Handheld optical device

Abstract

The invention provides a handheld optical device, comprising: a housing, the housing comprising a main housing and an auxiliary housing, the main housing being provided with an air inlet; the auxiliary shell comprises a first part, the first part covers at least part of the air inlet, and the first part is provided with a first side outer edge part; the inner surface of the first part and the outer surface of the main shell are arranged at an interval to form a first airflow channel; the first side outer edge part and the main shell are arranged at an interval to form a first airflow opening; the second airflow channel is formed in the outer surface of the shell and extends towards the end of the shell, and the second airflow channel is provided with an open second airflow opening located in the outer surface of the shell; and the second airflow channel is communicated with the first airflow channel, so that airflow in the external environment flows to the first airflow channel through the second airflow channel and then enters the air inlet.

Description

Technical Field

[0001] This invention relates to the field of optical technology, and more particularly to a handheld optical device. Background Technology

[0002] Handheld optical devices, such as beauty devices and hair removal devices, have a light source component inside their casing. During operation, this component generates considerable heat. Current technology often incorporates vents in the casing to allow airflow exchange between the internal and external environments, carrying away the heat. However, improper hand grip during use can partially or completely block these vents. This blockage directly impacts the efficiency of airflow exchange, leading to abnormal internal temperatures and reduced heat dissipation. Summary of the Invention

[0003] The purpose of this invention is to provide a handheld optical device whose air inlet is not easily blocked.

[0004] To achieve the above-mentioned objectives, the present invention provides a handheld optical device, characterized in that it comprises: The housing includes a main housing and a secondary housing, and the main housing has an air inlet. The sub-shell includes a first part that covers at least a portion of the air inlet and has a first outer edge. The inner surface of the first part is spaced apart from the outer surface of the main shell to form a first airflow channel. The first outer edge is spaced apart from the main shell to form a first airflow opening, which connects the first airflow channel to the external environment. The optical device also includes: The second airflow channel is formed on the outer surface of the housing and extends toward the end of the housing, and the second airflow channel has an open second airflow opening on the outer surface of the housing; The second airflow channel is connected to the first airflow channel so that airflow from the external environment flows through the second airflow channel to the first airflow channel and then enters the air inlet.

[0005] As a further improvement of one embodiment of the present invention, the main housing includes a first region and a second region, wherein the outer surface of the first region is recessed relative to the outer surface of the second region to form a groove, and the groove forms the second airflow channel.

[0006] As a further improvement of one embodiment of the present invention, the air inlet is located in the first region.

[0007] As a further improvement of one embodiment of the present invention, the sub-shell is placed in the groove; the outer surface of the sub-shell is flush with the outer surface of the second region, or concave relative to the outer surface of the second region.

[0008] As a further improvement of one embodiment of the present invention, the sub-shell is detachably connected to the main shell.

[0009] As a further improvement of one embodiment of the present invention, the main housing includes a first region and a second region, the outer surface of the first region is recessed relative to the outer surface of the second region to form a groove, the air inlet is opened in the first region, the groove includes a side groove wall, the sub-housing covers the first region, and the edge of the sub-housing and the side groove wall are spaced apart to form a second airflow channel.

[0010] As a further improvement of one embodiment of the present invention, the main housing and the secondary housing are integrally formed.

[0011] As a further improvement of one embodiment of the present invention, the outer surface of the sub-shell is flush with the outer surface of the second region.

[0012] As a further improvement of one embodiment of the present invention, the size of the second airflow opening near the air inlet is larger than the size near the end of the housing.

