A head-mounted lighting device

Abstract

This utility model discloses a head-mounted light therapy device, including a light source, a brim, and a main support. The brim is mounted on the support, and the light source is located inside the support and behind the brim, emitting light towards the end face of the brim, causing the light-emitting surface of the brim to emit light in a downward and backward manner. Based on a hat, this device is portable, does not obstruct vision, does not interfere with glasses, provides uniform and soft illumination, fully illuminating the forehead, eyes, and face, with light efficiency close to natural light and excellent phototherapy effects. Compared to eye masks and glasses, it is more flexible; compared to desk lamps, it is more portable and requires less power. It achieves surface light emission through a diverging structure within the brim, saving costs and providing high light efficiency, while avoiding direct light into the eyes and reducing fatigue. During use, the light is redirected by the diverging structure before illuminating the face, ensuring effective illumination while protecting the eyes.

Description

Technical Field

[0001] This utility model relates to the field of health lighting, and in particular to a head-mounted lighting device. Background Technology

[0002] To prevent depression and myopia in adolescents, the government advocates that teenagers receive at least a certain amount of light exposure every day, usually 2 hours. The essence of light exposure to the forehead is that the retina receives light signals and activates the "light-brain-endocrine" regulatory pathway, thereby improving serotonin levels, stabilizing the biological clock, and reducing stress hormones. This mechanism is the core scientific basis for preventing depression. In practice, ensuring effective light exposure of the forehead and eyes under natural light while avoiding damage from strong light is the only way to maximize the benefits of "light exposure for heart protection".

[0003] However, due to limitations in outdoor activities, weather, and seasons, it is difficult to achieve sufficient daily sunlight exposure. Therefore, products that can increase the duration of sunlight exposure have emerged on the market, namely SAD (Self-Dose Ambient Light) lamps. There are roughly three types of existing SAD lamps: desk lamps, eye mask lamps, and glasses lamps. Desk lamp lamps are limited by the setting, requiring users to sit at a table and not leave. Moreover, SAD lamps are recommended for use in the morning or forenoon, which delays teenagers' morning departure time. Furthermore, because the light source of a desk lamp is far away, a sufficiently high wattage is required to ensure adequate brightness. Eye mask lamps restrict normal movement when worn, causing even more severe limitations. Therefore, neither of the above two types are suitable for practical use.

[0004] Compared to the two methods mentioned above, phototherapy lamps in the form of eyeglasses are more portable and have less impact on daily activities. However, these lamps also have various drawbacks. First, they block the eyes and interfere with the eyeglasses, affecting the daily activities of nearsighted users. More importantly, their illumination area is very small, usually a point or line light source, resulting in poor uniformity, greater glare, and discomfort. Furthermore, these lamps cannot reach the face and forehead, failing to achieve full-area illumination and thus having poor effectiveness. From the perspective of retinal imaging principles, the area formed after the light source enters the retina is too small, thus having a smaller effect.

[0005] Therefore, there is an urgent need for a flexible, portable, and comprehensive phototherapy lamp to overcome the shortcomings of existing products. Summary of the Invention

[0006] To address the aforementioned technical problems, this utility model provides a head-mounted light therapy device, including a light source device, a hat brim, and a main support frame for wearing the head. The hat brim is mounted on the main support frame, and the light source device is mounted on the main support frame and located behind the hat brim. The light source device faces the end face of the hat brim and emits light from the brim. This solution uses a hat as its base, allowing for simple headwearing. The advantages of a hat are its portability and the fact that the brim does not obstruct the view or interfere with glasses. The light source device brightens the entire hat brim, enabling the luminous surface of the brim to emit light from the entire surface. This not only provides more comprehensive illumination of the forehead, eyes, and face but also provides a more uniform and softer light, making it more comfortable to use. Because the entire luminous surface of the hat brim emits light, the large area of ​​illumination makes the user's light sensitivity more pronounced, resulting in a better phototherapy effect compared to a small light source. Furthermore, the light shines from top to bottom and from front to back, more closely resembling natural light, further enhancing the effect.

