Bracelet lamp
By designing a translucent flexible shell, a retractable rigid roll and LED light source components and reflective dots on the light guide strip in the bracelet lamp, the problem of large local brightness differences and insufficient length of the bracelet lamp is solved, and higher uniformity and a larger scope of application are achieved.
Patent Information
- Application Number
- CN202421582577.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-07-04
AI Technical Summary
Due to the light propagation and scattering characteristics of existing bracelet lamps, the brightness of the head and tail ends is large, and the local light visual efficiency is low, which limits the length of the bracelet lamp and cannot effectively and reliably wrap the arm circumference of different groups of people and scenes.
A bracelet lamp is designed including a translucent flexible shell, a retractable rigid roll sheet and a lamp body assembly. The LED light source assembly of the lamp body assembly is distributed at both ends of the light guide bar, and reflective wave dots are provided on the light guide bar to improve uniformity.
By increasing the length of the bracelet lamp to ≥450mm, effective wrapping is achieved in different groups and scenarios, the problem of lack of local brightness is alleviated, and the uniformity and scope of application of the bracelet lamp are improved.
Smart Images
Figure CN222669709U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wearable lighting, and more specifically, to a wrist ring light. Background Art
[0002] A wristband light is a lamp that diffuses a point light source and converts it into a linear light source or a surface light source through a strip light guide for illumination. As the name suggests, a wristband light is also a wearable lighting fixture. By wearing it on the wrist or arm for special lighting use, the user can free his hands while lighting, thereby improving the convenience of use. In the prior art, there is also a wristband light that can achieve the function of curling after being tapped, that is, it can change from a stretched straight strip structure to a curled arc structure after being tapped. Existing wristband lights usually use a light-emitting component at one end. Due to the propagation and scattering characteristics of light, the brightness of the wristband light is higher at the light source, while the brightness is lower at a location far from the light source, resulting in a large difference in brightness between the head and tail of the wristband light. The longer the distance, the greater the difference, thereby affecting the local light visual efficiency of the wristband light. Therefore, in order to reduce this effect, the length of wristband light products on the market is within 35CM. For people with slightly thicker bare arms and scenes such as wearing coats in winter, the wristband light cannot be effectively and reliably wrapped around the arm. Utility Model Content
[0003] The purpose of the utility model is to overcome the problem of poor local brightness of a bracelet light due to its long length, and to provide a bracelet light that can improve the local brightness. At the same time, the length of the bracelet light can be increased so that the bracelet light can be effectively and reliably wrapped around the arm for different groups of people and in different scenarios during use.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0005] A bracelet lamp comprises a light-transmissive flexible shell, a retractable rigid coil, and a lamp body assembly, wherein a hollow cavity is provided in the flexible shell, the lamp body assembly and the rigid coil are stacked and installed in the cavity, and the rigid coil is recessed toward the lamp body assembly side and convex away from the lamp body assembly side; the lamp body assembly comprises an LED light source assembly and a light guide bar, and the LED light source assembly is distributed at both ends of the light guide bar.
[0006] The utility model installs a lamp body assembly and a rigid roll sheet together in a flexible housing, so that the lamp body assembly realizes the lighting function, and utilizes the rigid roll sheet to generate a curling force when slapped, so as to realize curling the straight-bar bracelet light into an arc or annular structure, so that it can be worn on the user's wrist or arm to free the user's hands while providing lighting. Specifically, the utility model realizes the function of the bracelet light of one clap and then curls up by utilizing the characteristic that one side of the rigid roll sheet is concave and the other side is convex; the rigid roll sheet is arranged in an arc shape, preferably an arc structure, the concave side of the arc structure is arranged close to the lamp body assembly, the convex side of the rigid roll sheet bulges outward, and the convex side of the rigid roll sheet is exactly the side closest to the user's contact surface when the user wears the bracelet light, and the convex side of the rigid roll sheet is slapped toward the user's wrist or arm, so that the bracelet light can be curled and wrapped around the user's wrist or arm; the LED light source assembly in the lamp body assembly is then utilized for lighting, and the light guide strip is used for guiding light, so that the point light source of the LED light source assembly is presented in the form of a line light source or a surface light source;
[0007] Currently, there are only LED designs for the head on the market, and no LED designs for the tail, which will result in insufficient brightness at the tail. The LED light source components of the utility model are set at both ends, which can also alleviate the problem of insufficient brightness at the far end of the LED light source components to a certain extent. Compared with the wristband lights in the prior art, the wristband lights of the utility model are designed to lengthen the dimensions of the flexible shell, rigid coil and lamp body components, and specifically, by setting the LED light source components at both ends of the light guide bar, so as to increase the length of the wristband lights without affecting its local brightness, thereby increasing the range of people who can use the wristband lights. The total length of the wristband lights of the utility model is ≥450mm, and the wristband lights can be effectively and reliably wrapped around the arm circumference for people with slightly thicker bare arms and wearing coats in winter.