[0013] As a further improvement of one embodiment of the present invention, the housing is columnar, the housing has a front end with a light outlet, and the air inlet is located in the area close to the front end.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application provides a second airflow channel extending toward the end of the housing, which increases the path for gas in the external environment to enter the cavity. Even if the user holds the device in an unexpected position and blocks the air inlet area, external gas can still enter the cavity to achieve heat dissipation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the handheld optical device in use according to the first embodiment of the present invention; Figure 2 for Figure 1 A cross-sectional schematic diagram of the handheld optical device shown; Figure 3 for Figure 1 Another cross-sectional schematic diagram of the handheld optical device shown; Figure 4 for Figure 1 A schematic diagram of the sub-casing of the handheld optical device shown; Figure 5 for Figure 1 A cross-sectional schematic diagram of an alternative embodiment of the first embodiment shown; Figure 6 for Figure 1 A cross-sectional schematic diagram of another alternative embodiment of the first embodiment shown; Figure 7 This is a schematic diagram of a handheld optical device according to the second embodiment of the present invention; Figure 8 This is a schematic diagram of the handheld optical device in use according to the third embodiment of the present invention; Figure 9 for Figure 8 A cross-sectional schematic diagram of the handheld optical device shown; Figure 10 for Figure 8 The diagram shows an embodiment of the secondary housing. Figure 11 for Figure 8 A schematic diagram of another embodiment of the sub-shell shown; Figure 12 This is a cross-sectional schematic diagram of a handheld optical device according to the fourth embodiment of the present invention; Figure 13 for Figure 12 A schematic diagram of an alternative embodiment of the fourth embodiment is shown; Figure 14 This is a schematic diagram of the fifth embodiment of the present invention. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of the present invention.

[0017] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one unit or feature relative to another unit or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0018] This application provides a handheld optical device. The handheld optical device can be a hair removal device, a skin rejuvenation device, an ultrasonic device, a radio frequency device, etc.

[0019] In the specific embodiments provided in this application, a hair removal device is used as an example for detailed description and explanation.

[0020] See Figures 1 to 14 Handheld optical devices according to various embodiments provided in this application.

[0021] See Figures 1 to 4 This is a handheld optical device according to a first embodiment of the present invention. The handheld optical device includes a housing. A cavity S is formed within the housing.

[0022] The handheld optical device may also include a light source assembly 12. The light source assembly 12 is installed within the cavity S. The housing may have a light outlet 11, and a light-transmitting crystal (e.g., sapphire) may be installed at the light outlet 11 to allow light to pass through the light source assembly 12 and to deliver a cooling medium to the skin via the light-transmitting crystal. Light from the light source assembly 12 can be emitted through the light-transmitting crystal at the light outlet 11. Different functions can be achieved by setting parameters such as the wavelength and emission time of the light source assembly 12.

[0023] When the handheld optical device is a hair removal device, the light source assembly 12 may include a xenon lamp. The xenon lamp emits light of a specific wavelength that can penetrate skin tissue to achieve hair removal. Because the xenon lamp requires high-voltage excitation to release high energy instantaneously, a large amount of heat accumulates inside the device and is transferred to the user's skin via heat conduction. Therefore, the hair removal device often incorporates a semiconductor cooling chip to work with a light-transmitting crystal. The crystal allows the xenon lamp light to pass through while simultaneously transferring the refrigerant from the semiconductor cooling chip. During use, the surface of the crystal directly contacts the skin, cooling it and reducing the burning sensation caused by high-temperature transfer. The semiconductor cooling chip has a cold end and a hot end. The cold end contacts the crystal to transfer the refrigerant, while the hot end generates heat, further increasing the temperature inside the cavity S. The temperature inside the cavity S can become excessively high due to the combined heat from the xenon lamp and the hot end, and if a certain threshold temperature is exceeded, the device may malfunction, stop operating, or damage components. Therefore, such handheld optical devices require a robust heat dissipation system to cool the inside of the cavity S.

[0024] The housing is also provided with a vent 14. The vent 14 connects the cavity S inside the housing with the external environment.

[0025] In the specific embodiments provided in this application, the vent 14 is an air inlet. Hereinafter, vent 14 will be used to refer to the air inlet. Of course, in other embodiments, the vent 14 may also be configured as an air outlet 141.

[0026] The housing may also contain heat dissipation elements 13. Heat dissipation elements 13 may include heat dissipation fins, heat dissipation fans, and other components.

[0027] Gas from the external environment can enter the cavity S through the vent 14 and then be discharged from the cavity S to the external environment through the outlet 141. During the gas flow, heat inside the cavity S can be carried away, preventing components such as the light source assembly 12 from overheating.

