Flexible linear light bar and flexible linear light device
Patent Information
- Application Number
- CN202522317466.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-31
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-10-31
AI Technical Summary
相关技术中，线型投光灯条为每一颗或若干颗灯珠设置一个刚性的透镜，对出光角度进行调制；但刚性透镜的设置必然会使得线型投光灯条难以弯曲
[0005] The flexible lens has a first refractive surface and a second refractive surface, thus it can modulate the emitted light from the LED chips to achieve a wide-angle light emission. Simultaneously, the lens is flexible and can be bent; the flexible circuit board is also flexible and can be bent as well. In this way, the flexible linear floodlight strip can be bent as a whole.
Smart Images
Figure CN224756818U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lighting device technology, and in particular to a flexible linear floodlight strip and a flexible linear floodlight device. Background Technology
[0002] Linear floodlights may be used as wall washer lights or ambient lights. Therefore, on the one hand, linear floodlights require a wide beam angle, which necessitates modulating the beam angle of the LEDs to achieve a wider beam angle. On the other hand, linear floodlights need to be flexible to suit specific installation scenarios or for easy transportation. In related technologies, linear floodlights use a rigid lens for each or several LEDs to modulate the beam angle; however, the rigid lens design inevitably makes the linear floodlights difficult to bend. Utility Model Content
[0003] The main purpose of this invention is to propose a flexible linear floodlight strip and a flexible linear floodlight device, which aims to improve the bending angle of the flexible floodlight.
[0004] To achieve the above objectives, this utility model proposes a flexible linear floodlight strip, comprising a flexible lens, a flexible circuit board, and LEDs. The flexible lens is strip-shaped and has an internal accommodating cavity; the accommodating cavity is strip-shaped and distributed along the length of the flexible lens. The flexible circuit board is disposed within the accommodating cavity; the flexible circuit board is strip-shaped and distributed along the length of the flexible lens; the flexible circuit board is connected to the flexible lens. Multiple LEDs are disposed on the side of the flexible circuit board facing away from the flexible lens; the multiple LEDs are distributed along the length of the flexible lens. The flexible lens includes a first refractive surface and a second refractive surface. The first refractive surface is located within the accommodating cavity and is positioned opposite and spaced apart from the LEDs; the second refractive surface is located on the surface of the flexible lens facing away from the accommodating cavity and is correspondingly positioned to the first refractive surface.
[0005] The flexible lens has a first refractive surface and a second refractive surface, thus it can modulate the emitted light from the LED chips to achieve a wide-angle light emission. Simultaneously, the lens is flexible and can be bent; the flexible circuit board is also flexible and can be bent as well. In this way, the flexible linear floodlight strip can be bent as a whole.
[0006] Because the flexible circuit board is placed inside and connected to the flexible lens, it can bend along with the flexible lens, ensuring a stable positional relationship between the LED and the first refractive surface. This allows the flexible lens to stably modulate the emitted light from the LED.
[0007] As can be seen from the above technical solution, a stable light emission angle modulation of the LED chips can be achieved without the need for a rigid lens, ensuring a large light emission angle. The absence of a rigid lens limitation allows the flexible linear floodlight strip to have a greater bending angle.
[0008] In some embodiments, the flexible lens includes a body and a first latching portion; the first latching portion is disposed on the side of the body facing the receiving cavity; the first latching portion engages with the side of the flexible circuit board facing away from the lamp bead; the first latching portion also engages with at least a portion of two opposite sides of the flexible circuit board and / or at least a portion of the side of the flexible circuit board where the lamp bead is located.
[0009] In some embodiments, the flexible lens includes a main body and a second latching portion; the second latching portion is disposed on the outer side of the main body facing away from the receiving cavity; the second latching portion is distributed along the length direction of the flexible lens.
[0010] In some embodiments, the flexible lens is a fog lens.
[0011] In some embodiments, the first refractive surface and / or the second refractive surface are freeform surfaces; and / or the flexible lens is an extruded part.
[0012] In some embodiments, the light emitted from the lamp bead is directly incident on the second refractive surface; the light from the lamp bead incident on the first refractive surface is directly emitted after passing through the flexible lens to form projected light.
[0013] This utility model also proposes a flexible linear floodlight device, including the aforementioned flexible linear floodlight strip and a housing; the housing is strip-shaped and distributed along the length direction of the flexible lens; the housing is connected to the flexible lens on the side of the flexible lens facing away from the second refractive surface.
