component, so that the light emitted by the light-emitting element is mixed by the light-mixing component and then emitted from the lens portion from the light-emitting surface of the light-mixing component.

2. The linear lighting device according to claim 1, characterized in that The light mixing component is provided with a first mounting groove and a second mounting groove connected to each other, the plurality of light-emitting elements are assembled in the first mounting groove, the linear flexible circuit board is assembled in the second mounting groove, and the width dimension of the first mounting groove is smaller than the width dimension of the second mounting groove.

3. The linear lighting device according to claim 1, characterized in that The optical lens includes a condenser lens having the lens portion, and the lens portion of the condenser lens is adapted to focus the outgoing light from the light mixing element and then emit the light out of the condenser lens; Alternatively, the optical lens includes a floodlight lens having the lens portion, and the lens portion of the floodlight lens is suitable for converging the outgoing light of the light mixing element and then diverging it outside the floodlight lens.

4. The linear lighting device according to claim 3, characterized in that: The beam angle of the condenser lens is 10 degrees to 80 degrees.

5. The linear lighting device according to claim 3, characterized in that: The floodlight lens includes a first convex portion and a second convex portion connected to each other, and the first convex portion and the second convex portion are symmetrically distributed about the central axis of the linear lighting device.

6. The linear lighting device according to claim 1, characterized in that: The plurality of light-emitting elements are spaced apart along the length direction of the linear lighting device, the center distance between any two adjacent light-emitting elements is less than or equal to 20 mm, and the thickness of the light mixing element is greater than or equal to 0.5 mm.

7. The linear lighting device according to claim 1, characterized in that The linear lighting device further includes a light shielding member, which is arranged around the outer periphery of the light mixing member and avoids the optical lens.

8. The linear lighting device according to any one of claims 1 to 7, characterized in that: The light mixing element and the optical lens are an integrally formed structure.

9. The linear lighting device according to claim 8, characterized in that: The light mixing element and the optical lens are both flexible and linearly extended structures.

10. The linear lighting device according to claim 8, characterized in that: The light source module is detachably assembled on the light mixing element.

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