[0028] In one embodiment, the housing has a circumferential surface 15. A vent 14 may be provided on the circumferential surface 15. The housing may also have an end face 16, on which an outlet 141 may be provided.

[0029] The shell can be columnar. Specifically, it can be cylindrical, prismatic, or irregularly columnar. Here, "columnar" means the shell extends primarily in a single direction. The shell does not have two distinctly angled sections. The direction of extension of the shell is its length direction, L.

[0030] Wherein, the circumferential direction C is the direction around the length direction L.

[0031] In this embodiment, the optical device may further include a second airflow channel 23, which is formed on the outer surface of the housing and extends toward the end of the housing. The second airflow channel 23 may have an open second airflow opening 24 located on the outer surface of the housing. The second airflow opening 24 connects the second airflow channel 23 to the external environment, thereby connecting the second airflow channel 23 to the external environment and the cavity S. It can be understood that the second airflow channel 23 may directly connect to the interior of the cavity S or indirectly connect to the interior of the cavity S.

[0032] The second airflow passage 23 can extend substantially along the length L of the shell. Similarly, the second airflow opening 24 also extends substantially along the length L of the shell.

[0033] External ambient gas can enter the cavity S directly through the vent 14, or it can enter the cavity S through the second airflow channel 23. The second airflow channel 23 increases the path for external gas to enter the interior of the housing.

[0034] In one embodiment, the housing includes a main housing 1 and a secondary housing 2. A cavity S can be formed within the main housing 1. The secondary housing 2 is connected to the outside of the main housing 1. A vent 14 is formed in the main housing 1. Specifically, the vent 14 is formed on the circumferential surface 15 of the main housing 1.

[0035] The sub-shell 2 includes a first portion 21. The first portion 21 covers at least a portion of the vent 14.

[0036] In one embodiment, the first portion 21 may cover at least half of the area of ​​the vent 14. Preferably, the first portion 21 covers the entire area of ​​the vent 14. In this way, when a user observes the handheld optical device from the outside, only a small number of vents 14 can be seen, or even none at all, thereby improving the overall visual appearance of the handheld optical device and thus enhancing the user experience.

[0037] The housing is provided with a first airflow channel 18. The first airflow channel 18 is connected to the vent 14, allowing gas from the external environment to enter the vent 14.

[0038] In this embodiment, the inner surface of the first part 21 and the outer surface of the main housing 1 are spaced apart to form a first airflow channel 18.

[0039] The first part 21 has a first outer edge portion. The first outer edge portion is spaced apart from the main housing 1 to form a first airflow opening 261. The first airflow opening 261 connects the first airflow channel 18 with the external environment.

[0040] The handheld optical device also includes a second airflow channel 23. The second airflow channel 23 is disposed in the housing. The second airflow channel 23 is formed on the outer surface of the housing and extends toward the end of the housing. The second airflow channel 23 has a second airflow opening 24 that is open on the outer surface of the housing.

[0041] The second airflow channel 23 is connected to the first airflow channel 18 so that the gas in the external environment can flow through the second airflow channel 23 to the first airflow channel 18 and then enter the vent 14. In this embodiment, the second airflow channel 23 is connected to the first airflow channel 18, and at least one end of the second airflow channel 23 can extend to the end of the housing.

[0042] When the user holds the handheld optical device normally, their hand will not cover the first airflow channel 18. External ambient gas will sequentially pass through the first airflow opening 261, the first airflow channel 18, and the vent 14 into the housing. However, when the user holds the device in an unintended position, even if their hand covers the first airflow channel 18 and blocks the second airflow opening 24 in that area, due to the relatively long extension of the second airflow opening 24, external ambient gas can still enter the second airflow channel 23 through the second airflow opening 24, then enter the first airflow channel 18, and finally enter the housing through the vent 14.

[0043] In summary, since the second airflow channel 23 is designed to extend to the end of the housing, the second airflow channel 23 increases the area for the entry of external ambient gas. Even if the user holds the handheld optical device in an unexpected position, the gas entry area will not be completely blocked, thus ensuring the heat dissipation effect.