[0014] This invention also proposes another flexible linear projection device, comprising a rigid housing, a flexible lamp panel, a flexible refracting mirror, and a flexible diffuser. The rigid housing is strip-shaped and has receiving grooves distributed along its length. The flexible lamp panel is strip-shaped and installed within the receiving grooves along the length of the rigid housing. The flexible refracting mirror is strip-shaped and disposed on the side of the flexible lamp panel facing away from the rigid housing, and installed within the receiving grooves along the length of the rigid housing. The flexible diffuser is strip-shaped and covers the opening of the receiving grooves, and is disposed on the side of the flexible refracting mirror facing away from the flexible lamp panel. The flexible lamp panel, the flexible refracting mirror, and the flexible diffuser are all connected to the rigid housing.
[0015] In some embodiments, the rigid outer shell includes a main shell portion that is strip-shaped and a third snap-fit portion; the third snap-fit portion is disposed on the main shell portion and located on both sides of the receiving groove; the flexible diffuser includes a main cover portion that is strip-shaped and a fourth snap-fit portion; the fourth snap-fit portion is disposed on both sides of the main cover portion; the third snap-fit portion engages with the fourth snap-fit portion; and / or The rigid outer shell includes a main shell portion that is strip-shaped and a limiting rib; the limiting rib is disposed within the receiving groove and cooperates with the bottom surface of the flexible refracting mirror facing the flexible lamp plate and the side surface of the flexible refracting mirror; and / or The side of the flexible lamp panel facing away from the flexible refracting mirror is bonded to the bottom of the receiving groove; and / or The flexible refracting mirror is a cylindrical peanut-shaped lens.
[0016] In some embodiments, the thickness of the flexible diffusion shroud is greater than or equal to 1 mm and less than or equal to 2 mm. Attached Figure Description
[0017] 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 the structures shown in these drawings without creative effort.
[0018] Figure 1 An exploded structural diagram of the first embodiment of the flexible linear floodlight bar provided by this utility model; Figure 2 A side view of the first embodiment of the flexible linear floodlight strip provided by this utility model; Figure 3 An exploded structural diagram of the first embodiment of the flexible linear projection device provided by this utility model; Figure 4 A side view of the first embodiment of the flexible linear projection device provided by this utility model; Figure 5 An exploded structural diagram of the second embodiment of the flexible linear projection device provided by this utility model; Figure 6 A cross-sectional structural schematic diagram of the second embodiment of the flexible linear projection device provided by this utility model; Figure 7 The first embodiment of the flexible linear floodlight bar provided by this utility model and the light distribution curve of ordinary LED beads are shown.
[0019] Explanation of icon numbers: Flexible linear projection device 100; Casing 20; Flexible linear floodlight strip 10; flexible lens 11; main body 111; first snap-fit part 112; second snap-fit part 113; slot 113a; accommodating cavity 11a; first refractive surface 11b; second refractive surface 11c; Flexible circuit board 12; 13 LED beads; Flexible linear projection device 200; Rigid outer shell 210; receiving groove 211; main shell part 212; third snap-fit part 213; limiting rib 214; Flexible light panel 220; Flexible refracting mirror 230; Flexible diffuser hood 240; main hood 241; fourth snap-fit hood 242.
[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the implementation methods and with reference to the accompanying drawings. Detailed Implementation
[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.
[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0024] This utility model proposes a flexible linear floodlight strip.
[0025] Please refer to Figure 1 and Figure 2 The flexible linear floodlight strip 10 proposed in this utility model includes a flexible lens 11, a flexible circuit board 12, and LED beads 13. The flexible lens 11 is strip-shaped and has an internal accommodating cavity 11a; the accommodating cavity 11a is strip-shaped and distributed along the length direction of the flexible lens 11. The flexible circuit board 12 is disposed within the accommodating cavity 11a; the flexible circuit board 12 is strip-shaped and distributed along the length direction of the flexible lens 11; the flexible circuit board 12 is connected to the flexible lens 11. Multiple LED beads 13 are disposed on the side of the flexible circuit board 12 facing away from the flexible lens 11; the multiple LED beads 13 are distributed along the length direction of the flexible lens 11. The flexible lens 11 includes a first refractive surface 11b and a second refractive surface 11c. The first refractive surface 11b is within the accommodating cavity 11a and is opposite to and spaced apart from the LED beads 13; the second refractive surface 11c is on the surface of the flexible lens 11 facing away from the accommodating cavity 11a and is correspondingly disposed to the first refractive surface 11b.
[0026] The flexible lens 11 is a lens that can be bent under external force without breaking or cracking. It can be made of materials such as liquid silicone or flexible acrylic. The flexible lens 11 is a refractive lens, that is, a lens that modulates the light path by refraction. In one example, the flexible lens 11 is made by precision extrusion of liquid silicone with a refractive index of 1.41-1.43. In this way, the flexible lens 11 retains the inherent flexibility of silicone material (Shore hardness 30A~60A) and can achieve professional-grade secondary light distribution function through a precisely designed freeform surface (see the embodiment below). At least one of the first refractive surface 11b and the second refractive surface 11c of the flexible lens 11 can have optical function, that is, when light passes through the refractive surface, the propagation direction changes and is modulated.