[0008] Furthermore, a number of reflective wave spots are arranged in sequence between the LED light source assemblies at both ends of the light guide bar, and the particle sizes of the reflective wave spots located in the middle of the light guide bar are larger than the particle sizes located at both ends of the light guide bar, and the particle sizes of the reflective wave spots change from large to small from the middle of the light guide bar to both ends. By arranging reflective wave spots on the light guide strip, it is possible to reflect light while guiding light, and the uneven setting of the particle size of the reflective wave spots, more specifically, the particle size of the reflective wave spots changes from large to small from the middle of the light guide strip to the two ends, so that the reflection intensity in the middle of the bracelet light is the largest, and the reflection intensity at the two ends is the smallest, so that the low lighting brightness caused by the distance between the middle and the LED light source assembly due to the position is compensated by the reflection intensity, so that the lighting brightness at various positions of the bracelet light tends to be consistent, greatly improving the uniformity of light and overcoming the problem of local brightness deficiency; moreover, within the scope of cognition of technical personnel in this field, wave spots include but are not limited to regular or irregular point structures such as circles and squares for reflective effects. The specific size of the point structure is not limited in this article, and it can be set accordingly as needed, and the point shape is relative; further, the reflective wave spots can be coated, pasted or printed on the surface of the light guide strip, and can be flush with the surface of the light guide strip, or slightly protrude from the surface of the light guide strip, or be recessed in the surface of the light guide strip. In this article, the functions of the reflective dots are to reflect and focus light. Any structure that can achieve similar functions can be used to replace the reflective dots and be applied to the bracelet light of this application.
[0009] Furthermore, a plurality of the reflective dots are distributed on both the upper and lower sides of the light guide strip. The setting of the reflective dots is conducive to increasing the brightness of the middle part of the bracelet light, so within the setting space allowed by the light guide strip, the more reflective dots are set, the more conducive to improving the uniformity of light, but considering the problem of reflection intensity, the reflective dots should also be set accordingly in combination with the particle size of the reflective dots. The setting of reflective dots with a reasonable particle size can better meet the requirements of uniformity of light.
[0010] Furthermore, a plurality of the reflective wave dots are arranged in a row from one end of the light guide strip to the other end, and the wave dots in two adjacent rows are arranged in parallel. The length direction of the light guide strip is defined as the direction along which the light guide strip surrounds the wrist or arm of the user, and the reflective wave dots are arranged in sequence along the length direction of the light guide strip. In order to improve the uniformity of light, the reflective wave dots can be arranged in multiple rows, and the parallel arrangement between the wave dots in two adjacent rows is more conducive to improving the uniformity of reflection.
[0011] Furthermore, the center distances between two adjacent reflective dots in a row are equal. Such an arrangement is conducive to increasing the number of reflective dots and improving the uniformity of the light of the bracelet light. Furthermore, at the same longitudinal position between different rows, the reflective dots are also arranged in columns. Of course, the reflective dots arranged in a staggered manner can also achieve the same effect.
[0012] Furthermore, the plurality of light-reflecting dots are all white. White has the best light-reflecting performance and can reflect light of all colors. Within the scope of knowledge of those skilled in the art, the light-reflecting dots may also be other colors.
[0013] Furthermore, a strip-shaped hollow groove is provided in the middle of the light guide bar, and the hollow groove extends from one end of the light guide bar to the other end; the LED light source components are respectively located at both ends of the hollow groove. The setting of the hollow groove can realize that when LED light source components of different colors are set at both ends of the light guide bar, different colors of light on the left and right can be lit at the same time without mutual light interference. Preferably, multiple rows of reflective wave dots are distributed on both the upper and lower sides of the hollow groove.