[0007] The technical solution of this utility model is implemented as follows: A head-mounted lighting device includes a light source, a brim, and a main support for wearing the head. The brim is mounted on the main support, and the light source is located inside the main support and behind the brim, with the light source facing the end face of the brim. The brim has a light-emitting surface facing downwards and backwards, and the light source is configured to emit light that brightens the brim and causes the light-emitting surface of the brim to emit light.

[0008] This solution uses a hat as its base, which can be worn simply by wearing it on the head. The advantages of a hat are that it is not only portable, but the brim will not obstruct the view in front or interfere with glasses. The light source device can brighten the entire brim, allowing the light-emitting surface of the brim to emit light. This not only provides more comprehensive illumination of the forehead, eyes, and face, but also provides a more even and softer light, making it more comfortable to use. Because the entire light-emitting surface of the brim emits light, the large area of ​​illumination makes the user's light sensitivity more obvious. Compared with small light sources, the light therapy effect is better. In addition, the light shines from top to bottom and from front to back, which is closer to natural light, further enhancing the effect.

[0009] Compared to existing technologies such as head-mounted eye masks and glasses, this solution offers greater flexibility in usage scenarios, avoids interference with nearsighted glasses, and does not affect daily activities. Compared to existing desk lamp technology, it is more portable and can be carried at any time. Furthermore, with the light source device positioned closer to the face, the power requirement of the light source device can be reduced. In addition, the lighting simulated by this solution is closer to natural lighting, with a more reasonable lighting area and direction, resulting in better lighting effects.

[0010] This solution uses a side-mounted light source to illuminate the brim, achieving surface illumination. This solution eliminates the need for excessive light sources, saving costs and providing higher light efficiency. Furthermore, it avoids direct light into the eyes, reducing eye strain.

[0011] Preferably, the main support has a mounting groove and a slot, the mounting groove and the slot are connected, the slot extends inward from the front surface of the main support, and the mounting groove is located at the inner end of the slot; the light source device is set in the mounting groove, and one end of the brim is inserted into the slot. The built-in light source device is effectively protected, and can also guide the light towards the face through the brim, avoiding direct light to the eyes and reducing eye fatigue during use.

[0012] Preferably, the main support includes an upper support and a lower support. The upper support includes a downwardly extending mounting portion and a forwardly extending upper extension portion. The lower support includes a forwardly extending lower extension portion. The light source device is disposed on the front surface of the mounting portion. A slot is formed between the upper extension portion and the lower extension portion. A mounting groove is formed behind the slot and in front of the mounting portion.

[0013] Preferably, the main support frame is curved, while the upper and lower extensions are flat and extend along the contour of the main support frame. The brim includes an insertion part, which is inserted into a slot and fixedly connected to the upper and lower extensions. A dovetail groove and dovetail protrusion structure are provided between the insertion part and the upper and / or lower extensions. Both the dovetail groove and the dovetail protrusion have corresponding curvatures, and the dovetail groove and dovetail protrusion are interlocked for limiting the position of the brim against the main support frame. The flat upper and lower extensions reduce their own volume while increasing the connection with the insertion part, ensuring the stability of the connection. The upper and lower extensions limit the upper and lower position of the brim, while the curved dovetail groove and dovetail protrusion can simultaneously limit the front-to-back and left-to-right position of the brim, as well as the positioning of the brim during installation.

[0014] Preferably, the lower surface of the mounting part has a downwardly protruding positioning ridge with an arc shape. A corresponding positioning groove is provided on the lower bracket, and the positioning ridge is positioned within the positioning groove. After the positioning ridge enters the positioning groove, the upper bracket and the lower bracket are fixed together by ultrasonic welding. The presence of the positioning ridge and the positioning groove enables rapid positioning and installation of the upper and lower brackets.

