阅读说明：本技术 一种电连接器 (Electric connector ) 是由 张育玮 于 2021-07-09 设计创作，主要内容包括：本发明公开了一种电连接器,包括一前面板,包括复数个前面板穿孔；一导光件,包括一导光板及复数个出光环,该复数个出光环分别自所述导光板的一前端面凸出而成,所述导光板的后端面相对于复数个出光环中间处的位置设置有一入光结构,所述入光结构设有一入光端面；每一所述出光环的一出光端面经所述前面板穿孔而露出所述前面板；复数个板端接头,每一所述板端接头分别经所述出光环露出所述前面板；一光源,其与所述入光结构的入光端面相对设置。本发明的电连接器提供了多个设有均匀发光外缘的防水插接口,且具有结构简单、公差宽容度高、组装简易的优点。(The invention discloses an electric connector, which comprises a front panel, a plurality of front panel through holes, a plurality of first connecting pieces and a plurality of second connecting pieces, wherein the front panel comprises a plurality of front panel through holes; the light guide piece comprises a light guide plate and a plurality of light emitting rings, the light emitting rings are respectively formed by protruding from the front end face of the light guide plate, the rear end face of the light guide plate is provided with a light inlet structure relative to the middle position of the light emitting rings, and the light inlet structure is provided with a light inlet end face; one light-emitting end face of each light-emitting ring is exposed out of the front panel through hole; the plate end joints are exposed out of the front panel through the light outlet rings respectively; and the light source is arranged opposite to the light incident end face of the light incident structure. The electric connector of the invention provides a plurality of waterproof interfaces with uniformly luminous outer edges, and has the advantages of simple structure, high tolerance and simple and easy assembly.)

1. An electrical connector, comprising:

a front panel including a plurality of front panel through holes;

the light guide piece comprises a light guide plate and a plurality of light emitting rings, the light emitting rings are respectively formed by protruding from the front end face of the light guide plate, the rear end face of the light guide plate is provided with a light inlet structure relative to the middle position of the light emitting rings, and the light inlet structure is provided with a light inlet end face; one light-emitting end face of each light-emitting ring is exposed out of the front panel through hole;

the plate end joints are exposed out of the front panel through the light outlet rings respectively;

and the light source is arranged opposite to the light incident end face of the light incident structure.

2. The electrical connector of claim 1, wherein the light entry structure comprises:

the light inlet end face and at least a first side inclined face and a second side inclined face are arranged on two sides of the light inlet end face respectively and face different light outlet rings respectively.

3. The electrical connector according to claim 2, wherein the first side inclined surface and the second side inclined surface are configured to be inclined to both sides in a length direction of the light guide plate, respectively, and form an isosceles trapezoid structure protruding and tapering from a rear end surface of the light guide plate with the light incident end surface, and the light incident end surface is located at an end surface of the isosceles trapezoid structure.

4. The electrical connector of claim 2, further comprising a first sealing member covering the inner side surface of the light guide plate and the gap between the board end connector and the light guide plate to provide waterproof performance, wherein the first sealing member is provided with a relief hole to allow the light of the light source to enter the light incident structure.

5. The electrical connector of claim 4, wherein the first seal has a light transmittance of less than 50%.

6. The electrical connector of claim 5, further comprising a second sealing member disposed between the light guide plate and the front panel for bonding the light guide plate and the front panel; the second sealing element is a waterproof adhesive layer which comprises a plurality of waterproof through holes so as to allow the plurality of light emitting rings and the plurality of board end joints to penetrate out through the plurality of waterproof through holes.

7. The electrical connector of claim 1, further comprising a circuit board having the light source and a plurality of board end contacts soldered thereto.

8. The electrical connector as claimed in claim 7, wherein a shortest distance between the light exit surface of the light source and the light entrance end surface of the light entrance structure is greater than or equal to 0.2 mm.