[0044] In this embodiment, the second airflow channel 23 is formed on the outer surface of the main housing 1.

[0045] The main housing 1 includes a first region 151 and a second region 152. The outer surface of the first region 151 is recessed relative to the outer surface of the second region 152 to form a groove 17. The groove 17 forms a second airflow channel 23.

[0046] One or both ends of the groove 17 may extend to the end of the housing, thereby allowing the second airflow passage 23 to extend to the end of the housing.

[0047] Thus, during the fabrication of the main housing 1, the second airflow channel 23 can be directly formed on the outer surface of the main housing 1. No additional components are required, resulting in a simple overall structure.

[0048] In one embodiment, the height of the first airflow channel 18 is greater than 1 mm along the radial direction R of the housing. That is, the distance between the inner surface of the sub-housing 2 and the outer surface of the main housing 1 is greater than 1 mm along the radial direction R of the housing. This ensures both air intake volume and heat dissipation efficiency.

[0049] Furthermore, in one embodiment, the vent 14 is located in the first region 151.

[0050] The groove 17 may include a bottom groove wall 172. The vent 14 may be formed in the bottom groove wall 172 of the groove 17. In this way, the second airflow channel 23 can be directly connected to the vent 14, realizing the rapid flow of external gas.

[0051] Furthermore, in one embodiment of the present invention, the sub-shell 2 is placed in the groove 17.

[0052] In this embodiment, the outer surface of the sub-shell 2 is flush with the outer surface of the second region 152. The sub-shell 2 is configured in an arc shape. This improves the aesthetics of the appearance and the comfort of the user's grip.

[0053] Of course, see Figure 5 In the embodiment shown, the sub-shell 2 can also be planar. The outer surface of the sub-shell 2 can also be recessed relative to the outer surface of the second region 152, thus providing better shielding of the vent 14.

[0054] In this embodiment, the sub-shell 2 may include a main body 25 and a flange 26 that folds toward the outer surface of the main shell 1.

[0055] The inner surface of the main body 25 is opposite to the outer surface of the main housing 1, and the two are spaced apart to form a first airflow channel 18. Specifically, the inner surface of the main body 25 is opposite to the bottom groove wall 172 of the groove 17, and the two are spaced apart.

[0056] The flange 26 may be located within the groove 17. The edge of the flange 26 may form the edge of the sub-shell 2. The flange 26 may be positioned opposite and spaced apart from the side groove wall 171, with the gap between them forming part of the second airflow channel 23.

[0057] It is understood that, along the circumferential direction C, the distance between the edge of the secondary housing 2 and the main housing 1 is greater than 1 mm. That is, the width of the second airflow channel 23 at the corresponding position of the vent 14 is greater than 1 mm. In this way, the air intake volume can be guaranteed.

[0058] The flange 26 can abut against the outer surface of the main housing 1 to support the sub-housing 2, thus ensuring a stable connection between the sub-housing 2 and the main housing 1. An opening can be formed on the flange 26 to create a first airflow opening 261. There can be one or multiple first airflow openings 261.

[0059] Of course, the sub-shell 2 may not have the flange 26 and may only have the main body 25. The edge of the main body 25 is the edge of the sub-shell 2. The sub-shell 2 can be supported and connected to the main shell 1 by providing other elements on its inner surface. The gap between the edge of the main body 25 and the outer surface of the main shell 1 can directly form the first airflow opening 261.

[0060] In one embodiment, the total area of ​​the first airflow opening 261 is S1, and the total area of ​​the vent 14 covered by the secondary housing 2 can be S2. S1 and S2 are basically equal, thus ensuring air intake and heat dissipation.

[0061] Furthermore, in one embodiment, the sub-shell 2 is detachably connected to the main shell 1.

[0062] In this embodiment, the sub-shell 2 can be snapped onto the main shell 1. The inner surface of the sub-shell 2 may be provided with claws 27, and the main shell 1 may be provided with a slot 19 that engages with the claws 27. The slot 19 may be located in the first region 151. The engagement of the claws 27 and the slot 19 allows for a stable connection between the sub-shell 2 and the main shell 1. When the user needs to clean the vent 14 or the first airflow channel 18, the sub-shell 2 can be removed. This facilitates maintenance of the handheld optical device.

