Lens unit and nail lamp

Abstract

The lens unit comprises a first lens part and a second lens part, the first lens part is provided with a plurality of first small lenses which are arranged at intervals, each first small lens is provided with a first cambered surface and a first plane which are opposite to each other, and the second lens part is provided with a second cambered surface and a second plane which are opposite to each other. Wherein the second lens part is provided with a plurality of second small lenses which are arranged at intervals, and each second small lens is provided with a second cambered surface and a second plane which are opposite to each other; wherein the first lens portion and the second lens portion are mounted in a snap-in manner such that the first plane of the first lenslet and the second plane of the second lenslet are attached to each other, the first lenslets and the second lenslets are arranged so that the positions of the first lenslets correspond to the positions of the second lenslets in the thickness direction of the lens unit.

Description

Technical Field

[0001] The utility model relates to a nail art device, in particular to a lens unit and a nail lamp. Background Art

[0002] The current nail lamp directly arranges a plurality of lamp beads on the shell. After these lamp beads are lit, the nail art space of the shell is filled with ultraviolet light. When the user puts the whole hand or fingertips into the nail art space of the shell, the ultraviolet light generated by these lamp beads can not only irradiate the nails, but also irradiate the skin, resulting in an obvious burning sensation on the skin, which affects the user experience. Moreover, when the skin is irradiated by excessive ultraviolet light, it is easy to cause skin damage and there is a risk of cancer in severe cases. Summary of the Utility Model

[0003] An object of the utility model is to provide a lens unit and a nail lamp. A lens unit is arranged in the light-emitting path of the light source of the nail lamp, and the lens of the lens unit converges the light generated by the light source to form a light spot in the nail art space of the shell of the nail lamp. In this way, when the fingertips of the user are placed in the nail art space of the shell, the light spot can be located on the nails, avoiding the skin around the nails being irradiated by the light generated by the light source. In this way, the nail lamp can not only effectively utilize the energy of the light source, but also avoid damaging the skin around the nails.

[0004] An object of the utility model is to provide a lens unit and a nail lamp. The lens unit adopts a split scheme, that is, the lens unit includes an independent first lens part and a second lens part, and the two form the lens unit after being buckled. In this way, on the one hand, it is beneficial to reduce the technical difficulty and manufacturing cost of the lens unit. On the other hand, it is beneficial to reduce the thickness dimensions of the first lens part and the second lens part. In this way, the internal shrinkage and deformation of the first lens part and the second lens part can be avoided, which is beneficial to maintaining the surface shape of the first arc surface and the first plane of the first small lens of the first lens part and beneficial to maintaining the surface shape of the second arc surface and the second plane of the second small lens of the second lens part, thus ensuring the unchanged optical performance of the lens unit.

[0005] According to one aspect of the utility model, the utility model provides a lens unit, which comprises:

[0006] A first lens part, wherein the first lens part has a plurality of spaced-apart first small lenses, and each of the first small lenses has a relative first arc surface and a first plane; and

[0007] A second lens part, wherein the second lens part has a plurality of second small lenses spaced from each other, and each of the second small lenses has a corresponding second arc surface and a second plane, and the first lens part and the second lens part are installed in a buckled manner with the first plane of the first small lens and the second plane of the second small lens in contact with each other, so that the positions of each of the first small lenses and the positions of each of the second small lenses correspond in the thickness direction of the lens unit.

[0008] According to an embodiment of the present invention, the first lens part includes four of the first small lenses, and correspondingly, the second lens part includes four of the second small lenses.

[0009] According to an embodiment of the present invention, along a direction perpendicular to the extending direction of the lens unit, the position of at least one of the first small lenses of the first lens part is misaligned with the positions of the other first small lenses.

[0010] According to an embodiment of the present invention, one end of the first lens part has at least one first insertion hole, and the other end has at least one first insertion post, wherein one end of the second lens part has at least one second insertion post, and the other end has at least one second insertion hole, and the first insertion post of the first lens part is inserted into the second insertion hole of the second lens part, and the second insertion post of the second lens part is inserted into the first insertion hole of the first lens part.

[0011] In another aspect of the present invention, the present invention further provides a nail lamp, which includes:

[0012] A plurality of light sources;

[0013] A lens unit, wherein the lens unit includes a plurality of lenses; and

[0014] A housing, wherein the housing has a nail art space, a fingertip access channel, and a plurality of light-emitting channels, the fingertip access channel communicates with the nail art space at the front of the nail art space, and each of the light-emitting channels communicates with the nail art space at the top of the nail art space, and each of the light sources is respectively arranged on the incident side of each of the lenses, and the exit side of each of the lenses respectively corresponds to each of the light-emitting channels of the housing.

[0015] According to an embodiment of the present utility model, the lens unit includes a first lens portion and a second lens portion. The first lens portion has a plurality of first small lenses spaced from each other. Each of the first small lenses has a first arc surface and a first plane opposite to each other. The second lens portion has a plurality of second small lenses spaced from each other. Each of the second small lenses has a second arc surface and a second plane opposite to each other. Wherein the first lens portion and the second lens portion are installed in a butted manner with the first plane of the first small lens and the second plane of the second small lens being attached to each other, so that the positions of each of the first small lenses and the positions of each of the second small lenses correspond in the thickness direction of the lens unit for forming each of the lenses.

[0016] According to an embodiment of the present utility model, the lens unit includes four of the lenses.

[0017] According to an embodiment of the present utility model, the first lens portion includes four of the first small lenses. Correspondingly, the second lens portion includes four of the second small lenses.

[0018] According to an embodiment of the present utility model, the four lenses of the lens unit are integrally formed.

[0019] According to an embodiment of the present utility model, along the thickness direction of the nail lamp, the position of at least one of the lenses is misaligned with the positions of the other lenses.

[0020] According to an embodiment of the present utility model, along the direction perpendicular to the extending direction of the lens unit, the position of at least one of the first small lenses of the first lens portion is misaligned with the positions of the other first small lenses.