[0027] The flexible lens 11 has a receiving cavity 11a inside, meaning that the receiving cavity 11a is at least partially and completely covered by the flexible lens 11 in the radial direction; conversely, the receiving cavity 11a can be exposed outside the flexible lens 11 in the axial (length direction) direction. For an example, please refer to... Figure 2 As can be seen in the side view, the accommodating cavity 11a is exposed, therefore in Figure 2 In the embodiment shown, the accommodating cavity 11a extends through the entire flexible lens 11 along its length and is exposed at the end of the flexible lens 11, but at the same time, the entire accommodating cavity 11a is covered by the flexible lens 11 in the radial direction of the flexible lens 11.
[0028] If the accommodating cavity 11a is distributed along the length direction of the flexible lens 11, then the length direction of the accommodating cavity 11a is parallel to the length direction of the flexible lens 11. The accommodating cavity 11a can penetrate the flexible lens 11 along its length direction, so that both ends of the accommodating cavity 11a are exposed to the flexible lens 11. However, it can also be that only one end is exposed, or neither end is exposed to the flexible lens 11. That is, the accommodating cavity 11a can be completely embedded in the flexible lens 11.
[0029] The flexible circuit board 12 is a circuit board that can be deformed under external force without breaking or cracking after deformation. The circuit on the flexible circuit board 12 can be used to power the LED bead 13 and / or control the light emission state (color or brightness, etc.) of the LED bead 13.
[0030] The flexible circuit board 12 is firstly plate-shaped and also strip-shaped, so that the flexible circuit board 12 can be placed in the accommodating cavity 11a, and the length direction of the flexible circuit board 12 is parallel to the length direction of the flexible lens 11.
[0031] The connection between the flexible circuit board 12 and the flexible lens 11 refers to a mechanical connection. Referring to the following text, the flexible circuit board 12 and the flexible lens 11 can be connected by a snap-fit structure, so that the flexible circuit board 12 and the flexible lens 11 deform together. Since the lamp bead 13 is set on the flexible circuit board 12, the positional relationship between the lamp bead 13 and the flexible lens 11 is relatively stable during the deformation process. That is, the correspondence between the lamp bead 13 and the second refractive surface 11c is stable. The flexible lens 11 can stably modulate the emitted light of the lamp bead 13, that is, perform secondary light distribution, and realize a large light emission angle of the flexible linear floodlight strip 10.
[0032] Regarding the light emission angle, please refer to... Figure 7 , Figure 7 The curve located on the inner side (data points are circular) is the subject of this application. Figure 1 The light distribution curve shown in the embodiment is along its own length direction, while the curve on the outer side (data points are square) is the one of this application. Figure 1 The light distribution curve of the embodiment shown is along its length perpendicular to itself. It can be seen that, in the direction perpendicular to its length, the half-intensity angle of this embodiment is approximately 140°. The flexible lens 11 effectively expands the light emission angle, and the light intensity is relatively uniform within the half-intensity angle. Figure 7 As can be seen, the light intensity is approximately 500 cd within a 100° range.
[0033] Lamp 13 can be an LED (Light-Emitting Diode).
[0034] There are multiple LED beads 13. When the LED beads 13 are LEDs, different LED beads 13 can be used to emit the same color or different colors. When the LED beads 13 are used to emit different colors, they can include LEDs for emitting red, green, and blue, or LEDs for emitting, for example, white or amber. In this way, the flexible linear floodlight strip 10 can achieve colored light output. The LED beads 13 used to emit different colors can also be arranged alternately, so the light output color is adjustable (changing the intensity of different colors of light output changes the overall light output color).
[0035] The LED 13 is positioned on the side facing away from the flexible lens 11, so that the LED 13 is opposite to the first refractive surface 11b of the flexible lens 11 located within the accommodating cavity 11a. The unoccupied space between the first refractive surface 11b and the LED 13 within the accommodating cavity 11a can be air. Thus, the light emitted from the LED 13 enters the flexible lens 11 after incident on the first refractive surface 11b, and the direction of light propagation can be modulated. The second refractive surface 11c is located on the outer surface of the flexible lens 11 and is often also in a gaseous environment. The light from the LED 13 enters the flexible lens 11 after incident on the second refractive surface 11c, and the direction of light propagation can also be modulated.