[0014] Furthermore, the hollow grooves are arranged in sections, and two adjacent hollow grooves are not connected to each other. The two adjacent hollow grooves are connected by thin ribs to form a segment, which is beneficial to improve the strength of the light guide strip and prevent the middle from breaking.
[0015] Furthermore, the LED light source assembly includes a driving board assembly, a battery, a cable and a plurality of LED light groups that can emit lights of the same color or different colors. The plurality of LED light groups are respectively installed at both ends of the light guide bar and are connected to the driving board assembly and the battery through the cable. The driving board assembly is also electrically connected to the battery, and the cable extends from one end of the light guide bar to the other end. The battery provides power for the LED light group. As a removable power source, the battery is convenient for realizing the lighting function of the bracelet light; the driving board assembly is used to provide drive for the LED light group. The cable is used to connect the LED light groups distributed at both ends of the light guide bar, mainly to electrically connect them to the driving assembly and the battery. Within the knowledge of those skilled in the art, the cable can also be replaced by other structures, as long as the electrical connection between the LED light group and the driving board assembly and the battery can be realized.
[0016] Furthermore, the length of the flexible shell in the extended state is defined as L1, the length of the rigid coil in the extended state is defined as L2, and the wall thickness of the wristband light in the curled state is defined as L3, then L3 = L1 - L2. This arrangement can make the wristband light more coordinated after curling and more in line with the concept of ergonomics.
[0017] Furthermore, the length of the cable is adapted to the length of the light guide bar, and the expansion rate of the cable is 0.95 to 1.05. The cable is arranged on the inner side of the light guide bar, and the inner side referred to here is the side that is closer to the contact part with the user after the bracelet light is worn, that is, the inner side of the arc-shaped or circular ring-shaped structure. The bracelet light is used in a curled state, and the preset curling life of the utility model is at least several thousand times. However, the flexible FFC or FPC cable will have one or more sections of small radius and large curvature bending and straightening during the frequent curling-straightening-curling process of the bracelet light, and the copper wire or aluminum wire or other materials in the cable are easy to fatigue and break. The utility model designs a flexible cable with adhesive backing, which is pasted on the reverse side of the light-emitting surface of the light guide bar, that is, the curled inner arc surface. After curling, the inner arc of the circular natural state is shorter than the outer arc. In the prior art, if the straightened flat state cable is the same length as the light guide bar, the inner arc cable is easy to arch after curling, thereby fatigue fracture in repeated curling and straightening. The bracelet light of the utility model is designed with a certain arc matching length, and the arc length difference between the flexible cable and the light guide strip is matched according to the length of the inner and outer arcs, and by selecting a cable with a certain shrinkage rate, the cable can be slightly longer in the unfolded and straightened state than in the curled state, so that the curled state is its original state or contracted state, and the straightened and stretched state is stretched or original state, thereby avoiding repeated fatigue caused by the arching of the cable and providing a longer curling life for the extended version of the light-distributing bracelet.
[0018] Furthermore, the LED light source assembly also includes a battery box, which includes an upper cover and a lower cover connected to each other, and the battery and the drive board assembly are both installed in the battery box, and the battery box is arranged at the end of the protruding flexible shell. Preferably, the upper cover and the lower cover are detachably connected, and of course, fixed connection or integrated structural design is also applicable to the utility model; the battery box is used to install and protect the battery, and the drive board assembly can be installed inside, which can improve the aesthetics.
[0019] Furthermore, the hollow cavity of the flexible shell includes an outer cavity and an inner cavity, the rigid coil is installed in the inner cavity, and the lamp body assembly is installed in the outer cavity. The flexible shell is divided into cavities, which is convenient for installing the rigid coil and the lamp body assembly. Installing the lamp body assembly in the outer cavity can improve the lighting brightness.