[0015] Preferably, the brim includes an insertion part and an action part. The insertion part is located at the rear end of the brim and is inserted horizontally into the main body support. The action part extends forward and downward from the front end of the insertion part.

[0016] Preferably, the angle of inclination of the active part relative to the vertical axis is 30-50°. This allows the active part to face the human face so that when the brim emits light, it shines onto the face.

[0017] As a preferred option, the brim has a three-dimensional curved structure. The three-dimensional curved brim has a certain degree of coverage, allowing the light from the brim to fully cover the face, resulting in better lighting effects.

[0018] Preferably, the brim includes a light guide plate configured to direct light from the light source device to the rear and lower part of the brim, causing the light-emitting surface to emit light from the side. The surface emission of the brim is achieved through the side-emitting effect of the light guide plate.

[0019] Preferably, the brim also includes a reflective film, which is disposed on the upper surface of the light guide plate. The reflective film prevents light from escaping from above the brim, concentrating the light onto the face and reducing light loss.

[0020] Preferably, the light guide plate is transparent and has several uniformly and densely distributed dot-like or line-like structures inside; these structures are formed by screen printing or laser sintering. When light emitted from the light source shines on the dot-like or line-like structures, the total internal reflection condition is broken, causing all the dot-like or line-like structures to emit light simultaneously, thus making the entire brim glow. With the help of the reflective film, the light is mainly emitted from the light-emitting surface of the lower surface of the brim, achieving surface-emitting light that shines towards the human face.

[0021] Preferably, the light source device includes a circuit board and several light-emitting elements, all of which are disposed on the circuit board.

[0022] Preferably, the circuit board is a strip-shaped flexible circuit board; the light emitter is a dynamic full-spectrum LED.

[0023] Preferably, the light source device includes an electrical connection part, and the main support has an interface, to which the electrical connection part is connected; the interface is configured to connect a power supply and / or a hand controller. The power supply is a portable power bank to ensure portability, and the hand controller and the portable power bank can be integrated together.

[0024] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows: This solution uses a hat as its base, which can be worn simply by wearing it on the head. The advantages of a hat are that it is not only portable, but the brim will not obstruct the view in front or interfere with glasses. The light source device can brighten the entire brim, allowing the light-emitting surface of the brim to emit light. This not only provides more comprehensive illumination of the forehead, eyes, and face, but also provides a more even and softer light, making it more comfortable to use. Because the entire light-emitting surface of the brim emits light, the large area of ​​illumination makes the user's light sensitivity more obvious. Compared with small light sources, the light therapy effect is better. In addition, the light shines from top to bottom and from front to back, which is closer to natural light, further enhancing the effect.

[0025] Compared to existing technologies such as head-mounted eye masks and glasses, this solution offers greater flexibility in usage scenarios, avoids interference with nearsighted glasses, and does not affect daily activities. Compared to existing desk lamp technology, it is more portable and can be carried at any time. Furthermore, with the light source device positioned closer to the face, the power requirement of the light source device can be reduced. In addition, the lighting simulated by this solution is closer to natural lighting, with a more reasonable lighting area and direction, resulting in better lighting effects.

[0026] This solution uses a side-mounted light source to illuminate the brim, achieving surface illumination. This solution eliminates the need for excessive light sources, saving costs and providing higher light efficiency. Furthermore, it avoids direct light into the eyes, reducing eye strain. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the device when worn in an embodiment of the present invention; Figure 2 This is a three-dimensional structural diagram of the device when it is worn in an embodiment of the present invention. Figure 1 The dashed lines represent the light rays emanating from the surface. Figure 3 This is a three-dimensional structural diagram of the device when it is worn in an embodiment of the present invention. Figure 2 The dashed lines represent the light rays emanating from the surface. Figure 4 This is a three-dimensional structural diagram of the device in the embodiment of the present invention. Figure 1 ; Figure 5 This is a three-dimensional structural diagram of the device in the embodiment of the present invention. Figure 2 ; Figure 6 This is a top view of the device in an embodiment of the present invention; Figure 7 This is a cross-sectional view of the device in an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the main support frame in an embodiment of the present invention; Figure 9 This is a cross-sectional view of the light source device installed on the main support in an embodiment of the present invention.

