A free-bendable wall washer lamp using an extruded lens

Abstract

The utility model relates to wall washing lamp technical field discloses a kind of free bending wall washing lamps using extrusion lens, including shell, the inside of shell is equipped with circuit board, lens;And the middle part of circuit board is equipped with light source along its length direction;And the bottom of lens both sides is equipped with reflector cup;And the accommodating groove of accommodating light source is formed between reflector cup;And the surface of lens close to light source is outward convexly formed, light emitted by light source is focused to lens by reflector cup again and irradiated outward;By setting circuit board and lens structure in shell interior, flexible installation and efficient optical output are realized;The light source arranged in the middle part of circuit board is located in the accommodating groove between the reflector cup of lens bottom both sides, light emitted by light source is first concentrated by reflector cup, then enters the lens surface outward convexly to carry out secondary refraction and equalization, finally forms uniform, long-range wall washing light effect;Overall structure ensures that lamp body can be bent to adapt to arc or irregular installation environment.

Description

Technical Field

[0001] This utility model relates to the field of wall washer light technology, and specifically to a flexible wall washer light using an extruded lens. Background Technology

[0002] With the continuous development of LED lighting technology, various miniaturized, high-brightness lighting components are widely used in flashlights, decorative light strips, indicator lights, and portable lighting devices. Existing LED light sources typically consist of a circuit board, a light source, and a housing. To improve brightness output, a lens is usually placed outside the light source to focus the light. However, existing structures generally suffer from low light utilization, light leakage, uneven light spots, and unreasonable heat dissipation and wiring. For example, in some products, the lens and light source are not tightly bonded, leading to light scattering and loss; the housing material has high light transmittance, easily forming lateral stray light, affecting the lighting effect. Simultaneously, the lack of effective isolation between the circuit board and the housing may lead to poor circuit contact or short circuit hazards under long-term use or vibration conditions; loose cable routing may also affect the internal space layout and product reliability.

[0003] Furthermore, to improve the optical performance of LED lamps, traditional designs often use ordinary flat lenses, which have limited light focusing capabilities and struggle to maintain uniform light distribution after penetrating the housing material. In terms of control, the control ICs are often centrally located, easily leading to severe localized overheating and affecting the overall lamp lifespan. Existing products still have shortcomings in improving luminous efficacy, strengthening structural protection, and optimizing wiring and heat dissipation. Therefore, it is necessary to provide a new lighting structure with higher luminous efficacy, more concentrated light, more reliable structure, and more standardized wiring to solve the above problems and improve overall performance.

[0004] The technical problem to be solved by this utility model is to provide a wall washer light with high luminous efficiency. Utility Model Content

[0005] The technical problem this utility model aims to solve is to provide a wall washer light with high luminous efficiency. By setting a circuit board and lens inside the housing and arranging the light source along the length of the circuit board, the light source arrangement is made more concentrated and stable. A special receiving groove is provided at the bottom of the lens, which allows the light source and the lens to fit precisely, reducing light scattering and loss. At the same time, the lens adopts an outward convex molding method on the side near the light source, which is equivalent to integrating a micro optical focusing structure, which can effectively improve the refraction and focusing efficiency of light, thereby significantly improving the light output rate and lighting effect of the light source.

[0006] A flexible wall washer light using an extruded lens includes a housing, inside which are a circuit board and a lens; a light source is provided in the middle of the circuit board along its length; reflectors are provided on both sides of the bottom of the lens; and a receiving groove for accommodating the light source is formed between the reflectors; the lens protrudes outward from the side closest to the light source, and the light emitted by the light source is focused by the reflectors onto the lens and then emitted outward; and the lens and the reflectors are integrally extruded.

[0007] Preferably, the side of the outer casing away from the light source is a diffused silicone layer or a transparent silicone layer, thereby allowing light emitted from the light source to pass through.

[0008] Preferably, the lens is a convex lens or a Fresnel lens.

[0009] Preferably, the outer shell is made of light-shielding silicone; and the two sides of the outer shell block the light emitted from the lens, so that the light shines out along the middle position.

