Toothbrush with light therapy effect

By designing a detachable, light-transmitting brush head and handle structure, the toothbrush can emit red and blue light, solving the problems of large size and high cost of existing toothbrushes, and achieving multi-angle light therapy effects and environmentally friendly design.

CN224306972UActive Publication Date: 2026-06-02GUANGDONG ROMAN TECH CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGDONG ROMAN TECH CO LTD
Filing Date
2025-06-06
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing toothbrush heads are bulky, costly, and offer limited phototherapy effects, failing to effectively improve oral health.

Method used

Design a toothbrush with light therapy effect, featuring a detachable brush head and handle structure. The brush head is made of a translucent material and has built-in light-emitting components and light guides, capable of emitting red and blue light. The handle is integrated into the handle to reduce size and cost.

Benefits of technology

It achieves multi-angle phototherapy effects, improves user experience, reduces production costs, and is more environmentally friendly.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a toothbrush with light therapy effect, including detachable handle and brush head, the upper end part of handle is equipped with the installation unit for fixing brush head, the installation unit department is equipped with light guide piece no.
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Description

Technical Field

[0001] This utility model belongs to the field of oral care products technology, specifically a toothbrush with light therapy effect. Background Technology

[0002] The oral cavity is one of the main routes for bacteria, viruses, fungi and other foreign antigens to enter the human body. In addition to this exogenous burden, there are also a large number of endogenous microbial flora that parasitize the oral cavity, teeth and mucosal surfaces, providing the host with a large number of antigenic stimuli and constantly affecting oral health.

[0003] As a result, many toothbrushes with antibacterial effects have appeared on the market, and these toothbrushes can indeed play a certain role in sterilization and disinfection. However, the light emitted from the brush head is singular, and the functional effect is limited. Moreover, the brush head, as a consumable, needs to be replaced frequently. Currently, the brush head is usually connected to the handle, which makes it relatively large and expensive. Utility Model Content

[0004] The purpose of this invention is to provide a toothbrush with a light therapy effect to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A toothbrush with a light therapy effect, comprising a detachably connected handle and a brush head;

[0007] The upper end of the handle is provided with a mounting part for fixing the brush head. A light guide is provided at the mounting part. An electrically connected light-emitting component and a control component are installed inside the handle. The light emitted by the light-emitting component is transmitted to the brush head through the light guide. The light-emitting component can emit blue and red light individually or simultaneously.

[0008] The brush head includes a fixing part and bristles, both of which are made of a light-transmitting material. The fixing part and the mounting part are detachably connected. The light transmitted through the light guide is guided to the oral cavity through the entire brush head.

[0009] In a further technical solution, the fixing part is made of light-transmitting hard plastic material, and a soft plastic light guide component is integrally molded on the fixing part by secondary injection molding. The soft plastic light guide component is a light-guiding flexible plastic and is located in the middle of several bristles.

[0010] In a further technical solution, the fixing part is provided with an open slot for accommodating the mounting part on the side near the mounting part, a locking block is provided at the bottom of the slot, the bottom of the fixing part is provided with an opening communicating with the slot, and locking slots are provided on both sides of the slot.

[0011] The mounting part has sliders on both sides of the corresponding slot, and a card hole for cooperating with the card block is provided at the end face of the light guide.

[0012] In a further technical solution, the handle includes a gripping part, a connecting part at the upper end of the gripping part, and a mounting part at the upper end of the connecting part. The mounting part is flat and forms a step between it and the connecting part.

[0013] The fixing part is provided with a clearance space at the position corresponding to the step.

[0014] A further technical solution is provided, wherein the bristles include an outer ring of cylindrical bristle clusters, an inner ring of flat bristle clusters is provided within the outer ring of cylindrical bristle clusters, an inner ring of cylindrical bristle clusters is provided between the upper and lower ends of the outer ring of cylindrical bristle clusters and the inner ring of flat bristle clusters, and a plurality of soft rubber light guides are provided in the inner ring of flat bristle clusters, wherein the soft rubber light guides are longitudinally flat.

[0015] In a further technical solution, the handle is integrally formed and hollow inside. A mounting hole is provided at the bottom of the handle, and a sealing element is installed at the mounting hole. A light guide hole for fixing the light guide element is provided at the mounting part.