9. The electrical connector of claim 7, further comprising a frame, a rear housing, a plurality of connection ports, the plurality of connection ports being soldered to the circuit board;

the outer frame and the rear shell are fixed and connected with the front panel through a third sealing piece, the other end face of the rear shell, far away from the outer frame, is provided with a plurality of through holes for exposing at least one part of the plurality of connecting ports, the number of the connecting ports is two, one connecting port is used for allowing signal transmission, and the other connecting port is used for only allowing electric energy transmission.

10. The electrical connector of claim 7, wherein the light guide member has a first carrying groove, the front panel has a second carrying groove, and the first carrying groove and the second carrying groove are respectively used for supporting the circuit board.

Technical Field

The invention relates to the field of electronic equipment, in particular to an electric connector.

Background

With the increasing degree of lightness and thinness of electronic products, the number of reserved ports of the products is decreasing, which makes consumers need to purchase HUBs (HUBs) to expand the functions of the electronic products.

Another application scenario is an automotive scenario, and a driver has a high probability of generating a demand for charging a mobile phone in the driving process, so that the automotive HUB (HUB) also has a considerable market prospect.

Besides the functional module of the concentrator, consumers also put forward higher requirements on the aesthetic degree of the concentrator, so that manufacturers of the concentrator in the prior art can improve the original products from the aspect of modeling, and one of the requirements is to add a light-emitting function to the concentrator.

However, since the structure of the hub at the socket is more complex and compact than other areas, in the prior art, a light-transmitting structure is usually disposed at a non-socket of the housing, for example, chinese patent publication No. CN 210579719U, CN210927158U, etc., and a light-guiding column is disposed on the surface of the housing as a working status indicator, which obviously cannot guide a user to quickly position the socket.

The prior art lacks an electric connector which is simple in structure and is provided with a light-transmitting structure at a socket.

Disclosure of Invention

In order to solve the problems in the prior art, the electric connector provided by the invention provides a plurality of waterproof interfaces with uniformly luminous outer edges, and has the advantages of simple structure, high tolerance and easiness in assembly. The specific technical scheme is as follows:

the present invention provides an electrical connector comprising:

a front panel including a plurality of front panel through holes;

the light guide piece comprises a light guide plate and a plurality of light emitting rings, the light emitting rings are respectively formed by protruding from the front end face of the light guide plate, the rear end face of the light guide plate is provided with a light inlet structure relative to the middle position of the light emitting rings, and the light inlet structure is provided with a light inlet end face; one light-emitting end face of each light-emitting ring is exposed out of the front panel through hole;

the plate end joints are exposed out of the front panel through the light outlet rings respectively;

and the light source is arranged opposite to the light incident end face of the light incident structure. Only one light source emits light corresponding to the outer edges of the joints of the plurality of plate ends, so that the number of elements is small and the structure is simple.

Further, in accordance with any of the above-mentioned designs, the electrical connector may further adopt the following improved design, that is, the light incident structure includes: the light inlet end face and at least a first side inclined face and a second side inclined face are arranged on two sides of the light inlet end face respectively and face different light outlet rings respectively.

Further, in any one of the above-mentioned designs, the electrical connector may further adopt an improved design that the first side inclined plane and the second side inclined plane are respectively configured to be inclined to both sides in the length direction of the light guide plate, and form an isosceles trapezoid structure protruding from the rear end surface of the light guide plate and tapering with the light incident end surface, and the light incident end surface is located at the end surface of the isosceles trapezoid structure.

Further, in any one of the above-mentioned designs, the electrical connector may further adopt an improved design as follows, that is, the electrical connector further includes a first sealing member covering the inner side surface of the light guide plate and the gap between the plate end connector and the light guide plate to provide a waterproof effect, and the first sealing member is provided with a relief hole to allow the light of the light source to enter the light incident structure.

Further, in any of the above-mentioned designs, the electrical connector may further adopt an improved design that the electrical connector further includes a second sealing member disposed between the light guide plate and the front panel for joining the light guide plate and the front panel; the second sealing element is a waterproof adhesive layer which comprises a plurality of waterproof through holes so as to allow the plurality of light emitting rings and the plurality of board end joints to penetrate out through the plurality of waterproof through holes.