[0021] According to an embodiment of the present utility model, one end of the first lens portion has at least one first insertion hole, and the other end has at least one first insertion post. Wherein one end of the second lens portion has at least one second insertion post, and the other end has at least one second insertion hole. Wherein the first insertion post of the first lens portion is inserted into the second insertion hole of the second lens portion, and the second insertion post of the second lens portion is inserted into the first insertion hole of the first lens portion.

[0022] According to an embodiment of the present utility model, the nail lamp includes a main circuit board and an assembly body, wherein each of the light sources is respectively mounted on the main circuit board. The assembly body has a plurality of through holes, the main circuit board is disposed on the top of the assembly body, and each of the light sources is suspended by the main circuit board at the top opening of the through holes of the assembly body. The lens unit is disposed at the bottom of the assembly body and holds each of the lenses at the bottom opening of the through holes of the assembly body. The assembly body is mounted on the housing.

[0023] According to an embodiment of the present utility model, each of the lenses of the lens unit respectively closes the bottom opening of the through holes of the assembly body.

[0024] According to an embodiment of the present utility model, the housing includes a first housing and a second housing and has a receiving cavity. The first housing and the second housing are mounted to each other, and the receiving cavity of the housing is formed between the first housing and the second housing. The first housing forms the nail art space and the fingertip access channel of the housing, and the light exit channel of the housing is formed in the first housing. The assembly body is mounted on the first housing, and the assembly body, the lens unit and the main circuit board are received in the receiving cavity of the housing.

[0025] According to an embodiment of the present utility model, the first housing includes an inner cylinder and a panel extending around from the front side of the inner cylinder. The second housing includes an outer cylinder and a rear cover extending inward from the rear side of the outer cylinder. The panel and the front side of the outer cylinder are mounted to each other, and the rear cover and the rear side of the inner cylinder are mounted to each other to form the receiving cavity of the housing between the first housing and the second housing.

[0026] According to an embodiment of the present utility model, the nail lamp includes a plurality of buckle assemblies. Each of the buckle assemblies respectively includes a first buckle body and a second buckle body. At least one of the first buckle bodies is respectively provided on the rear side of the inner cylinder and the panel, and at least one of the second buckle bodies is respectively provided on the front side of the outer cylinder and the rear cover. The first buckle body provided on the rear side of the inner cylinder and the second buckle body provided on the rear cover are buckled to each other, and the first buckle body provided on the panel and the second buckle body provided on the front side of the outer cylinder are buckled to each other to mount the first housing and the second housing.

[0027] According to an embodiment of the present utility model, the first shell includes at least one assembly part, the bottom and the front side of the assembly part are respectively connected to the inner cylinder and the panel, the top of the assembly part forms an assembly post above the inner cylinder and a plug post at the rear side of the panel respectively, wherein the assembly body has at least one assembly groove and at least one plug hole, and the assembly post of the assembly part is assembled in the assembly groove of the assembly body, and the plug post of the assembly part is inserted into the plug hole of the assembly body.

[0028] According to an embodiment of the present utility model, the first shell includes two such assembly parts, and the two assembly parts are respectively located at opposite ends of the first shell, wherein opposite ends of the assembly body respectively have an assembly groove and a plug hole, and the assembly posts of each of the assembly parts are respectively assembled in the respective assembly grooves of the assembly body, and the plug posts of each of the assembly parts are respectively inserted into the respective plug holes of the assembly body.

[0029] According to an embodiment of the present utility model, the light source includes two lamp beads, and the two lamp beads are arranged along the thickness direction of the nail lamp.

[0030] According to an embodiment of the present utility model, the nail lamp includes a battery and a charging terminal, and the battery and the charging terminal are respectively connected to the main circuit board.

[0031] According to an embodiment of the present utility model, the nail lamp includes a detection unit, the detection unit is connected to the main circuit board, the detection unit includes a transmitting part and a receiving part corresponding in height, the transmitting part and the receiving part are respectively arranged on the shell, and the transmitting part and the receiving part are located on opposite sides of the nail space of the shell. Description of the Drawings

[0032] Figure 1 is a perspective schematic diagram of a nail lamp from one perspective according to a preferred embodiment of the present utility model.

[0033] Figure 2 is a perspective schematic diagram of the nail lamp from another perspective according to the above preferred embodiment of the present utility model.

[0034] Figure 3 is a sectional schematic diagram of the nail lamp in one direction according to the above preferred embodiment of the present utility model.

[0035] Figure 4 is a sectional schematic diagram of the nail lamp in another direction according to the above preferred embodiment of the present utility model.

[0036] Figure 5 It is an exploded schematic view of one perspective of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0037] Figure 6 It is an exploded schematic view of another perspective of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0038] Figure 7 It is a three-dimensional schematic view of one perspective of a lens unit of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0039] Figure 8 It is a three-dimensional schematic view of another perspective of the lens unit of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0040] Figure 9 It is an exploded schematic view of one perspective of the lens unit of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0041] Figure 10 It is an exploded schematic view of another perspective of the lens unit of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0042] Figure 11 It is a three-dimensional schematic view of one perspective of a nail lamp according to another preferred embodiment of the present utility model.

[0043] It is a three-dimensional schematic view of another perspective of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0044] Figure 12 It is an exploded schematic view of one perspective of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0045] It is an exploded schematic view of another perspective of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0046] Figure 13 It is an exploded schematic view of another perspective of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0047] It is a cross-sectional schematic view of a partial position of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0048] Figure 14 is an enlarged view of the partial position.

[0049] Figure 15It is a cross-sectional schematic view of another partial position of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0050] It is Figure 16 an enlarged view of a partial position.

[0051] It is a cross-sectional schematic view of another partial position of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0052] Figure 17 It is an enlarged view of a partial position.

[0053] Figure 16 It is a three-dimensional schematic view of a perspective of a partial position of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0054] It is a three-dimensional schematic view of another perspective of the above-mentioned partial position of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0055] Figure 18 It is a three-dimensional schematic view of a perspective of a lens unit of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0056] It is a three-dimensional schematic view of another perspective of the lens unit of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0057] Figure 19 It is an exploded schematic view of a perspective of the lens unit of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0058] It is an exploded schematic view of another perspective of the lens unit of the nail lamp according to the above-mentioned preferred embodiment of the present utility model.