[0010] Preferably, the circuit board is provided with a control IC element for controlling the light source; and the control IC element is distributed on both sides of the lens or in the middle of the circuit board.

[0011] Preferably, the circuit board is an FPC board.

[0012] Preferably, the inner bottom of the outer casing is formed with a wire groove; and the wire groove is provided with a cable that is electrically connected to the circuit board.

[0013] Preferably, a PET sheet is also provided between the circuit board and the outer casing.

[0014] Preferably, the light source is a COB light source or an SMD light source.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model adopts a freely bendable wall washer light with an extruded lens. By rationally arranging the circuit board, light source and lens inside the housing, and setting a receiving groove at the bottom of the lens and using a convex lens or Fresnel lens structure, the light emitted by the light source can be efficiently focused, significantly improving the light output rate and illumination brightness. The lens is convex outward and a diffusion or transparent silicone layer is set on the side away from the light source, which further improves the uniformity of light, reduces glare and improves visual comfort.

[0016] Meanwhile, the use of a light-shielding silicone shell effectively blocks lateral and backlight leakage, ensuring light directionality; the control IC is placed on the circuit board and distributed on both sides of the lens, while dispersing heat and improving operational stability and lifespan. An FPC board can be used for the circuit board to adapt to different installation and space requirements.

[0017] In addition, by setting a cable tray at the bottom inside the housing and embedding the cable therein, neat and safe wiring is achieved; a PET sheet is placed between the circuit board and the housing to provide good electrical insulation and mechanical protection, avoiding short circuits or damage, while not affecting heat dissipation and structural compactness.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0020] Figure 1 This is a cross-sectional structural diagram of an embodiment of the present invention using a convex lens.

[0021] Figure 2 This is a cross-sectional structural schematic diagram of an embodiment of the present invention using a Fresnel lens.

[0022] Figure 3 This is a schematic diagram of the structure of the control IC component of this utility model installed at the bottom center.

[0023] Figure 4 This is a schematic diagram of the power supply cable of this utility model, which adopts a side-outlet structure.

[0024] Figure 5 This is a schematic diagram of the power supply cable of this utility model, which adopts a bottom horizontal cable outlet structure.

[0025] Figure 6 This is a schematic diagram of the power supply cable of this utility model, which adopts a straight bottom exit structure.

[0026] Figure 7 This is a schematic diagram of the power supply cable of this utility model, which adopts a structure with straight wires at both ends.

[0027] In the diagram: 1. Outer shell; 2. Circuit board; 3. Reflector cup; 4. Light source; 5. Receiving groove; 6. Diffusion silicone layer; 7. Transparent silicone layer; 8. Convex lens; 9. Fresnel lens; 10. Control IC component; 11. Cable tray; 12. Cable; 13. PET sheet. Detailed Implementation

[0028] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of 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.

[0029] It should be noted that the terms "first," "second," etc., used in this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementation methods described in the following exemplary embodiments do not represent all implementation methods consistent with this disclosure.

[0030] Please see Figures 1-7 In this embodiment of the utility model, a flexible wall washer light using an extruded lens includes a housing 1. The housing 1 is characterized by having a circuit board 2 and a lens inside; a light source 4 is provided in the middle of the circuit board 2 along its length; reflectors 3 are provided on both sides of the bottom of the lens; and a receiving groove 5 for accommodating the light source 4 is formed between the reflectors 3; the lens protrudes outward from the side closest to the light source 4, and the light emitted by the light source 4 is focused by the reflectors 3 onto the lens and then emitted outward; and the lens and the reflectors 3 are integrally extruded.

[0031] Specifically, by setting up a circuit board 2 and a lens structure inside the outer casing 1, flexible installation and efficient optical output are achieved: the light source 4 arranged in the middle of the circuit board 2 is located in the receiving groove 5 between the reflectors on both sides of the bottom of the lens. The light emitted by the light source 4 is first focused by the reflector 3, and then enters the outwardly convex lens surface for secondary refraction and homogenization, ultimately forming a uniform and long-range wall-washing light effect. The overall structure not only ensures that the lamp body can be bent to adapt to curved or irregular installation environments, but also effectively improves the light utilization rate and wall illumination uniformity through the synergistic design of the reflector 3 and the convex lens. The lens and the reflector 3 are integrally extruded, which not only reduces the assembly error and structural complexity of optical components, but also enhances the overall flexibility and reliability, which is conducive to achieving a continuous, uniform and flexible wall-washing lighting effect. After testing, it was found that after changing to a convex lens structure, the minimum lens angle can be about 13°, and the light output efficiency of the finished product reaches 84%.