[0020] Furthermore, the flexible shell is provided with a light-transmitting structure on the outer cavity. When the density of the flexible shell is relatively low, its own pores are relatively large, and it can achieve the light-transmitting function by itself, because the light-transmitting structure is provided; when the density of the flexible shell is relatively high and it cannot transmit light by itself, the light-transmitting function can be achieved by providing a light-transmitting structure on the flexible shell. Preferably, the light-transmitting structure is a hollow light-transmitting hole, and the hollow light-transmitting hole can improve the lighting brightness.
[0021] Further, the inner side of the rigid coil is convex, which is conducive to converting the rigid coil from a straight state to a curled state when the rigid coil is hit and stressed.
[0022] Furthermore, the flexible shell is made of cloth material, and the rigid roll sheet is made of steel material. When cloth material is used as the flexible shell, since the cloth body is light-transmissive, it can achieve the light-transmitting function even without an additional light-transmitting structure. Within the scope of knowledge of those skilled in the art, the flexible shell and the rigid roll sheet include but are not limited to the above materials.
[0023] The beneficial effects of the utility model are:
[0024] (1) The particle size of the reflective wave spots located in the middle of the light guide strip is larger than that of the particle sizes located at the two ends of the light guide strip, and the particle size of the reflective wave spots changes from large to small from the middle of the light guide strip to the two ends; this can make the illumination brightness at various positions of the wristband light tend to be consistent, greatly improving the uniformity of light and overcoming the problem of lack of local brightness;
[0025] (2) The use of white reflective dots can improve the reflective performance and the uniformity of the light of the bracelet light;
[0026] (3) The light guide strip is hollowed out to avoid cross-lighting when using LED light groups of different colors, making the bracelet light present a colorful lighting effect;
[0027] (4) The length of the cable is adapted to the length of the light guide strip, and the expansion and contraction rate of the cable is set accordingly, which can avoid repeated fatigue caused by the arching of the cable and extend the curling life of the bracelet light;
[0028] (5) Setting the total length of the wristband light to ≥450 mm can increase the applicable range of the wristband light, making it suitable for people with slightly thicker bare arms and for scenes where people wear coats in winter. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a structural diagram of a wristband light in the first direction of the unfolded state of the utility model.
[0030] Figure 2 It is a structural diagram of a wristband light in the second direction of the unfolded state of the utility model.
[0031] Figure 3 It is a structural diagram of a wristband light in a curled state according to the utility model.
[0032] Figure 4 The utility model is an exploded structural diagram of a wrist ring light.
[0033] Figure 5 It is a structural diagram of the lamp body assembly of the utility model in the first direction of the unfolded state.
[0034] Figure 6 It is a structural diagram of the lamp body assembly of the utility model in the second direction of the unfolded state.
[0035] Figure 7 It is a structural diagram of the lamp body assembly of the utility model in the third direction of the unfolded state.
[0036] Figure 8 yes Figure 7 AA section view in.
[0037] Fig. 9 is a cross-sectional view of the flexible shell.
[0038] Fig.10 It is a structural diagram of the light guide strip.
[0039] Fig.11 It is a structural diagram of a rigid roll.
[0040] The illustrations are as follows:
[0041] 1. Flexible shell; 11. Outer cavity; 111. Hollow light-transmitting hole; 12. Inner cavity; 2. Rigid coil; 3. Lamp body assembly; 31. LED light source assembly; 311. Drive board assembly; 312. Battery; 313. Cable; 314. LED lamp group; 315. Battery box; 3151. Upper cover; 3152. Lower cover; 32. Light guide strip; 321. Reflective dots; 322. Hollow groove. DETAILED DESCRIPTION
[0042] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.
[0043] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.
[0044] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:
[0045] Example 1
[0046] like Figures 1 to 11 The utility model is shown in Example 1 of a wristband light, specifically see Figures 1 to 4 , including a light-transmissive flexible shell 1, a rollable rigid coil sheet 2, and a lamp body assembly 3. A hollow cavity is provided in the flexible shell 1. The lamp body assembly 3 and the rigid coil sheet 2 are stacked and installed in the cavity. The rigid coil sheet 2 is recessed toward the lamp body assembly 3 and convex away from the lamp body assembly 3. The lamp body assembly 3 includes an LED light source assembly 31 and a light guide bar 32. The LED light source assembly 31 is distributed at both ends of the light guide bar 32.