[0036] The first refractive surface 11b and / or the second refractive surface 11c can be cylindrical surfaces with their axes distributed along the length of the flexible lens 11. In this embodiment, the cross-section of the first refractive surface 11b and / or the second refractive surface 11c on a cross-section perpendicular to the length of the flexible lens 11 is an arc.
[0037] The LED beads 13 can be distributed along the length of the flexible lens 11 such that the line connecting the centers of any two adjacent LED beads 13 is parallel to the length of the flexible lens 11. However, as in some embodiments described above, the LED beads 13 can be distributed in groups, with each group containing multiple LED beads 13. The LED beads 13 within a group can be distributed along a direction perpendicular to the length of the flexible lens 11. In such embodiments, the distribution of the LED beads 13 along the length of the flexible lens 11 means that the line connecting the centers of adjacent groups is parallel to the length of the flexible lens 11.
[0038] As can be seen, the flexible lens 11 can deform freely, and the LED beads 13 mounted on the flexible circuit board 12, due to the connection between the flexible circuit board 12 and the flexible lens 11, can also deform along with the flexible lens 11, thereby obtaining the stable light path modulation effect of the flexible lens 11. In this process, there is no need to provide a rigid lens for the LED beads 13, allowing the flexible linear floodlight strip 10 to have a larger bending angle; for Figure 1 The embodiment shown, through actual measurement, found that the minimum bending radius can be less than or equal to 3cm, and at the same time, it can achieve an ultra-wide-angle light output of 140°~150°, with uniformity greater than 90% (edge to center illuminance ratio greater than 0.8).
[0039] Please refer to Figure 1 and Figure 2 In some embodiments, the flexible lens 11 includes a main body 111 and a first latching portion 112; the first latching portion 112 is disposed on the side of the main body 111 facing the receiving cavity 11a; the first latching portion 112 engages with the side of the flexible circuit board 12 facing away from the lamp bead 13; the first latching portion 112 also engages with at least a portion of the two opposite sides of the flexible circuit board 12 and / or at least a portion of the side of the flexible circuit board 12 where the lamp bead 13 is located.
[0040] The main body 111 is the main part of the flexible lens 11, specifically the part of the flexible lens 11 used for optical path modulation. It may include a first refractive surface 11b, a second refractive surface 11c, and a portion between the first and second refractive surfaces 11b for light to pass through. The first latching part 112 is used to fix the flexible circuit board 12; please refer to... Figure 2 ,exist Figure 2 In the embodiment shown, the flexible lens 11 is connected to the flexible circuit board 12 only through the first snap-fit part 112. In other embodiments, the first snap-fit part 112 may also be connected with other connection structures, such as the fasteners mentioned above.
[0041] The first latching part 112 engages with the side of the flexible circuit board 12 facing away from the LED bead 13, meaning that the first latching part 112 can be used to abut against the side of the flexible circuit board 12 facing away from the LED bead 13. Please refer to [link / reference]. Figure 2 ,exist Figure 2 In the illustrated embodiment, the side of the flexible circuit board 12 facing away from the LED bead 13 abuts against the first snap-fit portion 112; if it is considered Figure 2 In the state shown, a top wall of a flexible lens 11 is formed between the second refractive surface 11c and the first refractive surface 11b, and the first snap-fit part 112 can form the bottom wall of the flexible lens 11, so that it can be used to abut against the side of the flexible circuit board 12 facing away from the lamp bead 13.
[0042] In addition to abutting against the side of the flexible circuit board 12 facing away from the LED bead 13, the first latching part 112 can also be used to engage at least a portion of the side of the flexible circuit board 12; please refer to Figure 2 ,exist Figure 2 In the embodiment shown, it can be seen that the edges on the left and right sides of the flexible circuit board 12 can abut against the flexible lens 11. Although they do not abut against each other in the figure, the flexible circuit board 12 may shift slightly during the deformation of the flexible lens 11 and abut against the first latching part 112.
[0043] In addition to abutting against the side of the flexible circuit board 12 opposite to the LED bead 13, the first latching part 112 can also be used to at least partially abut against the side of the flexible circuit board 12 where the LED bead 13 is located; Figure 2 In the illustrated embodiment, the first latching portion 112 protrudes into the receiving cavity 11a, thereby at least partially abutting against the side of the flexible circuit board 12 where the LED beads 13 are located. Similarly, in Figure 2 Although the flexible circuit board 12 is not in contact with the first latching part 112 during the deformation of the flexible lens 11, the flexible circuit board 12 can be slightly displaced to contact the first latching part 112.
[0044] In the embodiment where the first latching part 112 engages with the side of the flexible circuit board 12 facing away from the lamp bead 13 and the side edge of the flexible circuit board 12, the lamp bead 13 can be exposed more completely, avoiding external obstruction of the lamp bead 13's light emission and improving the working efficiency of the floodlight.