Further, in any of the above-mentioned designs, the electrical connector may further adopt a modified design in which the second sealing member is a double-sided adhesive, and the first sealing member and the second sealing member are low-light-transmission elements. First sealing member and second sealing member are sheet structure, need not the point and need not accurate counterpoint and can realize waterproof equipment.

Further, in any of the above-mentioned designs, the electrical connector may further adopt an improved design that the electrical connector further includes a circuit board on which the light source and a plurality of board end connectors are soldered.

Further, in any of the above designs, the electrical connector may further adopt an improved design that the minimum distance between the light emitting surface of the light source and the light incident end surface of the light incident structure is greater than or equal to 0.2mm, so as to allow the LED light source to be assembled after being welded on the circuit board in advance by matching with the light guide member, and the effect is not affected even if a large installation tolerance exists.

Further, the electrical connector of any of the above-mentioned designs may further adopt the following improved design, that is, the electrical connector of any of the above-mentioned designs may further adopt the following improved design, the electrical connector further comprises an outer frame, a rear housing, a plurality of connection ports, and the plurality of connection ports are welded on the circuit board; the outer frame and the rear shell are fixed and connected with the front panel through a third sealing piece, and the other end face of the rear shell, which is far away from the outer frame, is provided with a plurality of through holes for exposing at least one part of the plurality of connecting ports.

Further, in any of the aforementioned designs, the electrical connector may further adopt a modified design that the number of the connecting ports is two, wherein one connecting port is used for allowing signal transmission, and the other connecting port is used for only allowing power transmission.

Further, in any of the aforementioned designs, the electrical connector may further adopt an improved design that the light guide member is provided with a first bearing groove, the front panel is provided with a second bearing groove, and the first bearing groove and the second bearing groove are respectively used for supporting the circuit board; the thickness of the first bearing groove and the thickness of the second bearing groove are matched with the thickness of the circuit board, so that the circuit board can be assembled in a plug-in mode, the assembling difficulty is reduced, and the assembling efficiency is improved.

The technical scheme provided by the invention has the following beneficial effects:

a. a plurality of waterproof sockets with uniformly luminous outer edges are provided;

b. has the advantages of simple structure, high tolerance and easy assembly.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a rear perspective view of a light guide of an electrical connector according to an embodiment of the present invention;

FIG. 2 is a schematic view of the light guide member of FIG. 1 covered with a first sealing member;

fig. 3 is a front perspective view of a light guide of the electrical connector according to the embodiment of the invention;

fig. 4 is a schematic perspective view of the electrical connector according to the embodiment of the present invention after the housing is disassembled;

fig. 5 is a front perspective view of an electrical connector provided by an embodiment of the present invention;

fig. 6 is a rear perspective view of an electrical connector provided in accordance with an embodiment of the present invention;

fig. 7 is a schematic side cross-sectional view of an electrical connector provided by an embodiment of the present invention at a first board end joint;

fig. 8 is a schematic side cross-sectional view of an electrical connector provided by an embodiment of the present invention at a non-board end joint;

wherein the reference numerals include: 1-light guide member, 11-light guide plate, 12-first light emitting ring, 13-second light emitting ring, 14-light incident structure, 141-light incident end face, 142-first side inclined face, 143-second side inclined face, 15-auxiliary light guide structure, 21-circuit board, 22-light source, 23-first connection port, 24-second connection port, 25-first board end connector, 26-second end board connector, 3-outer frame, 4-rear shell, 5-front panel, 51-first front panel through hole, 52-second front panel through hole, 61-first sealing member, 62-second sealing member, 71-first bearing groove, 72-second bearing groove, and 8-third sealing member.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. In the present specification and claims, the term "comprises/includes/has a first component" or "comprises/includes/has a first component" means that the number of the first component is at least one and may be two or more or plural, unless otherwise conflicting with the original description. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or device. The terms "front/side", "rear/side", "left/side", "right/side", "upper/side", "lower/side" and the like are used merely to provide a description of the relative relationship between the respective elements, and do not limit the application direction of the respective elements.