[0016] In a further technical solution, the sealing element includes a fixed base, the bottom surface of which is provided with a groove for installing a sealing cover. The fixed base is provided with an installation cavity and a movable connecting cavity, and a charging interface is installed in the installation cavity.

[0017] The end face of the sealing cover is provided with a sealing bolt and a movable connector. The sealing bolt is fixed in the movable connection cavity, and the movable connector is used to block the charging interface.

[0018] In a further technical solution, the area of ​​the groove is larger than the area of ​​the sealing cap, so that a snap-fit ​​position is formed between the sealing cap and the groove.

[0019] In a further technical solution, the LED beads include several red LED beads and several blue LED beads. The red LED beads and blue LED beads can be lit individually or simultaneously, and each red LED bead and each blue LED bead are arranged alternately.

[0020] In a further technical solution, the LED includes at least one red LED and at least one blue LED, which can be lit individually or simultaneously.

[0021] In a further technical solution, the material of the second soft rubber light guide is TPE, and the material of the brush bristles is transparent polypropylene nylon filament.

[0022] The beneficial effects of this utility model are:

[0023] The light-emitting component of this invention can emit three types of light: red, blue, and red-blue mixed light. The fixing part, bristles, and light guide of the entire brush head are all made of light-guiding material, which can fully exert the phototherapy effect on the oral cavity. The light guide and the fixing part are integrally molded by secondary injection molding. The light guide is made of TPE material with good light guiding effect and good flexibility, and also functions as bristles. In addition, the brush head only retains the part used to fix the bristles, and the brush handle design is removed. The original brush handle is integrated into the handle, which can greatly reduce the size of the brush head, reduce production costs, and be more environmentally friendly.

[0024] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0025] Figure 1 : A three-dimensional structural diagram of this utility model.

[0026] Figure 2 Disassembly diagram of this utility model.

[0027] Figure 3 : Structural diagram of the mounting and fixing parts of this utility model.

[0028] Figure 4 : The bristle distribution diagram of this utility model.

[0029] Figure 5 : Structural diagram of the sealing element of this utility model.

[0030] Reference numerals: 1-Handle, 11-Grip, 12-Connecting part, 13-Mounting part, 131-Slider, 14-Light guide hole, 15-Light guide component one, 151-Snap-in hole, 161-Light-emitting component, 162-Control component, 163-Bracket, 164-LED bead, 17-Step, 18-Mounting hole, 19-Seal, 191-Fixing base, 192-Groove, 193-Sealing cover, 1931-Sealing bolt, 193 2-Modular connector, 194-Mounting cavity, 195-Modular connecting cavity, 196-Charging interface, 197-Snap-on position, 2-Brush head, 21-Fixing part, 22-Brush bristles, 221-Outer ring cylindrical bristle tuft, 222-Inner ring flat bristle tuft, 223-Inner ring cylindrical bristle tuft, 224-Soft rubber light guide part II, 231-Slot, 232-Card block, 233-Opening, 234-Card groove, 235-Clearing position. Detailed Implementation

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

[0032] Please refer to Figure 1-5 ;