[0028] The reference numerals in the attached figures are as follows: light source device 1; circuit board 11; light-emitting body 12; brim 2; light-emitting surface 200; insertion part 2a; function part 2b; light guide plate 21; reflective film 22; main body support 3; mounting groove 31; slot 32; upper support 33; mounting part 331; upper extension part 332; lower support 34; lower extension part 342; interface 4; portable electronic control device 5; flexible cable 51; fixing strap 6; heat dissipation groove 7; avoidance slope 8; forehead pad 9; positioning protrusion 10; positioning groove 15. Detailed Implementation

[0029] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0031] In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] The specific implementation of this utility model is as follows: like Figure 1-9 As shown, this utility model provides a head-mounted lighting device, including a light source device 1, a brim 2, and a main support 3 for wearing. The brim 2 is mounted on the main support 3, and the light source device 1 is mounted on the brim 2 or the main support 3. The brim 2 has a light-emitting surface 200 facing downwards and backwards. The light source device 1 is configured to emit light that brightens the brim 2 and causes the light-emitting surface 200 of the brim 2 to emit light.

[0033] This solution uses a hat as a base, which can be worn on the head. The advantages of a hat are that it is not only portable, but the brim 2 will not obstruct the view in front or interfere with glasses. The light source device 1 can make the brim 2 brighter, so that the light-emitting surface 200 of the brim 2 can emit light from the surface. This not only can it illuminate the forehead, eyes and face more comprehensively, but it is also more uniform and soft, making it more comfortable to use. Since the light-emitting surface 200 of the brim 2 emits light from the whole, the large area of ​​light makes the user's light sensitivity more obvious. Compared with small light sources, the light therapy effect is better. In addition, the light shines from top to bottom and from front to back, which is closer to natural light, further enhancing the effect.

[0034] Compared to existing technologies such as head-mounted eye masks and glasses, this solution offers greater flexibility in usage scenarios, avoids interference with nearsighted glasses, and does not affect daily activities. Compared to existing desk lamp technology, it is more portable and can be carried at any time. Furthermore, since the light source device 1 is closer to the face, its power requirement is lower. In addition, the lighting simulated in this solution is closer to natural lighting, with a more reasonable lighting area and direction, resulting in better lighting effects.

[0035] In this scheme, the light-emitting surface 200 is the light-emitting surface 200 that ultimately emits light from the device, not the light-emitting surface 200 of the light source device 1; the light emission in surface emission refers to the light extending outward from the device, which includes not only direct emission of light, but also reflected light, refracted light, etc.

[0036] like Figure 1-3 As shown in Figures 7 and 8, the light source device 1 includes a circuit board 11 and several light emitters 12. The circuit board 11 is a flexible circuit board, and the light emitters 12 are dynamic full-spectrum LEDs, which are integrated into one unit. The light source device 1 also includes an electrical connection part. The main support 3 is provided with an interface 4, and the electrical connection part is connected to the interface 4. The interface 4 is used to connect a power supply and / or a hand controller. The power supply is a mobile power supply to ensure portability. In this embodiment, the hand controller and the mobile power supply can be integrated together to form a portable electronic control device 5. A flexible cable 51 is provided on it and plugged into the interface 4 to achieve electrical connection. When in use, the hand controller and the mobile power supply are easy to carry or place, and it is also convenient for the user to switch or adjust them. Of course, a rechargeable battery can also be built into the device, and it can be used by charging the battery through the interface.

[0037] like Figure 8 As shown, the main support 3 has an arc shape, and a fixing strap 6 is provided at the rear end of the left and right sides of the main support 3. The two ends of the fixing strap 6 are respectively connected to the two rear ends of the main support 3 to achieve a hat-like headwear effect. A forehead pad 9 is provided on the inner side of the main support 3 to improve the comfort when wearing the head.