[0047] Preferably, the rigid roll sheet 2 is arc-shaped. Fig.11 .
[0048] Furthermore, a number of reflective dots 321 are sequentially arranged between the LED light source assemblies 31 at both ends of the light guide bar 32, and the particle size of the reflective dots 321 located in the middle of the light guide bar 32 is larger than the particle size located at both ends of the light guide bar 32, and the particle size of the reflective dots 321 changes from large to small from the middle of the light guide bar 32 to both ends. Specifically, the reflective dots 321 can be coated, pasted, or printed on the surface of the light guide bar 32, can be flush with the surface of the light guide bar 32, can be slightly protruding from the surface of the light guide bar 32, or can be recessed in the surface of the light guide bar 32. In this article, the function of the reflective dots 321 is to reflect and focus light, and any structure that can achieve similar functions can be used to replace the reflective dots 321 in the bracelet light of this application.
[0049] Among them, Fig. 9 As shown, the hollow cavity of the flexible shell 1 includes an outer cavity 11 and an inner cavity 12, the rigid coil 2 is installed in the inner cavity 12, and the lamp body assembly 3 is installed in the outer cavity 11. The flexible shell 1 is provided with a light-transmitting structure 111 on the outer cavity 11. The flexible shell 1 is divided into cavities, which is conducive to the installation of the rigid coil 2 and the lamp body assembly 3. Installing the lamp body assembly 3 in the outer cavity 11 can improve the lighting brightness. Preferably, the light-transmitting structure 111 is a hollow light-transmitting hole, which can improve the lighting brightness.
[0050] As an improvement to this embodiment, the inner side of the rigid coil 2 is convex. Preferably, the flexible shell 1 is made of cloth material, and the rigid coil 2 is made of steel material. Within the scope of knowledge of those skilled in the art, the flexible shell 1 and the rigid coil 2 include but are not limited to the use of the above materials. When the density of the flexible shell 1 is relatively low, its own pores are relatively large, and it can achieve the light transmission function by itself, as the light transmission structure is set. A light transmission structure 111 can also be set on the cloth body to enhance the light transmission effect.
[0051] As an improvement to the present embodiment, the lengths of the flexible shell 1, the rigid coil 2, and the lamp body assembly 3 are respectively set to be greater than or equal to 450 mm; in order to increase the range of applicable people for the bracelet light, the existing bracelet lights on the market are less than 360 mm in length, which is not convenient for people with slightly thicker bare arms and for wearing coats in winter, etc. The bracelet light of the utility model can be effectively and reliably wrapped around the arm in different applicable scenarios.
[0052] As an improved solution of this embodiment, Fig.10 As shown, a plurality of reflective dots 321 are distributed on both the upper and lower sides of the light guide strip 32. The setting of the reflective dots 321 is conducive to increasing the brightness of the middle part of the bracelet light, so within the setting space allowed by the light guide strip 32, the more reflective dots 321 are set, the more conducive to improving the uniformity of light, but considering the problem of reflection intensity, the particle size of the reflective dots 321 should also be combined for corresponding setting, and the setting of reflective dots 321 with a reasonable particle size can better meet the requirements of uniformity of light.
[0053] Furthermore, a plurality of reflective dots 321 are arranged in a row from one end to the other end of the light guide strip 32, and two adjacent rows of dots are arranged in parallel. The direction of the light guide strip 32 around the wrist or arm of the user is defined as the length direction, and the reflective dots 321 are arranged in sequence along the length direction of the light guide strip 32. In order to improve the uniformity of light, the reflective dots 321 can be arranged in multiple rows, and the parallel arrangement between two adjacent rows of dots is more conducive to improving the uniformity of reflection.
[0054] Preferably, the center distances between two adjacent reflective dots 321 in a row are equal. Such an arrangement is conducive to increasing the number of reflective dots 321 and improving the uniformity of the light of the bracelet light. Furthermore, at the same longitudinal position between different rows, the reflective dots 321 are also arranged in columns. Of course, the reflective dots 321 arranged in a staggered manner can also achieve the same effect.
[0055] Furthermore, the plurality of reflective dots 321 are all white. White has the best reflective performance and can reflect light of all colors. Within the scope of knowledge of those skilled in the art, the reflective dots 321 can also be other colors.