[0032] Furthermore, the side of the outer casing 1 away from the light source 4 is a diffused silicone layer 6 or a transparent silicone layer 7, thereby allowing light emitted from the light source 4 to pass through.

[0033] Specifically, by setting a diffused silicone layer 6 or a transparent silicone layer 7 on the side of the outer shell 1 away from the light source 4, the light emitted by the light source 4 can pass through smoothly. If a diffused silicone layer 6 is used, the light can be softened and homogenized, avoiding local glare and improving overall visual consistency. If a transparent silicone layer 7 is used, it can provide a certain degree of protection while ensuring high light transmittance, thus combining light emission efficiency and structural protection functions, further optimizing the optical performance and reliability of the lamp.

[0034] Furthermore, the lens is either a convex lens 8 or a Fresnel lens 9.

[0035] Specifically, by designing the lens as a convex lens 8 or a Fresnel lens 9, the optical structure gains stronger light-gathering and shaping capabilities. The convex lens 8 concentrates the light emitted from the light source 4, increasing beam brightness and illumination distance; the Fresnel lens 9, while maintaining similar light-gathering capabilities, significantly reduces thickness and weight, making it more suitable for compact luminaire structures. Both effectively improve luminous efficiency, making the light emitted from the light source 4 more concentrated and efficient, thereby further enhancing overall lighting performance.

[0036] Furthermore, the outer casing 1 is made of light-shielding silicone; and the two sides of the outer casing 1 block the light emitted from the lens, so that the light shines out along the middle position.

[0037] Specifically, by using light-shielding silicone material for the outer shell 1, the shell 1 itself possesses excellent light-shielding properties, effectively blocking stray light from the side or back of the light source 4, preventing light leakage from affecting the lighting effect. At the same time, the light-shielding silicone has flexible, protective, and environmentally resistant properties, providing buffering and protection for the internal circuit board 2 and lens. This not only improves the light directionality and light output efficiency of the lamp, but also enhances the durability and reliability of the overall structure.

[0038] Furthermore, the circuit board 2 is provided with a control IC element 10 for controlling the light source 4; and the control IC element 10 is distributed on both sides of the lens or in the middle of the circuit board 2.

[0039] Specifically, by setting control IC elements 10 for controlling the light source 4 on the circuit board 2, and selectively distributing the control IC elements 10 on both sides of the lens 4 or in the middle of the circuit board 2, the spatial layout of the control unit and the light source becomes more flexible and reasonable. On the one hand, the control ICs can be distributed or concentrated according to the width and bending radius requirements of the lamp body, avoiding the increase in thickness or stress concentration caused by the stacking of local components; on the other hand, it is beneficial to optimize the circuit routing and heat dissipation path, improve control stability and the reliability of the light source, thereby ensuring the free bending performance of the wall washer light while achieving precise control and long-term stable operation of the light source.

[0040] Furthermore, circuit board 2 is an FPC board or an FR4 board.

[0041] Specifically, by designing circuit board 2 as either an FPC board or an FR4 board, the product achieves greater adaptability in terms of structural layout and performance requirements. FPC boards are flexible, bendable, and thin, making them suitable for lighting fixture structures with limited space or requiring bending installation; FR4 boards, on the other hand, offer excellent mechanical strength, stability, and cost advantages, making them more suitable for rigid installation scenarios. The choice between the two board types can be flexibly configured according to application requirements, thereby optimizing and diversifying the overall structural design while maintaining reliable electrical performance.

[0042] Furthermore, a wire groove 11 is formed on the inner bottom of the outer casing 1; and a cable 12 that is electrically connected to the circuit board 2 is provided inside the wire groove 11.