[0038] like Figure 1-5As shown, the design of the brim 2 also affects the effect. Generally, the larger the area of ​​the brim 2, the larger the area of ​​the human face it covers. Under the same light intensity, the light perception is closer to natural sunlight, resulting in better anti-myopia and anti-depression effects. In this embodiment, the brim 2 includes an insertion part 2a and an action part 2b. The insertion part 2a is located at the rear end of the brim 2 and occupies a small proportion. The insertion part 2a is inserted horizontally into the main support 3 and connected to the main support 3. The action part 2b extends forward and downward from the front end of the insertion part 2a, and the tilt angle of the action part 2b relative to the vertical axis is 30-50°. In this embodiment, the tilt angle of the action part 2b is about 45°, so that the light-emitting surface 200 of the brim 2 can face the face, especially the forehead and eyes. The downward extension length of the action part 2b extends beyond the eyes. The width of the brim 2 is greater than the width of the main support 3 and also greater than the width of the human face, so that the illumination range of the light-emitting surface 200 is larger when it emits light, achieving full-area illumination. The brim 2 is a curved three-dimensional structure, and the curvature of the brim 2 tends to wrap around the face. In this embodiment, the outer contour of the brim 2 is roughly fan-shaped.

[0039] In this embodiment, as Figure 7As shown, the light source device 1 is located inside the main support 3 and behind the brim 2. The light source device 1 is adjacent to the end face of the brim 2 and faces the end face of the brim 2. Only one circuit board 11 is needed for the light source device 1. The brim 2 includes a light guide plate 21, which is configured to guide the light from the light source device 1 to the light guide plate 21 and make the light-emitting surface 200 form surface light emission. Specifically, the main support 3 has a mounting groove 31 and a slot 32. The mounting groove 31 communicates with the slot 32. The slot 32 extends inward from the front surface of the main support 3, and the mounting groove 31 is located at the inner end of the slot 32. The light source device 1 is placed in the mounting groove 31, and one end of the brim 2 is inserted into the slot 32. This solution achieves surface light emission of the brim 2 through the side light emission effect of the light guide plate 21. Specifically, the light guide plate 21 is existing technology and is generally flat or curved, used for... When light enters from the side end face of the light guide plate 21, it achieves side emission. The light guide plate 21 is transparent, and its interior is formed with many uniform and densely distributed dot-like structures or line structures through screen printing or laser sintering. In this embodiment, a dot-like structure is selected. When light encounters the dense and uniform dot-like structure, it can illuminate the entire light guide plate 21, achieving surface emission. Specifically, when light propagates inside the transparent light guide plate, it encounters these dot-like structures, which disrupts the original total internal reflection condition, causing these dot-like structures to emit light. The dense dot-like structures emit light simultaneously, making the entire brim illuminate. The dot-like structure can be formed by screen printing or laser engraving. In this embodiment, the light guide plate 21 is curved and three-dimensional, adapting to the shape of a conventional brim 2. The brim 2 also includes a reflective film 22, which is disposed on the upper surface of the light guide plate 21. The reflective film 22 prevents light from escaping from above the brim 2, concentrating the light onto the face and reducing light loss.

[0040] like Figure 1 As shown, since the light source device 1 will generate heat, and the light source device 1 is located inside the main support 3, a heat dissipation structure is provided on the main support 3 in order to ensure the user experience. The heat dissipation structure includes several heat dissipation grooves 7 distributed along the outline of the main support 3. At the same time, the upper part 23 of the main support 3 has a forward-inclined avoidance slope 8. The avoidance slope 8 is located behind the light source device and can be kept away from the user's head, thereby preventing the heat generated by the light source device 1 from being transferred to the user's forehead.