[0059] Figure 18 It is a cross-sectional schematic view of the lens unit of the nail lamp according to the above-mentioned preferred embodiment of the present utility model. Detailed implementation manners

[0060] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components set forth in the following description or illustrated in the following figures. The present invention is capable of other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and variations thereof herein is intended to cover the items and their equivalents set forth below, as well as additional items. Unless otherwise specified or limited, the terms "mount", "connect", "support" and "couple" and variations thereof are used broadly and cover direct mounting and indirect mounting, connection, support and coupling. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings.

[0061] Furthermore, on the first hand, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second hand, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0062] Refer to the specification of this utility model A nail art lamp according to a preferred embodiment of the present invention will be disclosed and explained in the following description, wherein the nail art lamp includes a shell 10 and at least one light source component 20 disposed in the shell 10.

[0063] Specifically, the housing 10 has a manicure space 101 and a fingertip access passage 102 communicating with the manicure space 101. The light source assembly 20 is disposed in the housing 10 in a manner that it is located above the manicure space 101 of the housing 10. The light source assembly 20 includes a light source 21 and an optical lens 22 located on the light-emitting path of the light source 21. When the light source 21 is lit to emit light, the optical lens 22 is used to converge the light emitted by the light source 21 and form a light spot below the manicure space 101 of the housing 10. After the user's fingertip is placed into the manicure space 101 of the housing 10 through the fingertip access passage 102 of the housing 10, the light spot generated by the light source assembly 20 can accurately irradiate the nail, so that the light-curing gel applied on the nail is cured. In this way, the manicure lamp can prevent the light spot generated by the light source assembly 20 from irradiating the skin around the nail to protect the skin.

[0064] In the Figure 20 In this specific example of the manicure lamp of the present utility model shown in the attached

[0065] To hold the optical lens 22 on the light-emitting path of the light source 21, in the In this specific example of the manicure lamp of the present utility model shown in the attached

[0066] In the Figure 21In this specific example of the nail lamp of the present utility model shown, the number of the perforations 31 of the assembly 30 is four, and the light sources 21 of each of the light source assemblies 20 are respectively arranged at the positions of the respective top openings 32 of the assembly 30, and the optical lenses 22 of each of the light source assemblies 20 are respectively arranged at the positions of the respective bottom openings 33 of the assembly 30.

[0067] Preferably, the nail lamp includes a main circuit board 40, and the light sources 21 are respectively mounted on the main circuit board 40. The main circuit board 40 is arranged at the top of the assembly 30. In this way, the main circuit board 40 can respectively arrange the light sources 21 at the positions of the respective top openings 32 of the assembly 30, and the main circuit board 40 closes the top openings 32 of the assembly 30. In this way, when electric energy is supplied to the light sources 21 through the main circuit board 40, the light sources 21 respectively emit light, and the main circuit board 40 prevents the light from leaking through the positions of the top openings 32 of the assembly 30.

[0068] More preferably, the light source 21 includes two lamp beads 211, and the two lamp beads 211 are mounted on the main circuit board 40 at intervals along the thickness direction of the nail lamp. In this way, after the two lamp beads 211 are lit and emit light, the optical lens 22 is used to converge the light emitted by the two lamp beads 211 into an elliptical or racetrack-shaped light spot to match the shape of the user's nail.

[0069] Refer to the attached In the figure, the optical lenses 22 of these light source assemblies 20 respectively include an upper half portion 221 and a lower half portion 222, and the upper half portion 221 and the lower half portion 222 are installed in a snap-on manner. Among them, the upper half portions 221 of these optical lenses 22 are integrally formed to form a first lens portion 23, and the lower half portions 222 of these optical lenses 22 are integrally formed to form a second lens portion 24. The first lens portion 23 and the second lens portion 24 are installed in a snap-on manner to form a lens unit 200.

[0070] In the nail lamp of the present utility model, by allowing the upper half 221 of the optical lens 22 of these light source components 20 to be integrally formed into the first lens part 23, allowing the lower half 222 of the optical lens 22 of these light source components 20 to be integrally formed into the second lens part 24, and mounting the first lens part 23 and the second lens part 24 in a snap-on manner, not only can the optical lens 22 be manufactured conveniently and efficiently, but also an optical lens 22 with a thicker thickness can be manufactured and the optical performance can be prevented from being affected by deformation of the optical lens 22. At the same time, it is convenient to mount the optical lens 22 at the bottom of the assembly 30 to improve the assembly efficiency of the nail lamp.

[0071] Optionally, in other examples of the nail lamp of the present utility model, the optical lenses 22 of these light source components 20 may also be integrally formed.

[0072] Continue to refer to the attached Figure 20 , the housing 10 includes a first shell 11, the first shell 11 forms the nail space 101 and the fingertip access channel 102 of the housing 10, and the first shell 11 has at least one shell hole 110, the shell hole 110 communicates with the nail space 101 above the first shell 11, wherein the assembly 30 is mounted on the first shell 11 in such a way that the position of the optical lens 22 corresponds to the position of the shell hole 110 of the first shell 11, so that the light source component 20 is located above the nail space 101 of the housing 10.

[0073] It is worth mentioning that the installation method of the assembly 30 and the first shell 11 is not limited in the nail lamp of the present utility model. For example, in this specific example of the nail lamp of the present utility model shown in the attached , the assembly 30 and the first shell 11 can be installed by screws.

[0074] Preferably, the shell 10 also includes a second shell 12, which is installed on the outside of the first shell 11, and the shell 10 forms a receiving cavity 13 between the first shell 11 and the second shell 12. The light source component 20, the assembly 30 and the main circuit board 40 are received in the receiving cavity 13 of the shell 10, so that the light source component 20, the assembly 30 and the main circuit board 40 are hidden by the first shell 11 and the second shell 12, so that the light source component 20, the assembly 30 and the main circuit board 40 are visually invisible. In this way, on the one hand, the first shell 11 and the second shell 12 can protect the light source component 20, the assembly 30 and the main circuit board 40, and on the other hand, the first shell 11 and the second shell 12 form the appearance of the nail lamp.