An embodiment of the present invention provides an electrical connector, which is a USB HUB for a vehicle, and can be applied to a vehicle front-loading market which is shipped from a factory or a vehicle rear-loading market which is not shipped from a factory. Obviously, the USB HUB for a vehicle is only one application of the electrical connector of the present embodiment, and may also be used with electronic digital products such as a notebook, and the specific application thereof is not taken as a basis for limiting the protection scope of the present invention. The electric connector of the embodiment of the invention provides a plurality of waterproof inserting ports with uniformly luminous outer edges; and has the advantages of simple structure, high tolerance and easy assembly.

Referring to fig. 1 to 8, in the present embodiment, the electrical connector mainly includes a light guide member 1, a circuit board 21, an outer frame 3, a rear housing 4, a front panel 5, a first sealing member 61, a second sealing member 62, a third sealing member 8, and the like. The details are as follows.

The design of the light guide 1 is explained below.

Referring to fig. 1 and 3, the light guide member 1 is made of a light guide material, and includes a light guide plate 11 and two light emitting rings, which are a first light emitting ring 12 and a second light emitting ring 13, respectively, where the first light emitting ring 12 and the second light emitting ring 13 are respectively formed by protruding from a front end surface of the light guide plate 11, that is, the first light emitting ring 12 and the second light emitting ring 13 are respectively integrally formed (One piece formed) with the light guide plate 11, and a through hole of the light guide plate 11 is formed in an inner region of the first light emitting ring 12 and the second light emitting ring 13; the front end face refers to the end face of the light guide 1 facing forward, and the rear end face refers to the end face facing rearward. The rear end surface of the light guide plate 11 is provided with a light incident structure 14 at a position corresponding to the middle of the first light emitting ring 12 and the second light emitting ring 13, and at the middle of the previous sentence, see fig. 1, it can be understood that the light incident structure 14 is located at the center between two corresponding through holes of the first light emitting ring 12 and the second light emitting ring 13 on the rear end surface of the light guide plate 11.

The light incident structure 14 has a light incident end surface 141, in the embodiment, the light incident end surface 141 of the light incident structure 14 is a plane, but may also be a cambered surface structure. In addition to the light-entrance end face 141, the light-entrance structure 14 further includes a first side inclined face 142 and a second side inclined face 143, as shown in fig. 1, corresponding to the first light emitting ring 12 and the second light emitting ring 13 disposed along the length direction of the light guide plate 11, one side of the first side inclined plane 142 and one side of the second side inclined plane 143 are respectively inclined to the left and the right in the length direction of the light guide plate 11, and are respectively disposed on both sides of the light incident end surface 141 and respectively face different light emitting rings, wherein, the first side inclined plane 142 is inclined from the light incident end surface 141 to the direction close to the first light exiting ring 12 and connected to the rear end surface, the second side inclined plane 143 is inclined from the light incident end surface 141 to the direction close to the second light exiting ring 13 and connected to the rear end surface, after light emitted by the light source 22 enters the light entrance end face 141, the light can be reflected to the second light exit ring 13 and the first light exit ring 12 through the first side inclined face 142 and the second side inclined face 143, so that the light uniformizing effect of the light exit rings is effectively improved.

Especially for the case that the first light exiting ring 12 and the second light exiting ring 13 have the same shape, the first side inclined surface 142 and the second side inclined surface 143 are configured to form an isosceles trapezoid three-dimensional structure protruding from the rear end surface of the light guide plate 11 and tapering inward with the light incident end surface 141, and the light incident end surface 141 is located at the end surface of the isosceles trapezoid three-dimensional structure with respect to the rear end surface of the light guide plate 11 as a start end surface.