[0063] Furthermore, in one embodiment, along the length direction L of the main housing 1, the vent 14 is disposed in the area of ​​the main housing 1 near the front end in two-thirds of the region.

[0064] In this embodiment, the front end of the main housing 1 is provided with a light emission port 11, and the opposite end is the rear end. The light emission port 11 can also be provided on the circumferential surface 15 of the main housing.

[0065] The two-thirds region of the main housing 1 near the front end can be understood as the region measured along the length direction L from the front end to two-thirds of the length.

[0066] Handheld optical devices also include buttons ( Figure 8Button 3 (as shown). This button is used to control the operation of the handheld optical device. The button is located in the middle of the housing, such as the middle third area. When using the handheld optical device, the user usually holds it in the lower middle part, near the rear end.

[0067] At this point, the user's thumb can directly contact and control the buttons, which is ergonomic. Therefore, the vent 14 is located in the area near the front two-thirds of the front. When the user holds and uses the handheld optical device normally, the hand is usually below the vent 14, and the area of ​​the vent 14 is not easily blocked. Thus, the gas can flow directly from the position near the vent 14, resulting in good heat dissipation.

[0068] In this embodiment, the length of the second airflow channel 23 can be greater than half the length of the housing. Preferably, the second airflow channel 23 can extend continuously from the front end of the housing to the rear end of the housing. It can be understood that the longer the extension length of the second airflow channel 23, the less likely the user is to completely cover the second airflow channel 23, and the higher the heat dissipation stability.

[0069] Furthermore, in one embodiment of this application, the heat dissipation element 13 includes a fluid drive member 131. The fluid drive member 131 has a fluid opening 132.

[0070] The fluid drive component 131 can be a fan. When the vent 14 is an air inlet, the fluid drive component 131 assists in drawing fluid from the external environment into the cavity S. At this time, the fluid opening 132 is an air inlet.

[0071] The fluid opening 132 is positioned close to the vent 14. This allows airflow to pass through quickly, increasing the airflow rate.

[0072] In this embodiment, at least a portion of the vent 14 is positioned opposite to the fluid opening 132, allowing airflow to flow directly between the vent 14 and the fluid opening 132. The fluid drive 131 can better drive the gas to flow rapidly, resulting in good heat dissipation.

[0073] See Figure 7 This is a handheld optical device according to the second embodiment of this application.

[0074] The main difference between the handheld optical device of this embodiment and the handheld optical device of the first embodiment lies in the structure of the housing.

[0075] In this embodiment, the main housing 1 includes a first region 151 and a second region 152. The outer surface of the first region 151 is recessed relative to the outer surface of the second region 152 to form a groove 17. A vent 14 is disposed in the first region 151.

[0076] The groove 17 includes a side groove wall 171. The sub-shell 2 covers the first region 151. A portion forming a second airflow channel 23 is provided between the edge of the sub-shell 2 and the side groove wall 171.

[0077] In this embodiment, the sub-shell 2 extends along the length direction L of the main shell 1. The groove 17 also extends along the length direction L of the main shell 1. Both the sub-shell 2 and the groove 17 can extend from one end of the main shell 1 to the other end.

[0078] The gap between the edge of the sub-shell 2 and the side groove wall 171 is greater than 1 mm. That is, the width of the second airflow opening 24 is greater than 1 mm. In this way, the gas entry speed and heat dissipation efficiency can be guaranteed.

[0079] In this embodiment, the main housing 1 and the secondary housing 2 are integrally formed. The outer surface of the secondary housing 2 is flush with the outer surface of the second region 152. Thus, visually, the housing only has the second airflow channel 23, which is more aesthetically pleasing and provides a higher level of user comfort.

[0080] Furthermore, in this embodiment, the size of the second airflow opening 24 near the vent 14 is larger than the size near the end of the housing.

[0081] The size of the second airflow opening 24 can gradually decrease from near the vent 14 towards the end. When the size of the second airflow opening 24 decreases to a certain width, it no longer changes and extends to the end of the housing at that size.