[0075] Reference Attachment Figure 22 and The nail lamp further includes a battery 50, which is connected to the main circuit board 40. The battery 50 can supply power to the light source 21 through the main circuit board 40, so that the light source 21 emits light.

[0076] Preferably, the battery 50 is mounted on the first shell 11 , so that, on the one hand, the relative positions of the battery 50 and the main circuit board 40 are fixed, and on the other hand, the battery 50 is accommodated in the accommodating cavity 13 of the shell 10 .

[0077] Preferably, the battery 50 is a rechargeable battery. In order to facilitate charging the battery 50, the nail art lamp of the present invention further includes a charging terminal 60, which is connected to the main circuit board 40. Electric energy can be charged into the battery 50 through the charging terminal 60. Figure 23 In the specific example of the nail art lamp of the present invention shown, the charging terminal 60 can be a Type-C interface, or the charging terminal 60 can be a mechanism including a Type-C interface.

[0078] Reference Attachment The charging terminal 60 is located on the side of the nail art lamp facing away from the fingertip access channel 102 of the housing 10 and below the nail art space 101. This ensures that when the battery 50 is charged via the charging terminal 60, the charging cable does not affect the normal use of the nail art lamp. Specifically, the charging terminal 60 is mounted below the first housing 11, so that the positions of the charging terminal 60 and the main circuit board 40 are relatively fixed.

[0079] Continue to refer to the attached Figure 24 and , the manicure lamp further includes a control unit 70, the control unit 70 is installed on the assembly 30, and the control unit 70 is connected to the main circuit board 40, and the user can control the working state of the manicure lamp through the control unit 70.

[0080] Continue to refer to the appendix Figure 25 , and Figure 26 , the manicure lamp further includes a detection unit 80, the detection unit 80 is connected to the main circuit board 40, wherein the detection unit 80 is used to detect whether the user places the fingertip in the manicure space 101 of the housing 10. If the detection unit 80 detects that the user places the fingertip in the manicure space 101 of the housing 10, the light source 21 of the manicure lamp can be automatically lit.

[0081] Specifically, the detection unit 80 includes a transmitting part 81 and a receiving part 82. The transmitting part 81 and the receiving part 82 are arranged on the housing 10 in a manner that they are located on opposite sides of the manicure space 101 of the housing 10, and the position of the transmitting part 81 corresponds to the position of the receiving part 82, so as to allow the receiving part 82 to receive the signal, such as an optical signal, emitted by the transmitting part 81. After the transmitting part 81 emits a signal, if the receiving part 82 can receive the signal, it means that there is no obstacle blocking between the transmitting part 81 and the receiving part 82. At this time, the detection result of the detection unit 80 is that the manicure space 101 of the housing 10 is not placed with a fingertip. If the receiving part 82 cannot receive the signal, it means that there is an obstacle between the transmitting part 81 and the receiving part 82. At this time, the detection result of the detection unit 80 is that a fingertip is placed in the manicure space 101 of the housing 10.

[0082] Appendix shows a manicure lamp according to another preferred embodiment of the present invention, wherein the manicure lamp includes a housing 10, a plurality of light sources 21 and a lens unit 200.

[0083] Specifically, the housing 10 has a manicure space 101, a fingertip access channel 102 and a plurality of light-emitting channels 103. The fingertip access channel 102 communicates with the manicure space 101 at the front of the manicure space 101, and each of the light-emitting channels 103 communicates with the manicure space 101 at the top of the manicure space 101. The lens unit 200 includes a plurality of lenses 223. The exit side of each lens 223 corresponds to each of the light-emitting channels 103 of the housing 10, and each light source 21 corresponds to the incident side of each lens 223.

[0084] When each of the light sources 21 is lit to emit light, the light emitted by each of the light sources 21 can form a plurality of light spots in the nail beauty space 101 of the housing 10 after being converged by each of the lenses 223 of the lens unit 200 and passing through each of the light exit channels 103 of the housing 10. The shape and size of the light spots match the shape and size of the user's nails. After the user places the fingertips in the nail beauty space 101 of the housing 10 through the fingertip access channel 102 of the housing 10, each light spot can be accurately located on each nail to cure the light-curing gel applied on each nail bracket, avoiding the skin around the nails from being irradiated. In this way, the nail lamp can not only effectively utilize the energy of the light source 21, but also avoid damaging the skin around the nails.

[0085] In the Figure 27 specific example of the nail lamp of the present utility model shown in the attached figure, the number of the light sources 21 is four, and the number of the lenses 223 of the lens unit 200 is also four. The positions of the four light sources 21 and the positions of the four lenses 223 correspond one by one. In this way, when the four light sources 21 are all lit to emit light, the nail lamp can form four light spots in the nail beauty space 101 of the housing 10 to cure the light-curing gel applied on the nails of the index finger, middle finger, ring finger and little finger respectively. Preferably, along the thickness direction of the nail lamp, the position of at least one of the lenses 223 is displaced from the positions of the other lenses 223, and correspondingly, the position of at least one of the light sources 21 is displaced from the positions of the other light sources 21. In this way, the positions of the four light spots formed by the nail lamp in the nail beauty space 101 of the housing 10 can respectively match the nails of the index finger, middle finger, ring finger and little finger.

[0086] Refer to the attached , Figure 28 and , the manicure lamp further includes an assembly body 30 and a main circuit board 40. The assembly body 30 has a plurality of through holes 31. Each of the through holes 31 forms a top opening 32 at the top of the assembly body 30 and a bottom opening 33 at the bottom of the assembly body 30. Each of the light sources 21 is respectively mounted on the main circuit board 40. The main circuit board 40 is disposed at the top of the assembly body 30, and each of the light sources 21 is suspended by the main circuit board 40 at the top opening 32 of each of the through holes 31 of the assembly body 30. The lens unit 200 is disposed at the bottom of the assembly body 30 and holds each of the lenses 223 at the bottom opening 33 of each of the through holes 31 of the assembly body 30. In this way, the assembly body 30 arranges each of the light sources 21 on the incident side of each of the lenses 223 of the lens unit 200. The assembly body 30 is mounted on the housing 10, so that the exit side of each of the lenses 223 of the lens unit 200 can respectively correspond to each of the light exit channels 103 of the housing 10.