Further, referring to fig. 1 and 2, the rear end surface of the light guide plate 11 is further provided with an auxiliary light guide structure 15 disposed adjacent to the light entrance structure 14. In addition, the auxiliary light guide structure 15 protrudes from the rear end surface of the light guide plate 11 and is tapered outward, that is, the auxiliary light guide structure 15 also has two side slopes, i.e., the protrusion height of the auxiliary light guide structure 15 relative to the rear end surface of the light guide plate 11 is lower than the protrusion height of the light incident structure 14 relative to the rear end surface of the light guide plate 11; the upper end of the auxiliary light guide structure 15 is connected to the middle of the light incident structure 14, and the length direction of the auxiliary light guide structure 15 intersects with the length direction of the light incident structure 14 and is in a T shape. In addition, since the auxiliary light guide structure 15 also has two left and right side inclined planes, the incident light can be reflected to the corresponding light emitting rings respectively through the side inclined planes on both sides after being guided into the auxiliary light guide structure 15 through the light incident structure 14, thereby improving the light uniformizing effect of the light emitting rings. In this embodiment, the auxiliary light guiding structure 15 is only located below the light incident structure 14, but if necessary, another identical auxiliary light guiding structure 15 may be added on the upper position to form a cross shape, so as to further improve the light uniformizing effect.

In addition, referring to fig. 1 and fig. 3, the left and right sides of the light guide plate 11 are provided with first carrying grooves 71, and the first carrying grooves 71 respectively extend horizontally in the left and right directions to abut against and carry the circuit board 21. The light guide member 1 is arranged in left and right mirror directions.

The design of the circuit board 21 is explained below.

Referring to fig. 4, the circuit board 21 may be a PCB circuit board, and two waterproof board end connectors are welded to the front end edge of the circuit board, and referring to fig. 4 and 5, the two board end connectors are a first board end connector 25 and a second board end connector 26, respectively. In this embodiment, the two waterproof board terminals are the same and correspond to USB3.0TYPE C Female terminals and board terminals (USB Type-C Female PCB Mount), but the invention is not limited to the Type of the terminals, and the specifications of the two board terminals may be different if necessary, for example, the two board terminals may adopt different USB or other different terminal protocols, or one of them only supplies power, and the other has a signal transmission function and a power supply function. Fig. 1 to 8 are drawn to a real scale, and considering that the size of the circuit board in the board terminal connector of USB3.0TYPE C is fixed, the sizes of the components are not described in detail, but their sizes are inherently (coherent) disclosed in fig. 1 to 8, and should be directly and accurately known without ambiguity and should be regarded as a part of the content of this specification.

Referring to fig. 4, a light source 22 is welded in the middle of the two waterproof board end joints, the light source 22 may be various light emitting elements, the light source 22 is preferably an LED, the light emitting angle is not limited, and the light emitting angle of the LED in this embodiment is selected within a range of 130 ° ± 5 °.

In addition, referring to fig. 4 and 6, two connection ports are soldered to the rear edge of the circuit board 21: the two connection ports include a first connection port 23 and a second connection port 24, which are preferably soldered to a side different from the two board terminals, such as the two board terminals are soldered to the front side of the circuit board 21, and the two connection ports are soldered to the rear side of the circuit board 21, the electrical connector of the embodiment of the present invention may be a USB HUB for a vehicle, and correspondingly, the two connection ports may be connection ports with the same function type or connection ports with different function types, such as the first connection port 23 is used to only allow power transmission (such as charging a mobile phone by using a power signal of a vehicle-mounted system), and the second connection port 24 is used to allow signal transmission (such as transmitting a picture or a music file in a mobile terminal to the vehicle-mounted system).

The design of the front panel 5 is explained below.

Referring to fig. 5, the front panel 5 is a rectangular plate-shaped element, and the front panel 5 may be made of a light-conducting or non-light-conducting material, in this case, the front panel 5 is made of a non-light-conducting (opaque) material. The light guide 1 is provided with two front panel through holes, a first front panel through hole 51 and a second front panel through hole 52, penetrating the front and rear surfaces of the front panel 5. Referring to fig. 5, the first front panel through-hole 51 and the second front panel through-hole 52 are horizontally arranged in the left-right direction along the length direction of the connector and are located at the same height. In addition, referring to fig. 4, the rear surface of the front panel 5 is provided with a second bearing groove 72 at the same height position on the left and right side edges, respectively, which extends backward and has a C-shaped cross section, and the groove of the second bearing groove 72 is used for inserting a circuit board 21 horizontally forward and aligning and supporting the circuit board.