[0082] Since the hand does not block the second airflow opening 24 near the vent 14 when the device is held normally, the gas in the external environment mainly enters the first airflow channel 18 through the second airflow opening 24 near the vent 14. Therefore, making the size of the second airflow opening 24 larger at this location facilitates the entry of a larger flow of gas, thereby improving heat dissipation efficiency.

[0083] See Figures 8 to 10 This is a handheld optical device according to the third embodiment of this application.

[0084] The difference between this embodiment and the first embodiment lies in the configuration of the housing.

[0085] In this embodiment, the edge of the sub-shell 2 is spaced apart from the main shell 1 along the circumferential direction C to form a second airflow channel 23.

[0086] Similar to the first embodiment, a vent 14 is provided on the circumferential surface 15 of the main housing 1. The circumferential surface 15 of the main housing 1 may include a first region 151 and a second region 152. The vent 14 is provided in the first region 151.

[0087] The sub-shell 2 includes a first portion 21 that covers the vent 14. The sub-shell 2 also includes a second portion 22 connected to the first portion 21. The second portion 22 also covers the outer side of the main shell 1 and extends from the first portion 21 toward the end of the main shell 1.

[0088] The second part 22 has a second side edge portion, and a gap C is left between the second side edge portion and the main housing 1 in the circumferential direction to form an airflow channel.

[0089] In this embodiment, the outer surface of the first region 151 is recessed relative to the outer surface of the second region 152, forming a groove 17. The sub-shell 2 is installed within the groove 17. The edge of the sub-shell 2 can be placed within the groove 17.

[0090] See Figure 10 The design of the first part 21 of the sub-shell 2 can be basically the same as that of the first embodiment. A second part 22 extending towards both ends is provided on both sides of the first part 21. The second part 22 may include a main body 25 and a flange 26 folded from the main body 25 towards the main shell 1. Therefore, the second airflow channel 23 can extend towards both ends of the shell. Specifically, the second airflow channel 23 can extend to both ends of the shell.

[0091] The flange 26 is spaced apart from the side wall 171 of the groove 17. The flange 26, the side wall 171, and the bottom wall 172 together define the second airflow channel 23. The second airflow channel 24 is open on the opposite side of the bottom wall 172, forming a second airflow opening 24.

[0092] The height of the flange 26 in the first part 21 may be less than the height of the flange in the second part 22, so as to form a first airflow opening 261 for gas to enter the first airflow channel. The flange 26 in the second part 22 abuts against the bottom groove wall 172 to provide support for the sub-shell 2.

[0093] Of course, the first part 21 may not have a flange, and the edge of the main body 25 can directly form a first airflow opening 261 between the bottom groove wall 172.

[0094] Or, such as Figure 11 As shown, the flange 26 at the first part 2 can also directly open multiple first airflow openings 261.

[0095] Similar to the third embodiment, the size of the second airflow opening 24 near the vent 14 region is larger than the size of the second airflow opening 24 near the end of the housing.

[0096] The size of the second airflow opening 24 can gradually decrease from the area near the vent 14 towards the end. When the size of the second airflow opening 24 decreases to a certain size, it extends towards the end at that size. This ensures both air intake volume and heat dissipation efficiency.

[0097] In this embodiment, the sub-shell 2 can be an axisymmetric structure. In the circumferential direction C, gaps can be left between the edges of both sides of the sub-shell 2 and the main shell 1 to form second airflow channels 23. It can be understood that the handheld optical device of this embodiment has two second airflow channels 23. The two second airflow channels 23 are symmetrically arranged. This increases the air intake and improves heat dissipation efficiency.

[0098] See Figure 12 This is a handheld optical device according to the fourth embodiment of this application.

[0099] The main difference between the handheld optical device in this embodiment and the handheld optical device in the third embodiment lies in the design of the housing.

[0100] In this embodiment, the edge of the sub-shell 2 and the main shell 1 are provided with a second airflow channel 23 at a radial distance R.