[0087] Preferably, the main circuit board 40 closes the top opening 32 of each of the through holes 31 of the assembly body 30, so that the light generated when the light source 21 is lit can be prevented from leaking through the top opening 32 of the through hole 31 of the assembly body 30, which is beneficial to improving the energy utilization rate of the light source 21.

[0088] Preferably, the light source 21 includes two lamp beads 211. The two lamp beads 211 are mounted on the main circuit board 40 at intervals along the thickness direction of the manicure lamp. In this way, after the two lamp beads 211 are lit and emit light, the lens 223 is used to converge the light emitted by the two lamp beads 211 into an elliptical or racetrack-shaped light spot to match the shape of the user's nail.

[0089] Preferably, each of the lenses 223 of the lens unit 200 closes the bottom opening 302 of each of the through holes 31 of the assembly body 30, so that the light generated when the light source 21 is lit can be converged by the lens 223, which is beneficial to forming a light spot with clear edges in the manicure space 101 of the housing 10 to improve the energy utilization rate of the light source 21.

[0090] Continue to refer to the appendix Figures 1 to 10, the housing 10 includes a first housing 11, a second housing 12, and has a receiving cavity 13. The first housing 11 and the second housing 12 are installed with each other, and the receiving cavity 13 of the housing 10 is formed between the first housing 11 and the second housing 12. The first housing 11 forms the manicure space 101 and the fingertip access passage 102 of the housing 10. Each of the light exit channels 103 of the housing 10 is formed in the first housing 11, wherein the assembly 30 is installed in the first housing 11, and the assembly 30, the lens unit 200, and the main circuit board 40 are received in the receiving cavity 13 of the housing 10. In this way, the assembly 30, the lens unit 200, and the main circuit board 40 are hidden, making the assembly 30, the lens unit 200, and the main circuit board 40 visually invisible. That is to say, by hiding the assembly 30, the lens unit 200, and the main circuit board 40 between the first housing 11 and the second housing 12, on the one hand, the first housing 11 and the second housing 12 of the housing 10 can protect the assembly 30, the lens unit 200, and the main circuit board 40, and on the other hand, the first housing 11 and the second housing 12 of the housing 10 form the general appearance of the manicure lamp.

[0091] Further, the first housing 11 includes an inner cylinder 111 and a panel 112 extending around from the front side of the inner cylinder 111. The second housing 12 includes an outer cylinder 121 and a rear cover 122 extending inward from the rear side of the outer cylinder 121. The outer sides of the panel 112 and the outer cylinder 121 are installed with each other, and the rear sides of the rear cover 122 and the inner cylinder 111 are installed with each other to form the receiving cavity 13 of the housing 10 between the first housing 11 and the second housing 12 for receiving the assembly 30, the lens unit 200, and the main circuit board 40.

[0092] That is to say, there is no splicing seam at the position of the fingertip access passage 102 of the housing 10. The fingertip access passage 102 of the housing 10 is jointly defined by the integrally formed inner cylinder 111 and the panel 112, which not only helps to increase the beauty of the manicure lamp, but also makes the user feel more comfortable when the palm is placed on the position of the fingertip access passage 102 of the housing 10.

[0093] Preferably, the rear cover 122 of the second housing 12 has a rear cover hole 1221, and the shape and size of the rear cover hole 1221 of the rear cover 122 match the shape and size of the rear side of the inner cylinder 111 of the first housing 11. The edge defining the rear cover hole 1221 of the rear cover 122 and the edge of the rear side of the inner cylinder 111 can abut against each other to allow the second housing 12 to expose the rear opening of the inner cylinder 111 of the first housing 11. In other words, the nail art space 101 of the housing 10 communicates the front space and the rear space of the housing 10.

[0094] In order to install the first housing 11 and the second housing 12 without affecting the appearance of the nail lamp, with reference to the attached , the nail lamp further includes a plurality of buckle assemblies 90. Each buckle assembly 90 includes a first buckle body 91 and a second buckle body 92 respectively. At least one first buckle body 91 is provided on the rear side of the inner cylinder 111 and the panel 112 of the first housing 11 respectively. At least one second buckle body 92 is provided on the outer cylinder 121 and the rear cover 122 of the second housing 12 respectively. The first buckle body 91 provided on the rear side of the inner cylinder 111 and the second buckle body 92 provided on the rear cover 122 are buckled with each other. The first buckle body 91 provided on the panel 112 and the second buckle body 92 provided on the front side of the outer cylinder 121 are buckled with each other to install the first housing 11 and the second housing 12. With such a structure as described above, the first housing 11 and the second housing 12 can be reliably installed without screws.

[0095] In the attached Figures 1 to 10 In this specific example of the nail lamp of the present invention shown, two first buckle bodies 91 are respectively provided above and below the rear side of the inner cylinder 111, and one first buckle body 91 is provided on each of the opposite sides of the panel 112. Correspondingly, two second buckle bodies 92 are respectively provided above and below the edge defining the rear cover hole 1221 of the rear cover 122, and one second buckle body 92 is provided on each of the opposite sides of the front side of the outer cylinder 121. In this way, the six first buckle bodies 91 and the six second buckle bodies 92 are buckled with each other, and the first housing 11 and the second housing 12 can be reliably installed without screws.

[0096] With reference to the attached 、 Figures 1 to 10 and , the first housing 11 includes at least one assembly portion 113. The bottom and the front side of the assembly portion 113 are respectively connected to the inner cylinder 111 and the panel 112, and a mounting post 1131 is formed above the inner cylinder 111 and a plug post 1132 is formed at the rear side of the panel 112 at the top of the assembly portion 113 respectively. By connecting the bottom and the front side of the assembly portion 113 to the inner cylinder 111 and the panel 112 respectively, the assembly portion 113 can strengthen the connection relationship between the inner cylinder 111 and the panel 112 and prevent the first housing 11 from deforming.