[0033] The toothbrush of this invention aims to provide better phototherapy effects and enhance user experience. Specifically, it includes a brush head 2 and a handle 1. The handle 1 includes a grip portion 11, a connecting portion 12, and a mounting portion 13. Since the brush head 2 is a consumable, the handle 1 is detachably connected. The upper end of the handle 1 has a mounting portion 13 for fixing the brush head 2. A light guide 15 is provided at the mounting portion 13. An electrically connected light-emitting component 161 and a control component 162 are installed inside the handle 1. The light emitted by the light-emitting component 161 is transmitted to the brush head 2 through the light guide 15. The light-emitting component 161 can emit blue and red light independently, with the blue light having a wavelength of 460-470 nm. m, Brand: Chongtian Optoelectronics, can inhibit bacterial growth, while the wavelength of red light is 620-630nm. Brand: Yonglin Electronics, can repair gums, strengthen cell regeneration, and promote wound and ulcer healing. The brush head 2 includes a fixing part 21 and bristles 22. In this embodiment, the fixing part 21 only retains the part used to fix the bristles 22 compared to the existing replacement brush head, and the brush handle design is removed. The original brush handle is integrated into the handle 1, which can greatly reduce the size of the brush head 2, reduce production costs, and be more environmentally friendly. The bristles 22 are made of a light-transmitting material, specifically transparent endurance nylon yarn, Tynex: 0900HA. NC410-6mil, brand: DuPont, the fixing part 21 and the mounting part 13 are detachably connected, and the fixing part 21 has a light guide at least corresponding to the position of the bristles 22 and the light guide 15, so that light can be transmitted to the bristles 22 through the light guide and make them emit light. Preferably, the fixing part 21 is made of light-transmitting hard plastic material, that is, the light guide 15 transmits light to the fixing part 21, and the entire fixing part 21 can emit light. During use, these lights can illuminate the oral cavity from multiple angles and cover a wider range.

[0034] In this embodiment, all electronic components are installed in the handle 1. More specifically, the handle 1 is integrally formed and hollow inside. A mounting hole 18 is provided at the bottom of the handle 1, and a sealing element 19 is installed at the mounting hole 18. A light guide hole 14 for fixing the light guide element 15 is provided at the mounting part 13. During assembly, the control component 162 and the light-emitting component 161 are inserted through the mounting hole 18, and then the mounting hole 18 is sealed with the sealing element 19. The mounting part 13 is sealed by the light guide element 15, which can achieve a good waterproof effect.

[0035] Preferably, since the handle 1 is relatively long, in order to reduce light energy loss, the LED 164 should be as close as possible to the light guide 15. Since the light guide 15 is located at the upper end of the handle 1, the light-emitting component 161 adopts a long circuit board and extends upward to the light guide 15, so that the LED 164 is parallel and aligned with the light guide 15. Of course, a bracket 163 is also provided for fixing the light-emitting component 161 and the control component 162. In this way, after the bracket 163, the control component 162 and the light-emitting component 161 are assembled externally, they can be directly inserted into the handle 1 through the mounting hole 18, making the installation more convenient.

[0036] Preferably, the LED bead 164 includes at least one red LED bead and one blue LED bead. The red or blue LED bead can be lit individually, or both can be lit simultaneously. When there are multiple LED beads, each set of red LED beads and each set of blue LED beads are spaced apart. The mixed light emitted when the red and blue LED beads are lit simultaneously can satisfy the functions of inhibiting bacterial growth, repairing gums, and whitening teeth.

[0037] The toothbrush described in this utility model is used in the same way as an ordinary toothbrush. However, the light-emitting component 161 of this utility model can emit red and blue light separately, or emit red and blue light simultaneously. During use, the light can be manually switched according to the user's needs to achieve different light therapy effects. Of course, with the support of existing technology, a timer can be set in the controller to switch the light according to the time the toothbrush is turned on.

[0038] This embodiment describes the detachable method of the mounting part 13 and the brush head 2, referring to... Figure 3 ;

[0039] The fixing part 21 has an open slot 231 for accommodating the mounting part 13 on the side near the mounting part 13. The shape of the slot 231 is adapted to the mounting part 13. A locking block 232 is provided at the bottom of the slot 231. The bottom of the fixing part 21 has an opening 233 communicating with the slot 231, and a slot 234 is provided on both sides of the slot 231. The mounting part 13 has a slider 131 on both sides corresponding to the slot 234. The length of the slider 131 is adapted to the length of the slot 234. A locking hole 151 that cooperates with the slider 131 is provided at the end face of the light guide 15. The locking hole 151 is a blind hole, which can realize the light guiding function without affecting the overall sealing of the light guide 15.

[0040] Due to the cooperation of slider 131 and slot 234, brush head 2 cannot move horizontally relative to mounting part 13. Furthermore, due to the constraint of block 232 and slot 234, brush head 2 cannot move longitudinally relative to mounting part 13. Therefore, during use, brush head 2 and mounting part 13 are firmly connected together and will not affect normal use. Since mounting part 13 is thinner than connecting part 12 and gripping part 11, it will deform under a large external force. Moreover, block 232 and slot 234 are very small. Therefore, as long as mounting part 13 undergoes a small deformation, block 232 can disengage from slot 234. Under the continuous action of external force, slider 131 will slide out of slot 234, thereby enabling disassembly of brush head 2.