[0045] In the embodiment where the first latching part 112 engages with the side of the flexible circuit board 12 facing away from the lamp bead 13 and the side of the flexible circuit board 12 where the lamp bead 13 is located, the flexible circuit board 12 can be limited on both sides, providing a better limiting effect for the flexible circuit board 12 and ensuring the stability of the relative positional relationship between the lamp bead 13 and the first refractive surface 11b.
[0046] Of course, in some embodiments, the first latching part 112 can be used to cooperate with both sides and both sides of the flexible circuit board 12 simultaneously to provide a better limiting effect.
[0047] Please refer to Figure 2 and Figure 4 In some embodiments, the flexible lens 11 includes a main body 111 and a second latching portion 113; the second latching portion 113 is disposed on the outer side of the main body 111 facing away from the receiving cavity 11a; the second latching portion 113 is distributed along the length direction of the flexible lens 11.
[0048] The second latching part 113 is the part of the flexible lens 11 used to connect external components. The distribution of the second latching part 113 along the length direction of the flexible lens 11 means that at least two positions of the second latching part 113 are provided in the length direction of the flexible lens 11, or the second latching part 113 is strip-shaped and the length direction of the second latching part 113 is parallel to the length direction of the flexible lens 11.
[0049] like Figure 2 As shown, in some embodiments, the second latching portion 113 may form a latching groove 113a; please refer to further details. Figure 4 In one example, the flexible lens 11 is used to connect to the housing 20, and the housing 20 may have a latching protrusion to engage with the latching groove 113a. Of course, in other embodiments, the second latching part 113 may be a latching protrusion, or a male or female latching structure in a latching structure.
[0050] It is evident that the second snap-fit part 113 facilitates the connection between the flexible linear floodlight strip 10 and the external environment.
[0051] Please refer to Figure 2 In some embodiments, the flexible lens 11 is a fog lens. This allows the flexible lens 11 to inherently possess a degree of fogging, enabling light mixing or improving the uniformity of emitted light brightness. Titanium dioxide can be added to the flexible lens 11 to achieve light diffusion and fogging. Titanium dioxide has better anti-yellowing properties, which can increase the lifespan of the flexible linear floodlight strip 10 by 3-5 times.
[0052] Please refer to Figure 2 In some embodiments, the surface shape of the first refractive surface 11b and / or the second refractive surface 11c is a freeform surface; and / or the flexible lens 11 is an extruded part.
[0053] Because the flexible lens 11 is strip-shaped, the first refractive surface 11b and the second refractive surface 11c are generally cylindrical. Therefore, the meaning of the surface shape of the cylindrical lens being a freeform surface is the same as the meaning of the first refractive surface 11b and the second refractive surface 11c being freeform surfaces.
[0054] The first refractive surface 11b and / or the second refractive surface 11c are free-form surfaces, which can have a better modulation effect on the emitted light of the lamp bead 13, achieving a large-angle light emission of 140°~150°, which is more than 20% higher than the solution in related technologies (the light emission angle is usually less than 120°).
[0055] The first refractive surface 11b and the second refractive surface 11c can be either freeform surfaces. In this embodiment, when the first refractive surface 11b is a freeform surface, since the first refractive surface 11b is on the inside during the bending process, the deformation is small, which can ensure a more stable modulation effect. When the second refractive surface 11c is a freeform surface, since the second refractive surface 11c is on the outside, it has a larger setting area, which can modulate the light more finely.
[0056] The first refractive surface 11b and the second refractive surface 11c can both be freeform surfaces, thereby enabling more precise modulation of the emitted light from the lamp bead 13.
[0057] The first refractive surface 11b and the second refractive surface 11c can be formed by grinding after the flexible lens 11 is formed; or they can be formed directly through a precision extrusion process, in which case the flexible lens 11 is considered an extruded part. Of course, the flexible lens 11 being an extruded part can also mean that the refractive element 114 mentioned above is an extruded part. Using the flexible lens 11 as an extruded part can improve production efficiency.
[0058] Please refer to Figure 2 In some embodiments, the light emitted from the lamp bead 13 is directly incident on the first refractive surface 11b; the light from the lamp bead 13 incident on the second refractive surface 11c is directly emitted after passing through the flexible lens 11 to form projected light.
[0059] The light emitted from the LED 13 directly enters the second refractive surface 11c, meaning that the light does not pass through other components between the LED 13 and the second refractive surface 11c. The light from the LED 13 that enters the second refractive surface 11c passes through the flexible lens 11 and is directly emitted to form the projected light, meaning that the light does not pass through other components after exiting the second refractive surface 11c, but directly becomes the final emitted light, i.e., the projected light. In one example, the projected light can be used for wall washing, in which case the projected light can be directly projected onto the wall after exiting the second refractive surface 11c. In another example, the projected light can be used as ambient light, in which case the projected light can be directly projected into the human eye after exiting the second refractive surface 11c.