[0101] The first region 151 of the main housing 1 may be recessed relative to the second region 152. The edge of the sub-housing 2 may be within the second region 152. A gap is left between the edge of the sub-housing 2 and the outer surface of the main housing 1 along the radial direction R to form a second airflow channel 23. Specifically, a gap is left between the edge of the sub-housing 2 and the outer surface of the second region 152 to form the second airflow channel 23.

[0102] The width of the second airflow channel 23 along the radial direction R can be greater than 1 mm to ensure heat dissipation efficiency.

[0103] Of course, the first region 151 of the main housing 1 may not be recessed relative to the second region 152. A gap is left between the edge of the secondary housing 2 and the outer surface of the main housing 1 to form a second airflow channel 23.

[0104] In this embodiment, the sub-shell 2 has an arc surface. (See also...) Figure 13 The secondary shell 2 can also be designed as a planar shape.

[0105] See Figure 14 This is a handheld optical device according to the fifth embodiment of this application.

[0106] The main difference between the handheld optical device in this embodiment and the handheld optical device in the third embodiment lies in the design of the sub-shell 2.

[0107] In this embodiment, similar to the third embodiment, the sub-shell 2 includes a first portion 21 and a second portion 22. However, the second portion 22 is provided only on one side of the first portion 21. The second portion 22 extends from the first portion 21 toward the rear end of the main shell 1. The second airflow channel 23 extends from the vent 14 region toward the rear end of the main shell 1.

[0108] In this embodiment, the second airflow channel 23 may include two symmetrical first sub-channels 231, which extend substantially along the length direction L. The second airflow channel 23 also includes a second sub-channel 232 connecting the two first sub-channels 231. Thus, the second airflow channel 23 forms a continuous airflow channel, which includes sub-channels extending in different directions. This further reduces the possibility of the second airflow channel 23 being completely blocked, resulting in better heat dissipation stability.

[0109] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. 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.

[0110] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A handheld optical device, characterized in that, include: The housing includes a main housing and a secondary housing, and the main housing has an air inlet. The sub-shell includes a first part that covers at least a portion of the air inlet and has a first outer edge. The inner surface of the first part is spaced apart from the outer surface of the main shell to form a first airflow channel. The first outer edge is spaced apart from the main shell to form a first airflow opening, which connects the first airflow channel to the external environment. The optical device also includes: The second airflow channel is formed on the outer surface of the housing and extends toward the end of the housing, and the second airflow channel has an open second airflow opening on the outer surface of the housing; The second airflow channel is connected to the first airflow channel so that airflow from the external environment flows through the second airflow channel to the first airflow channel and then enters the air inlet.

2. The handheld optical device according to claim 1, characterized in that, The main housing includes a first region and a second region. The outer surface of the first region is recessed relative to the outer surface of the second region to form a groove, and the groove forms the second airflow channel.

3. The handheld optical device according to claim 2, characterized in that, The air intake is located in the first area.

4. The handheld optical device according to claim 3, characterized in that, The sub-shell is placed within the groove; the outer surface of the sub-shell is flush with the outer surface of the second region, or recessed relative to the outer surface of the second region.

5. The handheld optical device according to claim 4, characterized in that, The sub-shell is detachably connected to the main shell.

6. The handheld optical device according to claim 1, characterized in that, The main housing includes a first region and a second region. The outer surface of the first region is recessed relative to the outer surface of the second region to form a groove. The air inlet is opened in the first region. The groove includes a side groove wall. The sub-housing covers the first region. The edge of the sub-housing and the side groove wall are spaced apart to form a second airflow channel.

7. The handheld optical device as described in claim 6, characterized in that, The main shell and the secondary shell are integrally formed.

8. The handheld optical device as described in claim 6, characterized in that, The outer surface of the sub-shell is flush with the outer surface of the second region.

9. The handheld optical device as described in claim 6, characterized in that, The size of the second airflow opening near the air inlet is larger than the size near the end of the housing.

10. The handheld optical device as described in any one of claims 1 to 9, characterized in that, The housing is cylindrical and has a front end with a light outlet. The air inlet is located in the area of ​​the two-thirds of the front end.

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