[0041] The new brush head 2 only needs to be aligned with the opening 233 of the fixing part 21 and the upper end of the mounting part 13, and the slot 234 and the slider 131 are aligned and slid down, so that the mounting part 13 enters the slot 231 and the slider 131 enters the slot 234. At the same time, the locking block 232 and the locking hole 151 are engaged to fix it. It should be noted that although the fixing part 21 is made of hard plastic, its hardness is relatively low. Therefore, during the installation process, the locking block 232 and the light guide 15 will abut against each other, causing the fixing part 21 to undergo a slight deformation to achieve smooth installation.

[0042] In addition, the handle 1 is also divided into several parts, including a grip part 11, a connecting part 12 at the upper end of the grip part 11, and a mounting part 13 at the upper end of the connecting part 12. The mounting part 13 is flat, which can reduce the volume of the brush head 2 after installation, making it no different from the volume of an existing ordinary toothbrush. However, this will create a step 17 between the mounting part 13 and the connecting part 12. Therefore, the fixing part 21 is provided with a clearance 235 corresponding to the step 17, which covers the step 17 and makes it more aesthetically pleasing.

[0043] Reference Figure 4The present invention relates to the specific distribution of the bristles 22, including an outer cylindrical bristle tuft 221, an inner flat bristle tuft 222 located within the outer cylindrical bristle tuft 221, an inner cylindrical bristle tuft 223 located between the upper and lower ends of the outer cylindrical bristle tuft 221 and the inner flat bristle tuft 222, and a soft rubber light guide element 224 located within the inner flat bristle tuft 222. Each bristle tuft is composed of multiple light-transmitting plastic fiber roots, specifically made of transparent endurance nylon filament (Tynex: 0900HA). NC410-6mil, Brand: DuPont. The tips of the 222 bristle tufts are rounded to prevent scratching teeth. The middle section uses a soft rubber light guide 224, which is shorter than all the bristle tufts. Its guiding effect is better than the bristle tufts; it is flexible, longitudinally flat, and can be deformed by lateral movement, also functioning as a brush. Specifically, the soft rubber light guide 224 is made of TPE (Thermoplastic Elastomer). Elastomer is a thermoplastic elastomer material with high strength, high resilience, and injection molding properties. It has a wide range of applications, is environmentally friendly, non-toxic, safe, and has excellent colorability. The soft rubber light guide component 224 and the fixing part 21 both have light-guiding properties and are integrally molded through a secondary injection molding process. A larger portion of the soft rubber light guide component 224 is embedded within the fixing part 21, while smaller, longitudinally segmented, flat portions protrude from the surface of the fixing part 21. Although the soft rubber light guide component 224 is made of soft rubber, it is ensured that it cannot detach from the fixing part 21. Several bristle implantation holes are provided on the surface of the fixing part 21, and bristle clusters are implanted into these holes one by one.

[0044] One embodiment of this utility model relating to the seal 19 is described below. Figure 5 The device includes a fixed base 191, with a sealing ring (not shown) between the fixed base 191 and the mounting hole 18 for sealing. The bottom surface of the fixed base 191 has a groove 192 for mounting a sealing cover 193. Preferably, the sealing cover 193 is flush with the groove 192. The fixed base 191 has a mounting cavity 194 and a movable connecting cavity 195. A charging interface 196 is installed in the mounting cavity 194 and is electrically connected to the control component 162. Of course, a battery (not shown) is installed inside the handle 1. The end face of the sealing cover 193 has a sealing bolt 1931 and a movable connector 1932. The sealing bolt 1931 is fixed in the movable connecting cavity 195, and the movable connector 1932 is used to block the charging interface 196.

[0045] Furthermore, the area of ​​the groove 192 is larger than the area of ​​the sealing cover 193, so that a latching position 197 is formed between the sealing cover 193 and the groove 192, making it convenient to open the sealing cover 193.