[0060] It is evident that the flexible lens 11 (or the refractive element 114 and rigid lens 14 in the above embodiments) can undertake the entire modulation task of the light emitted by the lamp bead 13 without the need for additional optical elements. Thus, there are no other optical elements that lose light energy, which improves the optical efficiency of the flexible linear floodlight strip 10. Compared with the multi-optical element modulation scheme in related technologies (generally with an optical efficiency of less than 80%), the optical efficiency is significantly improved (in actual measurements, it can be greater than 90%).
[0061] Using a single lens for all light distribution adjustment also simplifies the structure of the floodlight, expands its applicable temperature range, and allows it to operate within a temperature range of (-40℃) to (+85℃), making it suitable for harsher working environments.
[0062] Please refer to Figure 3 and Figure 4 This utility model also proposes a flexible linear floodlight device 100, which includes the aforementioned flexible linear floodlight strip 10 and a housing 20. The specific structure of the flexible linear floodlight strip 10 is as described in the above embodiments. Since this flexible linear floodlight device 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. Among them, the housing 20 is strip-shaped and distributed along the length direction of the flexible lens 11; the housing 20 is connected to the flexible lens 11 on the side of the flexible lens 11 facing away from the second refractive surface 11c.
[0063] The length direction of the outer shell 20 can be parallel to the length direction of the flexible lens 11. Figure 3 and Figure 4 In the embodiment shown, the outer casing 20 is connected to the flexible lens 11 via a snap-fit structure (refer to the second snap-fit portion 113 above). Since the flexible lens 11 is flexible, it can be pressed along a direction perpendicular to its own length to snap into the outer casing 20.
[0064] The housing 20 can be rigid, so that the housing 20 can be manufactured in advance according to the required installation scenario. After the flexible linear floodlight strip 10 is fixed to the housing 20, the installation can be completed, making the installation more convenient.
[0065] Please refer to Figure 5 and Figure 6 This invention also proposes another flexible linear projection device 200, including a rigid housing 210, a flexible lamp panel 220, a flexible refracting mirror 230, and a flexible diffuser 240. The rigid housing 210 is strip-shaped and has receiving grooves 211 distributed along the length of the rigid housing 210; the flexible lamp panel 220 is strip-shaped and installed in the receiving grooves 211 along the length of the rigid housing 210; the flexible refracting mirror 230 is strip-shaped and disposed on the side of the flexible lamp panel 220 facing away from the rigid housing 210, and is installed in the receiving grooves 211 along the length of the rigid housing 210; the flexible diffuser 240 is strip-shaped and covers the opening of the receiving grooves 211, and is disposed on the side of the flexible refracting mirror 230 facing away from the flexible lamp panel 220; wherein, the flexible lamp panel 220, the flexible refracting mirror 230, and the flexible diffuser 240 are all connected to the rigid housing 210.
[0066] The rigid housing 210 is a component made of a rigid material, such as a profile. Because it is not easily deformed under external forces, it can provide good support.
[0067] The flexible light panel 220 may include LED chips and a strip-shaped flexible circuit board; there are multiple LED chips, which are disposed on the flexible circuit board, and the multiple LED chips are distributed along the length direction of the flexible circuit board to form a strip-shaped flexible circuit board. Figure 5 The light strip shown is a strip-shaped light bar.
[0068] The flexible refracting mirror 230 can be manufactured using flexible materials, such as modified flexible acrylic, allowing it to deform under external force (for example, the flexural modulus of the modified flexible acrylic can be reduced to 800-1200 MPa, achieving a bending capability with a radius of curvature greater than or equal to 3 cm). The flexible refracting mirror 230 can modulate the light path through refraction, thereby distributing the light emitted from the flexible lamp panel 220 and improving the light emission angle and uniformity.
[0069] The flexible refracting mirror 230 can maintain a light transmittance of more than 92% without the addition of a diffusing agent, thus improving light efficiency.
[0070] The flexible diffuser 240 is a component with added diffusing agent, but it is essentially transparent, with a transmittance that can be controlled within the range of greater than or equal to 85% and less than or equal to 95%, achieving diffusion while minimizing the impact on luminous efficacy. The flexible diffuser 240 can further homogenize the intensity of the emitted light and conceal the bursting point of the LED beads.