The connection relationship and the operation principle of each element will be described below.

Referring to fig. 5 and 7, the light-emitting end surface of the first light-emitting ring 12 is exposed out of the front panel 5 through the first front panel through hole 51 of the front panel 5, and the light-emitting end surface of the second light-emitting ring 13 is exposed out of the front panel 5 through the second front panel through hole 52 of the front panel 5, where "exposed" does not limit the first light-emitting ring 12 and the second light-emitting ring 13 protruding out of the front surface of the front panel 5, but indicates that the first light-emitting ring 12 and the second light-emitting ring 13 are uncovered from the front view angle (e.g., the view angle of fig. 5) of the electrical connector or can be observed/seen, and it is within the scope of the present invention that the first light-emitting ring 12 and the second light-emitting ring 13 protrude out of the front surface of the front panel 5 or are flush with the front surface of the front panel 5, or even can be slightly recessed into the front surface of the front panel 5 when they can be observed;

the front panel 5 is made of a non-light-conducting material, and the light guide member 1 is made of a light-conducting material, so that light emitted by the light source 22 can enter the light guide member 1 and is exposed out of the front surface of the front panel 5 of the electric connector through the first light emitting ring 12 and the second light emitting ring 13, namely, outer-edge light rings are formed at joints of the two end plates, the appearance is improved, and a user is guided to accurately and quickly complete the insertion operation of electric connection in a dark environment using scene.

Referring to fig. 4 and 8, the light source 22 is disposed opposite to the light incident end surface 141 of the light incident structure 14, and preferably, the light emitting surface of the light source 22 is disposed opposite to the light incident end surface 141; the shortest distance between the light emitting surface of the light source 22 and the light incident surface 141 is preferably greater than or equal to 0.2mm and less than 10mm, and the design of the reserved space allows the light source 22 to be welded on the circuit board 21 and then assembled with the light guide member 1, so as to prevent the light guide source 22 from interfering with the light incident surface 141 due to welding or element size tolerance, thereby providing a larger tolerance.

Referring to fig. 4, the left and right sides of the front panel 5 are provided with second bearing grooves 72, the left and right sides of the front end of the circuit board 21 are respectively accommodated in the first bearing grooves 71 on the left and right sides of the light guide plate 11, the front ends of the left and right sides of the circuit board 21 are respectively accommodated in the second bearing grooves 72 on the left and right sides of the front panel 5, the first bearing grooves 71 and the second bearing grooves 72 are respectively used for supporting the front end of the circuit board 21, referring to fig. 7, the rear part in the rear housing 4 is further provided with a supporting block for supporting the rear part of the circuit board 21; preferably, the width of the first carrying groove 71 and/or the second carrying groove 72 is adapted to the thickness of the circuit board 21, so that the circuit board 21 can be mounted in a plug-in fit without additional fixing members.

Referring to fig. 4 and 5, the two board end connectors are a first board end connector 25 and a second board end connector 26, respectively, as shown in fig. 5 and 7, the first board end connector 25 is exposed out of the front panel 5 through (the through hole of) the first light emitting ring 12, and the second board end connector 26 is exposed out of the front panel 5 through (the through hole of) the second light emitting ring 13, and similarly, the "exposure" of the light emitting rings is the protection scope required by the present invention, regardless of whether the first board end connector 25 and the second board end connector 26 are protruded out of the front surface of the front panel 5 or flush with the front surface of the front panel 5, or even slightly retracted into the front surface of the front panel 5 under the condition of being visible;

referring to fig. 4 and 6, the two connection ports include a first connection port 23 and a second connection port 24, which are preferably welded on a side different from the two board end connectors, for example, the two board end connectors are welded on the front side of the circuit board 21, the two connection ports are welded on the rear side of the circuit board 21, and accordingly, two through holes are provided on the end surface of the rear housing 4 opposite to the front panel 5 for exposing at least a portion of the first connection port 23 and the second connection port 24, which is similar to the above-mentioned light emitting ring and the "exposure" of the board end connectors, and it is within the scope of the present invention that the first connection port 23 and the second connection port 24 are protruded from the rear surface of the rear housing 4, or flush with the rear surface of the rear housing 4, or even slightly retracted from the rear surface of the rear housing 4 in the premise of being visible in the rear view.