[0046] 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 illustrative 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. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0047] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A toothbrush with a light therapy effect, comprising a detachably connected handle (1) and a brush head (2), characterized in that: The upper end of the handle (1) is provided with a mounting part (13) for fixing the brush head (2). A light guide (15) is provided at the mounting part (13). An electrically connected light-emitting component (161) and a control component (162) are installed inside the handle (1). The light emitted by the light-emitting component (161) is transmitted to the brush head (2) through the light guide (15). The light-emitting component (161) includes an LED (164). The brush head (2) includes a fixing part (21) and bristles (22). Both the fixing part (21) and the bristles (22) are made of light-transmitting material. The fixing part (21) is detachably connected to the mounting part (13). The light transmitted by the light guide (15) is guided to the oral cavity through the entire brush head (2). The handle (1) includes a grip (11), the upper end of the grip (11) is provided with a connecting part (12), the upper end of the connecting part (12) is provided with a mounting part (13), the mounting part (13) is flat and a step (17) is formed between it and the connecting part (12); The fixing part (21) is provided with a clearance (235) at the position corresponding to the step (17).

2. The toothbrush with phototherapy effect according to claim 1, characterized in that: The fixing part (21) is made of light-transmitting hard plastic material. A soft plastic light guide part (224) is integrally formed on the fixing part (21) by secondary injection molding. The soft plastic light guide part (224) is a light-guiding flexible plastic and is located in the middle of several bristles (22).

3. A toothbrush with phototherapy effect according to claim 2, characterized in that: The fixing part (21) is provided with an open slot (231) for accommodating the mounting part (13) on the side near the mounting part (13), and a locking block (232) is provided at the bottom of the slot (231). The bottom of the fixing part (21) is provided with an opening (233) communicating with the slot (231), and locking slots (234) are provided on both sides of the slot (231). The mounting part (13) has sliders (131) on both sides of the slot (234) and a card hole (151) that cooperates with the card block (232) is provided at the end face of the light guide (15).

4. A toothbrush with phototherapy effect according to claim 2, characterized in that: The bristles (22) include an outer cylindrical bristle cluster (221), an inner flat bristle cluster (222) is provided inside the outer cylindrical bristle cluster (221), an inner cylindrical bristle cluster (223) is provided between the upper and lower ends of the outer cylindrical bristle cluster (221) and the inner flat bristle cluster (222), and a plurality of soft rubber light guides (224) are provided in the inner flat bristle cluster (222), wherein the soft rubber light guides (224) are longitudinally flat.

5. A toothbrush with phototherapy effect according to claim 1, characterized in that: The handle (1) is integrally formed and hollow inside. A mounting hole (18) is provided at the bottom of the handle (1). A sealing element (19) is installed at the mounting hole (18). A light guide hole (14) for fixing the light guide element (15) is provided at the mounting part (13).

6. A toothbrush with phototherapy effect according to claim 5, characterized in that: The sealing element (19) includes a fixing seat (191), and a groove (192) is provided on the bottom surface of the fixing seat (191). The groove (192) is used to install the sealing cover (193). The fixing seat (191) is provided with an installation cavity (194) and a movable connection cavity (195). A charging interface (196) is installed in the installation cavity (194). The end face of the sealing cover (193) is provided with a sealing bolt (1931) and a movable connector (1932). The sealing bolt (1931) is fixed in the movable connection cavity (195), and the movable connector (1932) is used to block the charging interface (196).

7. A toothbrush with phototherapy effect according to claim 1, characterized in that: The lamp beads (164) include several red light lamp beads and several blue light lamp beads. The red light lamp beads and blue light lamp beads can be lit individually or simultaneously. Each red light lamp bead and each blue light lamp bead are arranged alternately.

8. A toothbrush with phototherapy effect according to claim 1, characterized in that: The lamp bead (164) includes at least one red light lamp bead and at least one blue light lamp bead, and the red light lamp bead and the blue light lamp bead can be lit individually or simultaneously.

9. A toothbrush with phototherapy effect according to claim 4, characterized in that: The material of the soft rubber light guide component 2 (224) is TPE, and the material of the bristles (22) is transparent endurance nylon filament.