[0056] As an improved solution of this embodiment, the LED light source assembly 31 includes a driving board assembly 311, a battery 312, a flat cable 313 and a plurality of LED light groups 314 that can emit lights of the same color or different colors. The plurality of LED light groups 314 are respectively installed at both ends of the light guide bar 32 and are connected to the driving board assembly 311 and the battery 312 through the flat cable 313. The driving board assembly 311 is also electrically connected to the battery 312, and the flat cable 313 extends from one end to the other end of the light guide bar 32. The battery 312 provides power for the LED light group 314. The battery 312 is used as a removable power source to facilitate the lighting function of the bracelet light; the driving board assembly 311 is used to provide drive for the LED light group 314. The flat cable 313 is used to connect the LED light groups 314 distributed at both ends of the light guide bar 32, mainly to electrically connect them to the driving assembly and the battery 312. It is within the knowledge of those skilled in the art that the flat cable 313 may also be replaced by other structures as long as electrical connection between the LED light group 314 and the driving board assembly 311 and the battery 312 can be achieved.
[0057] The LED light source assembly 31 further includes a battery box 315, which includes a detachably connected upper cover 3151 and a lower cover 3152. The battery 312 and the drive board assembly 311 are both installed in the battery box 315, and the battery box 315 is arranged at the end of the protruding flexible housing 1. Of course, the structural design of the fixed connection or integral molding between the upper cover 3151 and the lower cover 3152 is also applicable to the utility model; the battery box 315 is used to install and protect the battery 312, and the drive board assembly 311 can be installed inside, which can improve the aesthetics.
[0058] Example 2
[0059] This embodiment is an embodiment of a wristband light. This embodiment is similar to Embodiment 1, except that a strip-shaped hollow groove 322 is provided in the middle of the light guide bar 32, and the hollow groove 322 extends from one end of the light guide bar 32 to the other end; the LED light source components 31 are respectively located at both ends of the hollow groove 322. The setting of the hollow groove 322 can realize that when LED light source components of different colors are set at both ends of the light guide bar 32, different colors of light on the left and right can be lit at the same time without crosstalk. Preferably, multiple rows of reflective dots 321 are distributed on both the upper and lower sides of the hollow groove 322.
[0060] Furthermore, the hollow grooves 322 are arranged in sections, and two adjacent hollow grooves 322 are not connected to each other. The two adjacent hollow grooves 322 are connected by thin ribs to form a segment, which is beneficial to improve the strength of the light guide strip 32 and prevent the middle from breaking.
[0061] Example 3
[0062] This embodiment is another embodiment of a wristband light. This embodiment is similar to Embodiment 1, except that the length of the flat cable 313 matches the length of the light guide strip 32 , and the expansion ratio of the flat cable 313 is 0.95-1.05.
[0063] Define the length of the flexible housing 1 in the extended state as L1, the length of the rigid coil 2 in the extended state as L2, and the wall thickness of the wristband light in the curled state as L3, then L3 = L1-L2. In this embodiment, the length of the flat cable 313 and the length of the light guide bar 32 can be set between L1 and L3 to match their installation positions and be more ergonomic.
[0064] The flat cable 313 is arranged on the inner side of the light guide bar 32. The inner side here refers to the side that is closer to the contact part with the user after the bracelet light is worn, that is, the inner side of the arc-shaped or circular ring-shaped structure. The bracelet light is used in a curled state. The preset curling life of the utility model is at least several thousand times. The flexible FFC or FPC flat cable 313 will have one or more sections of small radius and large curvature bending and straightening during the frequent curling-straightening-curling process of the bracelet light. The copper wire or aluminum wire or other materials in the flat cable 313 are easy to fatigue and break. The utility model designs a flexible flat cable 313 with adhesive backing, which is pasted on the reverse side of the light-emitting surface of the light guide bar 32, that is, the curled inner arc surface. After curling, the inner arc of the circle in the natural state is shorter than the outer arc. In the prior art, if the flat cable 313 in the straightened plane state is the same length as the light guide bar 32, the inner arc flat cable 313 is easy to arch after curling, thereby fatigue and break during repeated curling and straightening. The bracelet light of the present invention is designed with a certain arc matching length, and the arc length difference between the flexible flat cable 313 and the light guide strip 32 is matched according to the length of the inner and outer arcs, and by selecting a flat cable 313 with a certain shrinkage rate, the flat cable 313 can be slightly longer in the unfolded and straightened state than in the curled state, so that the curled state is its original state or contracted state, and the straightened and stretched state is stretched or original state, thereby avoiding repeated fatigue caused by the arching phenomenon of the flat cable 313, and providing a longer curling life for the extended version of the light-distributing bracelet.