[0097] The assembly 30 has at least one assembly groove 34 and at least one plug hole 35. When the assembly 30 is installed on the first housing 11, the mounting post 1131 of the assembly portion 113 is assembled into the assembly groove 34 of the assembly 30, and the plug post 1132 of the assembly portion 113 is inserted into the plug hole 35 of the assembly 30. In this way, not only can the installation of the assembly 30 and the first housing 11 be realized, but also the positions of the lenses 223 of the lens unit 200 can be ensured to correspond to the positions of the light-emitting channels 103 of the housing 10. Preferably, after the assembly 30 is installed on the first housing 11, screws can be used to lock the assembly 30 to the first housing 11 to prevent the assembly 30 from moving relative to the first housing 11.

[0098] Refer to the appendix Figures 1 to 10 , and Figures 5 to 10 , the first housing 11 includes two such assembly portions 113, and the two assembly portions 113 are respectively located at opposite ends of the first housing 11. Correspondingly, one assembly groove 34 and one plug hole 35 are respectively provided at opposite ends of the assembly 30. When the assembly 30 is installed on the first housing 11, the mounting posts 1131 of the respective assembly portions 113 are respectively assembled into the respective assembly grooves 34 of the assembly 30, and the plug posts 1132 of the respective assembly portions 113 are respectively inserted into the respective plug holes 35 of the assembly 30. In this way, the assembly 30 can be installed in the correct position to prevent the lenses 221 of the lens unit 200 from being misaligned with the light-emitting channels 103 of the housing 10.

[0099] Continue to refer to the appendix and Figures 1 to 6, the manicure lamp further includes a battery 50 and a charging terminal 60, the battery 50 and the charging terminal 60 are respectively connected to the main circuit board 40, wherein electrical energy can be supplemented to the battery 50 through the charging terminal 60, and the electrical energy stored in the battery 50 can be supplied to each of the light sources 21 to turn on each of the light sources 21 so that each of the light sources 21 emits light.

[0100] Specifically, the battery 50 is installed in the inner cylinder 111 of the first housing 11, and the battery 50 is received in the receiving cavity 13 of the housing 10. Since the main circuit board 40 is disposed on the top of the assembly 30, and the assembly 30 is installed on the first housing 11, the relative positions of the battery 50 and the main circuit board 40 are fixed. In this way, it is beneficial to ensure the reliability of the connection relationship between the battery 50 and the main circuit board 40.

[0101] The rear cover 122 of the second housing 12 has a terminal perforation 1222, the charging terminal 60 is installed at the rear side of the inner cylinder 111 of the first housing 11, and the charging terminal 60 extends into the terminal perforation 1222 of the rear cover 122 of the second housing 12. Since the main circuit board 40 is disposed on the top of the assembly 30, and the assembly 30 is installed on the first housing 11, the relative positions of the charging terminal 60 and the main circuit board 40 are fixed. In this way, it is beneficial to ensure the reliability of the connection relationship between the charging terminal 60 and the main circuit board 40.

[0102] Preferably, the charging terminal 60 is installed below the rear side of the inner cylinder 111 of the first housing 11. In this way, when charging the battery 50 through the charging terminal 60, the charging cable will not affect the normal use of the manicure lamp.

[0103] Continue to refer to the appendix , the manicure lamp further includes a control unit 70, the control unit 70 is installed on the assembly 30, and the control unit 70 is connected to the main circuit board 40. The user can control the working state of the manicure lamp through the control unit 70. For example, through the control unit 70, the user can control whether the battery 50 supplies power to the light source 21 and the duration of power supply to the light source 21.

[0104] Specifically, the assembly 30 has a card slot 36 and an avoidance slot 37. The control unit 70 includes a control circuit board 71 and a series of electronic components 72 mounted on the control circuit board 71. For example, resistors, capacitors, switches, etc. can be mounted on the control circuit board 71. The opposite ends of the control circuit board 71 can be snapped into the card slot 36 of the assembly 30, and the avoidance slot 37 of the assembly 30 avoids the electronic components 72. In this way, the control unit 70 can be installed on the assembly 30.

[0105] Preferably, the electronic component 72 implemented as a switch is a micro-pressure switch, which abuts against the panel 112 of the first housing 11. In this way, the user can control the electronic component 72 by slightly pressing the panel 112, and further control the working state of the nail lamp.

[0106] Continue to refer to the attached Figures 1 to 10 , and Figure 4 , the nail lamp further includes a detection unit 80. The detection unit 80 is connected to the main circuit board 40. The detection unit 80 is used to detect whether the user places the fingertip in the nail space 101 of the housing 10. If the detection unit 80 detects that the user places the fingertip in the nail space 101 of the housing 10, the light source 21 of the nail lamp can be automatically lit.

[0107] Specifically, the detection unit 80 includes a transmitting part 81 and a receiving part 82. The transmitting part 81 and the receiving part 82 are arranged on the housing 10 in such a way that they are located on opposite sides of the nail space 101 of the housing 10, and the position of the transmitting part 81 corresponds to the position of the receiving part 82, allowing the receiving part 82 to receive the signal emitted by the transmitting part 81, such as an optical signal. After the transmitting part 81 emits a signal, if the receiving part 82 can receive the signal, it means that there is no obstacle blocking between the transmitting part 81 and the receiving part 82. At this time, the detection result of the detection unit 80 is that the nail space 101 of the housing 10 is not placed with a fingertip. If the receiving part 82 cannot receive the signal, it means that there is an obstacle between the transmitting part 81 and the receiving part 82. At this time, the detection result of the detection unit 80 is that a fingertip is placed in the nail space 101 of the housing 10.

[0108] Specifically, on opposite sides of the inner cylinder 111 of the first housing 11, there are respectively a first mounting hole 1111 and a second mounting hole 1112. The positions of the first mounting hole 1111 and the second mounting hole 1112 correspond to each other, and both the first mounting hole 1111 and the second mounting hole 1112 communicate with the nail art space 101 and the receiving cavity 13 of the housing 10. The transmitting portion 81 is installed in the first mounting hole 1111 of the inner cylinder 111 of the first housing 11, and the receiving portion 82 is installed in the second mounting hole 1112 of the inner cylinder 111 of the first housing 11. In this way, the positions of the transmitting portion 81 and the receiving portion 82 can correspond to each other, so that after the transmitting portion 81 emits a signal, the receiving portion 82 can receive the signal.