[0071] The receiving groove 211 is also strip-shaped and parallel to the rigid shell 210. Thus, the flexible lamp panel 220 installed in the receiving groove 211 can be distributed along the length of the rigid shell 210 by installing it along the length of the receiving groove 211. The light emitted by the flexible lamp panel 220 first passes through the flexible refracting mirror 230, then through the flexible diffuser 240, and finally exits through the flexible linear projection device 200.
[0072] Because the rigid housing 210 provides excellent support, when the flexible lamp panel 220, flexible refracting mirror 230, and flexible diffuser 240 are all connected to the rigid housing 210, the rigid housing 210 can maintain a stable relative positional relationship among the flexible lamp panel 220, flexible refracting mirror 230, and flexible diffuser 240, allowing the flexible refracting mirror 230 to stably distribute the light emitted from the flexible lamp panel 220. Simultaneously, the flexible lamp panel 220, flexible refracting mirror 230, and flexible diffuser 240 only maintain their fixed relative positions when installed on the rigid housing 210; before installation, each can be independently bent and deformed, and without the constraint of a rigid lens, a larger bending angle can be achieved.
[0073] Please refer to Figure 5 and Figure 6 In some embodiments, the rigid outer shell 210 includes a main shell portion 212 that is strip-shaped and a third snap-fit portion 213; the third snap-fit portion 213 is disposed on the main shell portion 212 and located on both sides of the receiving groove 211; the flexible diffusion cover 240 includes a main cover portion 241 that is strip-shaped and a fourth snap-fit portion 242; the fourth snap-fit portion 242 is disposed on both sides of the main cover portion 241; the third snap-fit portion 213 is engaged with the fourth snap-fit portion 242.
[0074] The main shell 212 is the main body of the rigid shell 210, which plays a role in bearing and supporting; the third snap-fit part 213 is connected to the main shell 212, and the two can be set as one piece.
[0075] The main cover 241 is the main body of the flexible diffusion cover 240, and plays the main diffusion role. The fourth snap-fit part 242 is connected to the main cover 241, and the two can be installed as a single unit.
[0076] In the third latching part 213 and the fourth latching part 242, one forms a male latching structure and the other forms a female latching structure, thereby completing the fastening. Both the third latching part 213 and the fourth latching part 242 are strip-shaped, so that the main shell part 212 and the main cover part 241 can be fixed to each other at various positions in the length direction, ensuring the stability of the relative positional relationship between the rigid shell 210 and the flexible diffuser cover 240.
[0077] The flexible diffuser 240 can also be pressed in a direction perpendicular to its own length so that the third latching part 213 and the fourth latching part 242 are engaged with each other.
[0078] Please refer to Figure 5 and Figure 6 In some embodiments, the rigid housing 210 includes a main housing portion 212 that is strip-shaped and a limiting rib 214; the limiting rib 214 is disposed in the receiving groove 211 and cooperates with the bottom surface of the flexible refracting mirror 230 facing the flexible lamp plate 220 and the side surface of the flexible refracting mirror 230.
[0079] The fit between the limiting rib 214 and the side of the flexible light panel 220 can be understood as a clearance fit, transition fit, or interference fit between the limiting rib 214 and the side of the flexible light panel 220; the fit between the limiting rib 214 and the bottom surface of the flexible light panel 220 can be understood as a partial contact between the limiting rib 214 and the bottom surface of the flexible light panel 220.
[0080] The limiting rib 214 can limit the flexible lens in two directions (along the direction of the emitted light of the flexible lamp panel 220 and in the direction perpendicular to both the direction of the emitted light of the flexible lamp panel 220 and the length direction of the flexible lamp panel 220), ensuring that the flexible lens is accurately positioned and not easily displaced after being installed on the rigid housing 210, thus ensuring stable light distribution to the flexible lamp panel 220.
[0081] In some embodiments, the side of the flexible lamp panel 220 facing away from the flexible refracting mirror 230 is bonded to the bottom of the receiving groove 211.
[0082] This makes the relative positional relationship between the flexible lamp panel 220 and the rigid housing 210 more stable, and the flexible lens can provide a more stable light distribution for the flexible lamp panel 220. At the same time, the heat of the flexible lamp panel 220 can be dissipated by the rigid housing 210, preventing overheating.
[0083] Please refer to Figure 5 and Figure 6 In some embodiments, the flexible refracting mirror 230 is a cylindrical peanut-shaped lens. The cylindrical peanut-shaped lens can expand the light emission angle in the width direction of the flexible lamp panel 220, improve the light emission uniformity, and facilitate the achievement of large-angle uniform light emission.
[0084] Please refer to Figure 6 In some embodiments, the thickness of the flexible diffuser 240 is greater than or equal to 1 mm and less than or equal to 2 mm.