[0065] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.
Claims
1. A wristband light, comprising a light-transmissive flexible shell (1), a retractable rigid roll sheet (2), and a lamp body assembly (3), wherein a hollow cavity is provided in the flexible shell (1), the lamp body assembly (3) and the rigid roll sheet (2) are stacked and arranged in a stacked manner and are both installed in the cavity, and the rigid roll sheet (2) is recessed toward the lamp body assembly (3) and convex away from the lamp body assembly (3); characterized in that: The lamp body assembly (3) comprises an LED light source assembly (31) and a light guide bar (32); the LED light source assembly (31) is distributed at both ends of the light guide bar (32).
2. The wristband light according to claim 1, characterized in that: A plurality of light reflecting dots (321) are sequentially arranged between the LED light source assemblies (31) located at both ends of the light guide bar (32); the particle sizes of the light reflecting dots (321) located in the middle of the light guide bar (32) are larger than those located at both ends of the light guide bar (32); and the particle sizes of the light reflecting dots (321) change from large to small from the middle of the light guide bar (32) to both ends.
3. The wristband light according to claim 2, characterized in that: The plurality of light-reflecting dots (321) are distributed on both upper and lower sides of the light-guiding strip (32).
4. The wristband light according to claim 3, characterized in that: The plurality of reflective dots (321) are all white.
5. The wristband light according to any one of claims 1 to 4, characterized in that: A strip-shaped hollow groove (322) is provided in the middle of the light guide bar (32), and the hollow groove (322) extends from one end of the light guide bar (32) to the other end; the LED light source components (31) are respectively located at both ends of the hollow groove (322).
6. The wristband light according to claim 5, characterized in that: The hollow grooves (322) are arranged in sections, and two adjacent sections of the hollow grooves (322) are not connected to each other.
7. The wristband light according to claim 1, characterized in that: The LED light source assembly (31) comprises a driving board assembly (311), a battery (312), a flat cable (313), and a plurality of LED light groups (314) capable of emitting lights of the same color or different colors. The plurality of LED light groups (314) are respectively installed at two ends of a light guide bar (32) and are connected to the driving board assembly (311) and the battery (312) through the flat cable (313). The driving board assembly (311) is also electrically connected to the battery (312). The flat cable (313) extends from one end of the light guide bar (32) to the other end.
8. The wristband light according to claim 7, characterized in that: The length of the arrangement wire (313) is adapted to the length of the light guide strip (32), and the expansion ratio of the arrangement wire (313) is 0.95-1.
05.
9. The wristband light according to claim 7, characterized in that: The LED light source assembly (31) further comprises a battery box (315), wherein the battery box (315) comprises an upper cover (3151) and a lower cover (3152) which are connected to each other, wherein the battery (312) and the drive board assembly (311) are both installed in the battery box (315), and the battery box (315) is arranged at an end portion protruding from the flexible housing (1).
10. The wristband light according to claim 1, characterized in that: The hollow cavity of the flexible shell (1) comprises an outer cavity (11) and an inner cavity (12), the rigid coil (2) is mounted in the inner cavity (12), and the lamp body assembly (3) is mounted in the outer cavity (11).
11. The wristband light according to claim 10, characterized in that: The flexible housing (1) is provided with a light-transmitting structure (111) on the outer cavity (11).
12. The wristband light according to claim 1, characterized in that: Define the length of the flexible shell (1) in the extended state as L1, the length of the rigid coil (2) in the extended state as L2, and the wall thickness of the wristband light in the curled state as L3, then L3 = L1 - L2.
13. The wristband light according to claim 1, characterized in that: The flexible shell (1) is made of cloth material, and the rigid coil (2) is made of steel material.