[0109] Preferably, the positions of the first mounting hole 1111 and the second mounting hole 1112 of the first inner cylinder 111 of the first housing 11 are close to the bottom of the nail art space 101 of the housing 10. In this way, the positions of the transmitting portion 81 and the receiving portion 82 are close to the bottom of the nail art space 101 of the housing 10, so that after the user places the fingertip in the nail art space 101 of the housing 10, the fingertip can block the signal emitted by the transmitting portion 81.

[0110] Continue to attach 、 Figure 6, the lens unit 200 includes a first lens portion 23 and a second lens portion 24, wherein the first lens portion 23 has a plurality of first small lenses 231 spaced from each other, and each of the first small lenses 231 has a first arc surface 2311 and a first plane 2312 opposite to each other. The second lens portion 24 has a plurality of second small lenses 241 spaced from each other, and each of the second small lenses 241 has a second arc surface 2411 and a second plane 2412 opposite to each other. The first lens portion 23 and the second lens portion 24 are installed in a buckled manner with the first plane 2312 of the first small lens 231 and the second plane 2412 of the second small lens 241 being in contact with each other, so that the positions of each of the first small lenses 231 and the positions of each of the second small lenses 241 correspond in the thickness direction of the lens unit 200 for forming each of the lenses 223. In this way, on the one hand, it is beneficial to reduce the technical difficulty and manufacturing cost of the lens unit 200. On the other hand, it is beneficial to reduce the thickness dimensions of the first lens portion 23 and the second lens portion 24. In this way, internal shrinkage deformation of the first lens portion 23 and the second lens portion 24 can be avoided, which is beneficial to maintaining the surface profile of the first arc surface 2311 and the first plane 2312 of the first small lens 231 of the first lens portion 23 and beneficial to maintaining the surface profile of the second arc surface 2411 and the second plane 2412 of the second small lens 241 of the second lens portion 24, thereby ensuring that the optical performance of the lens unit 200 remains unchanged. Optionally, in other examples of the nail lamp of the present invention, the lens unit 200 may also be integral, that is, the four lenses 223 of the lens unit 200 may be integrally formed.

[0111] Further, the first lens portion 23 includes four of the first small lenses 231. Correspondingly, the second lens portion 24 includes four of the second small lenses 241. In this way, the four first small lenses 231 of the first lens portion 23 and the four second small lenses 241 of the second lens portion 24 form the four lenses 223 of the lens unit 200.

[0112] Preferably, along a direction perpendicular to the extending direction of the lens unit 200, the positions of at least one of the first small lenses 231 of the first lens portion 23 are offset from the positions of the other first small lenses 231. Correspondingly, the positions of at least one of the second small lenses 241 of the second lens portion 24 are offset from the positions of the other second small lenses 241. In this way, after the first lens portion 23 and the second lens portion 24 are snapped together, along a direction perpendicular to the extending direction of the lens unit 200, the positions of at least one of the lenses 223 are offset from the positions of the other lenses 223. It can be understood that the direction perpendicular to the extending direction of the lens unit 200 is the thickness direction of the nail lamp.

[0113] Reference appendix Figures 1 to 10 Figure 6 Figure 5 Figure 6 Figure 1 Figure 2 Figure 4 Figures 11 to 28 Figures 11 to 28 Figures 13 to 15 Figure 22 Figure 23 Figures 18 to 28 Figures 13 to 21 Figures 11 to 28 Figures 13 to 15 Figure 22 Figure 23 Figures 13 to 15 Figure 22 Figure 23 Figure 22 Figure 23 Figures 13 to 15 Figures 11 to 15 Figure 22 Figure 23 Figures 13 to 15 Figures 24 to 28 Figures 26 to 28 One end of the first lens portion 23 has at least one first insertion hole 232, and the other end has at least one first insertion post 233. One end of the second lens portion 24 has at least one second insertion post 242, and the other end has at least one second insertion hole 243. The first insertion post 233 of the first lens portion 23 is inserted into the second insertion hole 243 of the second lens portion 24, and the second insertion post 242 of the second lens portion 24 is inserted into the first insertion hole 232 of the first lens portion 23. In this way, the first lens portion 23 and the second lens portion 24 can be snap-mounted, and it is ensured that the positions of the respective first small lenses 231 of the first lens portion 23 correspond one by one to the positions of the respective second small lenses 241 of the second lens portion 24.

[0114] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and described in the embodiments. Without departing from the principle, the embodiments of the present invention can have any deformation or modification.

Claims

1. A lens unit, characterized in that, Comprising: A first lens portion, wherein the first lens portion has a plurality of spaced-apart first lenslets, and each of the first lenslets has a respective first arcuate surface and a first plane that are opposite to each other; and A second lens portion, wherein the second lens portion has a plurality of spaced-apart second lenslets, and each of the second lenslets has a respective second arcuate surface and a second plane that are opposite to each other, and wherein the first lens portion and the second lens portion are mounted in a snap-fit manner with the first plane of the first lenslets and the second plane of the second lenslets being in contact with each other, so that the positions of each of the first lenslets and the positions of each of the second lenslets correspond in the thickness direction of the lens unit.

2. The lens unit according to claim 1, wherein the first lens portion includes four of the first lenslets, and correspondingly, the second lens portion includes four of the second lenslets.

3. The lens unit according to claim 1, wherein along a direction perpendicular to the extending direction of the lens unit, the position of at least one of the first lenslets of the first lens portion is offset from the positions of the other first lenslets.

4. The lens unit according to claim 1, wherein one end of the first lens portion has at least one first insertion hole, and the other end has at least one first insertion post, and wherein one end of the second lens portion has at least one second insertion post, and the other end has at least one second insertion hole, and wherein the first insertion post of the first lens portion is inserted into the second insertion hole of the second lens portion, and the second insertion post of the second lens portion is inserted into the first insertion hole of the first lens portion.