Referring to fig. 2, the inner surface of the light guide plate 11 is covered with a first sealing member 61. The first sealing member 61 is a member such as a waterproof rubber gasket that can be used to fill the gap between the board end joint and the light guide plate 11, and can provide waterproof performance. Meanwhile, the first sealing member 61 is a low light-transmitting element to absorb light leakage of the light guide plate 11, and the first sealing member 61 is further provided with an avoiding hole corresponding to the light incident structure 14 to allow light of the light source 22 to enter the light incident structure 14. The low light transmission element in this embodiment is defined as having a light transmittance of less than 50%, i.e., a ratio of a residual light flux (LM) to an original light flux (LM) after light passes through the element. In this embodiment, the light transmittance of the first sealing member 61 is less than 20%, and the light transmittance can be adjusted to be less than or equal to 10%, 5% or 1%, so as to obtain a better light-shielding effect.

In addition, referring to fig. 3, the second sealing member 62 is attached to the front surface of the light guide plate 11, and the second sealing member 62 is mainly used as a waterproof adhesive layer and an adhesive layer. The second sealing member 62 may be a double-sided adhesive layer (for example, VHB adhesive with high viscosity), and the second sealing member 62 includes two waterproof perforations that are offset from the first light-exiting ring 12 and the second light-exiting ring 13 to allow the first board end connector 25 and the second board end connector 26 to pass through the waterproof perforations. That is, the second sealing member 62 completely covers the front end surface of the light guide plate 11 except for the two through holes and the outer contour of the second sealing member 62 corresponds to the outer contour of the light guide plate 11. The second sealing member 62 is disposed on the vertical surface between the light guide plate 11 and the front panel 5, as shown in fig. 7, thereby achieving the effects of bonding, adhering and fixing the light guide plate 11 and the front panel 5. For some glue, the advantage that this embodiment adopted the waterproof glue layer of preforming lies in directly cup jointing during the equipment can, error when reducing personnel's rubberizing, reduce the tolerance and increase packaging efficiency.

In this embodiment, the electrical connector further includes an outer frame 3 fixed to the rear housing 4 and connected to the front panel 5 through a third sealing member 8, where the third sealing member 8 may be an annular side waterproof rubber strip, and the design and effect thereof are similar to those of the second sealing member 62, and therefore are not described in detail.

In addition to the foregoing embodiments, the light incident end surface 141 may further have a groove (not shown), preferably formed by more than three sides, into which the power source 22 enters after the circuit board 21 is inserted into the first carrying groove 71 and the second carrying groove 72, so as to further reduce the light incident loss. In addition, the number of the front panel through holes, the light outlet rings and the board end joints is not limited to 2, and may be four if necessary, and are arranged in a matrix (not shown). Correspondingly, the light incident structure 14 is disposed inside the light guide plate 11 at a position corresponding to the center of the matrix of the light emergent rings, and the number of the side inclined surfaces of the light incident structure 14 is at least four (not shown), that is, the light incident end surfaces 141 are respectively inclined in the left upper direction, the left lower direction, the right upper direction and the right lower direction. The invention does not limit the number of the front panel perforation and the light emitting ring to be two or four, as long as the light emitting ring is arranged outside the light guide plate 11 and corresponds to the area taking the light incident structure 14 as the geometric center, and the side inclined surface of the light incident structure 14 is arranged to incline towards each light emitting ring direction from the light incident end surface 141, no matter the number of the front panel perforation and the light emitting ring is three, five or eight, the technical scheme claimed by the invention is adopted. In addition, as shown in the embodiment of fig. 1, only one light source 22 can achieve basic light emitting and light uniformizing effects on the first light emitting ring 12 and the second light emitting ring 13, but when the requirement on the light uniformity is high, an additional light incident structure 14 and a light source 22 may be disposed on each edge or end side of the light guiding element 1, that is, the present invention is not limited to only a single light source.

The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.