[0041] In terms of installation, such as Figure 7-9As shown, in order to facilitate the installation of the light source device 1 and the brim 2, the main support 3 is divided into two parts, including an upper support 33 and a lower support 34. The upper support 33 includes a downwardly extending mounting part 331 and a forwardly extending upper extension part 332. The lower support 34 includes a forwardly extending lower extension part 342. The light source device 1 is mounted on the mounting part 331 and located on the front surface of the mounting part 331. The slot 32 is formed between the upper extension part 332 and the lower extension part 342, and the mounting groove 31 is formed behind the slot 32 and in front of the mounting part 331.

[0042] Furthermore, In terms of installation, the main support 3 has an arc, and the upper extension 332 and the lower extension 342 are both flat and extend along the contour of the main support 3. The insertion part 2a of the brim 2 is inserted into the slot 32 and fixedly connected to the upper extension 332 and the lower extension 342. A dovetail groove and dovetail protrusion structure (not shown) are provided between the insertion part 2a and the upper extension 332 and the lower extension 342. The dovetail groove and the dovetail protrusion have corresponding arcs. The dovetail groove and the dovetail protrusion are inserted and matched to limit the position of the brim and the main support. The insertion part 2a is then glued to the upper extension 332 and the lower extension 342. The flat upper extension 332 and the lower extension 342 can reduce their own volume while increasing the connection with the insertion part 2a, ensuring the stability of the connection. The upper and lower extensions limit the upper and lower position of the brim 2, while the curved dovetail groove and the dovetail protrusion can simultaneously limit the front and back, left and right directions of the brim 2, as well as the positioning of the brim 2 during installation. The lower surface of the mounting part 331 is provided with a downward protruding positioning protrusion 10. The positioning protrusion 10 has an arc. A corresponding positioning groove 15 is provided on the lower bracket 34. The positioning protrusion 10 is set in the positioning groove 15. After the positioning protrusion 10 enters the positioning groove 15, the upper bracket 33 and the lower bracket 34 are fixed by ultrasonic welding. The presence of the positioning protrusion 10 and the positioning groove 15 enables the upper and lower brackets to be quickly positioned and installed.

[0043] Compared with other methods, the method in this embodiment not only avoids direct sunlight and provides softer light, but also has less light loss, higher light utilization, and requires less power from the light source device 1.

[0044] The core of this invention lies in brightening the brim 2 so that its light-emitting surface 200 emits light. In principle, this embodiment also provides a method to improve the light-emitting effect of a phototherapy machine. The phototherapy machine is constructed in the shape of a hat, and the light source device 1 in the phototherapy machine can brighten the entire brim 2. However, the purpose is not to make the entire brim 2 bright and emit light, but to make its inner light-emitting surface 200 emit light to illuminate the human face. Therefore, the outer side of the brim 2 is also treated to block light and prevent light leakage, such as by using a reflective film 22 or other light-blocking materials to be pasted on the outer side. Similarly, light-blocking treatment is performed on the contour end face of the brim 2, but not on the position of the brim 2 that receives light. This method is based on the form of a hat, increasing the area of ​​the light-emitting surface 200 while ensuring portability, thereby avoiding the defects existing in the prior art and improving the phototherapy effect.

[0045] This device employs a method for using a head-mounted lighting device. The method involves pre-mounting a light source device 1 onto a main support 3 for headwear, and installing a transparent brim 2 on the main support 3 in front of the light source device 1, with the light source device 1 facing the rear end of the brim 2. The brim 2 contains several uniformly and densely distributed diverging structures. The light emitted from the light source device 1 is the initial light, and the light emitted from the brim 2 is the active light. When the light source device 1 illuminates the end face of the brim 2, the initial light enters the brim 2 and encounters the diverging structures, causing all the diverging structures to emit light simultaneously, resulting in surface illumination of the brim 2. The active light changes direction compared to the initial light and illuminates the face downwards and backwards. Directly propagating light that hits the eyes causes greater damage and fatigue, while light that passes through the diverging structures is softer and causes less damage and fatigue when it reaches the face and eyes. This method avoids direct light into the eyes while still illuminating the face, further protecting the eyes while achieving the desired lighting effect.