5. A nail lamp, characterized in that, Comprising: A plurality of light sources; A lens unit, wherein the lens unit includes a plurality of lenses; And A housing, wherein the housing has a manicure space, a fingertip access passage, and a plurality of light-emitting channels, the fingertip access passage communicates with the manicure space at the front of the manicure space, and each of the light-emitting channels communicates with the manicure space at the top of the manicure space, and wherein each of the light sources is respectively disposed on the incident side of each of the lenses, and the exit side of each of the lenses respectively corresponds to each of the light-emitting channels of the housing.

6. The manicure lamp according to claim 5, wherein the lens unit includes a first lens portion and a second lens portion, the first lens portion has a plurality of spaced-apart first lenslets, each of the first lenslets has a respective first arcuate surface and a first plane that are opposite to each other, the second lens portion has a plurality of spaced-apart second lenslets, each of the second lenslets has a respective second arcuate surface and a second plane that are opposite to each other, and wherein the first lens portion and the second lens portion are mounted in a snap-fit manner with the first plane of the first lenslets and the second plane of the second lenslets being in contact with each other, so that the positions of each of the first lenslets and the positions of each of the second lenslets correspond in the thickness direction of the lens unit for forming each of the lenses.

7. The nail lamp according to claim 5, wherein the lens unit includes four of the lenses.

8. The nail lamp according to claim 6, wherein the first lens portion includes four of the first small lenses, and correspondingly, the second lens portion includes four of the second small lenses.

9. The nail lamp according to claim 7, wherein the four lenses of the lens unit are integrally formed.

10. The nail lamp according to claim 7, wherein along the thickness direction of the nail lamp, the position of at least one of the lenses is offset from the positions of the other lenses.

11. The nail lamp according to claim 8, wherein along the direction perpendicular to the extending direction of the lens unit, the position of at least one of the first small lenses of the first lens portion is offset from the positions of the other first small lenses.

12. The nail lamp according to claim 6, wherein one end of the first lens portion has at least one first insertion hole, and the other end has at least one first insertion post, wherein one end of the second lens portion has at least one second insertion post, and the other end has at least one second insertion hole, wherein the first insertion post of the first lens portion is inserted into the second insertion hole of the second lens portion, and the second insertion post of the second lens portion is inserted into the first insertion hole of the first lens portion.

13. The nail lamp according to claim 5, wherein the nail lamp includes a main circuit board and an assembly body, wherein each of the light sources is respectively mounted on the main circuit board, wherein the assembly body has a plurality of through holes, the main circuit board is disposed on the top of the assembly body, and each of the light sources is suspended by the main circuit board at the top opening of the through holes of the assembly body, the lens unit is disposed at the bottom of the assembly body, and each of the lenses is held at the bottom opening of the through holes of the assembly body, wherein the assembly body is mounted on the housing.

14. The nail lamp according to claim 13, wherein each of the lenses of the lens unit respectively closes the bottom opening of the through holes of the assembly body.

15. The nail lamp according to claim 13, wherein the housing includes a first housing and a second housing and has a receiving cavity, the first housing and the second housing are mounted to each other, the receiving cavity of the housing is formed between the first housing and the second housing, the first housing forms the nail space and the fingertip access channel of the housing, the light exit channel of the housing is formed in the first housing, wherein the assembly body is mounted on the first housing, and the assembly body, the lens unit and the main circuit board are received in the receiving cavity of the housing.

16. The nail lamp according to claim 15, wherein the first housing includes an inner cylinder and a panel extending around from the front side of the inner cylinder, the second housing includes an outer cylinder and a rear cover extending inwards from the rear side of the outer cylinder, wherein the front side of the panel and the outer cylinder are installed with each other, and the rear side of the rear cover and the inner cylinder are installed with each other to form the accommodation cavity of the housing between the first housing and the second housing.

17. The nail lamp according to claim 16, wherein the nail lamp includes a plurality of buckle components, each of the buckle components respectively includes a first buckle body and a second buckle body, wherein at least one of the first buckle bodies is respectively provided on the rear side of the inner cylinder and the panel, at least one of the second buckle bodies is respectively provided on the front side of the outer cylinder and the rear cover, the first buckle body provided on the rear side of the inner cylinder and the second buckle body provided on the rear cover are buckled with each other, and the first buckle body provided on the panel and the second buckle body provided on the front side of the outer cylinder are buckled with each other to install the first housing and the second housing.

18. The nail lamp according to claim 16, wherein the first housing includes at least one assembly part, the bottom and the front side of the assembly part are respectively connected to the inner cylinder and the panel, the top of the assembly part respectively forms an assembly post above the inner cylinder and a plug post at the rear side of the panel, wherein the assembly body has at least one assembly groove and at least one plug hole, wherein the assembly post of the assembly part is assembled in the assembly groove of the assembly body, and the plug post of the assembly part is inserted into the plug hole of the assembly body.

19. The nail lamp according to claim 18, wherein the first housing includes two of the assembly parts, the two assembly parts are respectively located at opposite ends of the first housing, wherein opposite ends of the assembly body respectively have one of the assembly grooves and one of the plug holes, and the assembly posts of each of the assembly parts are respectively assembled in the respective assembly grooves of the assembly body, and the plug posts of each of the assembly parts are respectively inserted into the respective plug holes of the assembly body.

20. The nail lamp according to any one of claims 5 to 19, wherein the light source includes two lamp beads, and the two lamp beads are arranged along the thickness direction of the nail lamp.

21. The nail lamp according to any one of claims 13 to 19, wherein the nail lamp includes a battery and a charging terminal, and the battery and the charging terminal are respectively connected to the main circuit board.

22. The nail lamp according to any one of claims 13 to 19, wherein the nail lamp includes a detection unit, the detection unit is connected to the main circuit board, the detection unit includes a transmitting part and a receiving part corresponding in height, the transmitting part and the receiving part are respectively provided on the housing, and the transmitting part and the receiving part are located on opposite sides of the nail space of the housing.

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