[0085] The thickness of the flexible diffuser 240 affects its light transmittance and mechanical strength. If the thickness is too low, the strength is low, making it difficult to install stably onto the rigid housing 210; if the thickness of the flexible diffuser 240 is too high, the transmittance decreases, affecting the working efficiency of the projection device.
[0086] When the thickness of the flexible diffuser 240 is greater than or equal to 1 mm and less than or equal to 2 mm, it can just balance strength and light transmittance, ensuring that the flexible diffuser 240 has sufficient strength and the light projection device has high working efficiency.
[0087] In one example, the thickness of the projection device can be 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, or 2.0mm.
[0088] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.
Claims
1. A flexible linear light bar, characterized in that, include: A flexible lens, which is strip-shaped and has an internal accommodating cavity; the accommodating cavity is strip-shaped and distributed along the length direction of the flexible lens; A flexible circuit board is disposed within the accommodating cavity; the flexible circuit board is strip-shaped and distributed along the length direction of the flexible lens; the flexible circuit board is connected to the flexible lens; Multiple LED beads are disposed on the side of the flexible circuit board facing away from the flexible lens; the multiple LED beads are distributed along the length direction of the flexible lens; The flexible lens includes a first refractive surface and a second refractive surface. The first refractive surface is located within the accommodating cavity and is positioned opposite to and spaced apart from the lamp beads. The second refractive surface is located on the surface of the flexible lens facing away from the accommodating cavity and is positioned corresponding to the first refractive surface.
2. The flexible linear light bar of claim 1, wherein, The flexible lens includes a main body and a first latching portion; the first latching portion is disposed on the side of the main body facing the receiving cavity; the first latching portion engages with the side of the flexible circuit board facing away from the lamp bead; the first latching portion also engages with at least a portion of two opposite sides of the flexible circuit board and / or at least a portion of the side of the flexible circuit board where the lamp bead is located.
3. The flexible linear light bar of claim 1, wherein, The flexible lens includes a main body and a second latching part; the second latching part is disposed on the outer side of the main body facing away from the accommodating cavity; the second latching part is distributed along the length direction of the flexible lens.
4. The flexible linear light bar of claim 1, wherein, The flexible lens is a fog lens.
5. The flexible linear light bar of claim 1, wherein, The first refractive surface and / or the second refractive surface are freeform surfaces; and / or the flexible lens is an extruded part.
6. The flexible linear light bar of claim 1, wherein, The light emitted from the lamp bead directly enters the second refractive surface; the light from the lamp bead that enters the first refractive surface passes through the flexible lens and is then directly emitted to form projected light.
7. A flexible linear light-projecting device, characterized in that, It includes a flexible linear floodlight strip and a housing as described in any one of claims 1-6; the housing is strip-shaped and distributed along the length direction of the flexible lens; the housing is connected to the flexible lens on the side of the flexible lens facing away from the second refractive surface.
8. A flexible linear light-projecting device, characterized in that, include: A rigid outer shell, in the shape of a strip, and having receiving grooves distributed along the length of the rigid outer shell; The flexible light panel is strip-shaped and installed in the receiving groove along the length of the rigid outer shell; A flexible refracting mirror, in the shape of a strip, is disposed on the side of the flexible lamp panel facing away from the rigid housing, and is installed in the receiving groove along the length direction of the rigid housing; A flexible diffuser cover, in the shape of a strip, covers the opening of the receiving groove and is disposed on the side of the flexible refracting mirror facing away from the flexible lamp plate; The flexible light panel, the flexible refracting mirror, and the flexible diffuser are all connected to the rigid outer shell.
9. The flexible linear light projection device as described in claim 8, characterized in that, The rigid outer shell includes a main shell portion that is strip-shaped and a third snap-fit portion; the third snap-fit portion is disposed on the main shell portion and located on both sides of the receiving groove; the flexible diffusion cover includes a main cover portion that is strip-shaped and a fourth snap-fit portion; the fourth snap-fit portion is disposed on both sides of the main cover portion; the third snap-fit portion engages with the fourth snap-fit portion; and / or The rigid outer shell includes a main shell portion that is strip-shaped and a limiting rib; the limiting rib is disposed within the receiving groove and cooperates with the bottom surface of the flexible refracting mirror facing the flexible lamp plate and the side surface of the flexible refracting mirror; and / or The side of the flexible lamp panel facing away from the flexible refracting mirror is bonded to the bottom of the receiving groove; and / or The flexible refracting mirror is a cylindrical peanut-shaped lens.
10. The flexible linear light-projecting device as described in claim 8, characterized in that, The thickness of the flexible diffusion hood is greater than or equal to 1 mm and less than or equal to 2 mm.