[0046] The divergent structure refers to the dotted or line structure formed by screen printing or laser sintering; at the same time, a reflective film is set on the upper surface of the brim to reflect the light escaping from the upper surface of the brim.

Claims

1. A head-mounted lighting device, characterized in that: It includes a light source device, a brim, and a main support for wearing the head. The brim is set on the main support, and the light source device is set inside the main support and behind the brim. The light source device is set facing the end face of the brim. The brim has a light-emitting surface facing downward and backward. The light source device is configured to emit light to brighten the brim and make the light-emitting surface of the brim form surface light emission.

2. The head-mounted lighting device according to claim 1, characterized in that: The main support has a mounting groove and a slot. The mounting groove and the slot are connected. The slot extends inward from the front surface of the main support, and the mounting groove is located at the inner end of the slot. The light source device is set in the mounting groove, and one end of the brim is inserted into the slot.

3. The head-mounted lighting device according to claim 2, characterized in that: The main support includes an upper support and a lower support. The upper support includes a downwardly extending mounting portion and a forwardly extending upper extension portion. The lower support includes a forwardly extending lower extension portion. The light source device is disposed on the front surface of the mounting portion. A slot is formed between the upper extension portion and the lower extension portion. A mounting groove is formed behind the slot and in front of the mounting portion.

4. The head-mounted lighting device according to claim 3, characterized in that: The main support has an arc, and the upper and lower extensions are both flat and extend along the outline of the main support. The brim includes an insertion part, which is inserted into a slot and fixedly connected to the upper and lower extensions. A dovetail groove and a dovetail protrusion structure are provided between the insertion part and the upper and / or lower extensions. The dovetail groove and the dovetail protrusion have corresponding arcs. The dovetail groove and the dovetail protrusion are inserted and matched to limit the position of the brim and the main support.

5. The head-mounted lighting device according to claim 3, characterized in that: The lower surface of the mounting part is provided with a downward protruding positioning ridge. The positioning ridge has an arc shape and a corresponding positioning groove is provided on the lower bracket. The positioning ridge is set in the positioning groove. After the positioning ridge enters the positioning groove, the upper bracket and the lower bracket are fixed by ultrasonic welding.

6. The head-mounted lighting device according to claim 1, characterized in that: The brim includes an insertion part and a function part. The insertion part is located at the rear end of the brim and is inserted horizontally into the main body support. The active part extends forward and downward from the front end of the insertion part.

7. The head-mounted lighting device according to claim 6, characterized in that: The angle of inclination of the actuating part relative to the vertical axis is 30-50°.

8. The head-mounted lighting device according to claim 1, characterized in that: The brim has a three-dimensional curved structure.

9. The head-mounted lighting device according to claim 1, characterized in that: The brim includes a light guide plate, which is configured to direct light emitted from the light source device to the rear and lower part of the light source and to make the light-emitting surface emit light.

10. The head-mounted lighting device according to claim 9, characterized in that: The brim also includes a reflective film, which is set on the upper surface of the light guide plate.

11. The head-mounted illumination device according to claim 9, characterized in that: The light guide plate is transparent and has several uniformly and densely distributed dot-like or line-like structures inside; the dot-like or line-like structures are formed by screen printing or laser sintering.

12. The head-mounted lighting device according to claim 1, characterized in that: The light source device includes a circuit board and several light-emitting elements, all of which are mounted on the circuit board.

13. The head-mounted lighting device according to claim 12, characterized in that: The circuit board is a strip-shaped flexible circuit board; the light source is a dynamic full-spectrum LED.

14. The head-mounted lighting device according to claim 1, characterized in that: The light source device includes an electrical connection part, and an interface is provided on the main support. The electrical connection part is connected to the interface; the interface is configured to connect to a power supply and / or a hand controller.

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