[0043] Specifically, by forming a wire groove 11 at the bottom inside the housing 1, the cable 12 is embedded therein and electrically connected to the circuit board 2. This not only makes the wiring more orderly and reduces the stress, but also effectively prevents the cable 12 from shaking, being squeezed or worn during use, thus improving structural stability. At the same time, the wire groove 11 makes the internal space layout more compact and orderly, which is conducive to improving the overall assemblability and product reliability, and provides a safer and more durable internal wiring solution for the lamp.

[0044] Furthermore, a PET sheet 13 is provided between the circuit board 2 and the outer casing 1.

[0045] Specifically, by setting a PET sheet between the circuit board 2 and the housing 1, the function of the PET sheet is to reduce the problem of thermal expansion and contraction of the sleeve, reduce the pulling of the sleeve on the FPC board under thermal expansion and contraction, and prevent damage to the circuits and pads on the FPC board; it also strengthens the sleeve and prevents the formation of dead corners in the internal FPC board during the bending process, which could damage the pads and the pins of components such as light sources and ICs.

[0046] Furthermore, the light source uses a COB light source or an SMD light source.

[0047] Specifically, either COB or SMD light sources can be used for the wall washer light, giving it greater versatility and flexibility in terms of luminous efficacy and structural adaptability. When using a COB light source, high brightness and good beam uniformity can be achieved through highly integrated light-emitting units, making it suitable for applications requiring high uniformity in wall washing effects. When using an SMD light source, it is advantageous to arrange the light densely or at intervals along the length of the circuit board. Combined with the extruded, one-piece lens and reflector structure, it achieves continuous linear light output and a smaller bending radius, thus balancing brightness, uniformity, and flexible bending performance under different lighting requirements.

[0048] in, Figures 4 to 7The present invention provides four power cable exit methods: side exit, bottom horizontal exit, bottom straight exit, and straight exit at both ends; and the two convex lens embodiments and one Fresnel lens embodiment can all adopt these four power cable exit methods according to requirements.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

Claims

1. A flexible wall washer light employing an extruded lens, comprising a housing (1), characterized in that, The inner part of the outer casing (1) is provided with a circuit board (2) and a lens; and a light source (4) is provided in the middle of the circuit board (2) along its length; and a reflector cup (3) is provided on both sides of the bottom of the lens; and a receiving groove (5) for accommodating the light source (4) is formed between the reflector cups (3); and the lens protrudes outward from the side close to the light source (4), and the light emitted by the light source (4) is focused by the reflector cup (3) onto the lens and then irradiated outward; and the lens and the reflector cup (3) are integrally extruded.

2. A flexible wall washer light employing an extruded lens according to claim 1, characterized in that, The side of the outer shell (1) away from the light source (4) is a diffuse silicone layer (6) or a transparent silicone layer (7), so that the light emitted by the light source (4) can pass through.

3. A flexible wall washer light employing an extruded lens according to claim 1, characterized in that, The lens is a convex lens (8) or a Fresnel lens (9).

4. A flexible wall washer light employing an extruded lens according to claim 1, characterized in that, The outer shell (1) is made of light-shielding silicone; and the two sides of the outer shell (1) block the light emitted from the lens, so that the light shines out along the middle position.

5. A flexible wall washer light employing an extruded lens according to claim 1, characterized in that, The circuit board (2) is provided with a control IC element (10) for controlling the light source (4); and the control IC element (10) is distributed on both sides of the lens or in the middle of the circuit board (2).

6. A flexible wall washer light employing an extruded lens according to claim 1, characterized in that, The circuit board (2) is an FPC board.

7. A flexible wall washer light employing an extruded lens according to claim 1, characterized in that, The inner bottom of the outer casing (1) is formed with a wire groove (11); and the wire groove (11) is provided with a cable (12) that is electrically connected to the circuit board (2).

8. A flexible wall washer light employing an extruded lens according to claim 1, characterized in that, A PET sheet (13) is also provided between the circuit board (2) and the outer casing (1).

9. A flexible wall washer light employing an extruded lens according to claim 1, characterized in that, (4) The light source is a COB light source or an SMD light source.

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