CN217426152U

CN217426152U - Face recognition machine with light filling structure

Info

Publication number: CN217426152U
Application number: CN202221118917.8U
Authority: CN
Inventors: 崔俊; 肖传宝; 王月平
Original assignee: Hangzhou Moredian Technology Co ltd
Current assignee: Hangzhou Moredian Technology Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-09-13
Anticipated expiration: 2032-05-09

Abstract

The utility model relates to a face identification machine with light filling structure, including the organism, the organism includes the protecgulum, still is equipped with LED lamp plate and light guide plate in the organism, and the LED lamp plate sets up in the side of light guide plate, and the LED lamp on the LED lamp plate sets up towards the light guide plate for in conducting the light of LED lamp to the light guide plate; the position of the front cover corresponding to the light guide plate is transparent or semitransparent. Its advantage lies in, utilizes the light of light guide plate guide LED lamp, realizes that less LED lamp gives off more light, can reduce the quantity of LED lamp, reduces PCB's material cost and paster cost, reduces the required power of LED lamp, reaches energy-conserving purpose, can also reduce the heat that the inside LED lamp of organism produced, makes the heat dissipation design of organism simpler.

Description

Face recognition machine with light filling structure

Technical Field

The utility model relates to a face identification technical field especially relates to a face identification machine with light filling structure.

Background

When face recognition technology was used at access control machine, attendance machine, brush face payment equipment, under the not enough condition of light luminance, needed to increase similar lighting apparatus's light filling lamp. The realization mode of light filling lamp mainly directly sends out the light mode through the LED lamp in the existing market, needs the white light lamp PCB board of great area, and the quantity of LED lamp is more (more than 40pcs usually), needs the PCB board of great size, and whole material cost and paster cost are higher, simultaneously because LED etc. are in large quantity, and power is great, and the inside heat of complete machine is too high.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the defect among the prior art to a face identification machine with light filling structure is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a face recognition machine with a light supplementing structure comprises a machine body, wherein the machine body comprises a front cover, an LED lamp panel and a light guide plate are further arranged in the machine body, the LED lamp panel is arranged on the side face of the light guide plate, and an LED lamp on the LED lamp panel is arranged towards the light guide plate and used for transmitting light rays of the LED lamp into the light guide plate; the position of the front cover corresponding to the light guide plate is transparent or semitransparent.

Preferably, a reflective film is arranged on one surface of the light guide plate, which faces away from the front cover, and the shape of the reflective film is matched with that of the light guide plate.

Preferably, a light protection plate is arranged on one surface of the reflective film, which faces away from the light guide plate, and the light protection plate is made of opaque materials.

Preferably, one surface of the front cover facing the light guide plate is provided with an installation groove, the shape of the installation groove is matched with that of the light guide plate, and the light guide plate, the reflective film and the light protection plate are embedded into the installation groove; and the light protection plate is provided with a protective edge protruding towards the front cover, and the protective edge and the mounting groove are matched to surround the light guide plate.

Preferably, the light guide plate, the reflective membrane and protect the worn-out fur and be arc, two the LED lamp plate is located in the breach of light guide plate, it is equipped with the opening to protect the worn-out fur to correspond the LED lamp plate, makes one LED lamp on the LED lamp plate towards one side breach limit of light guide plate shines, and another LED lamp on the LED lamp plate towards the opposite side breach limit of light guide plate shines.

Preferably, one surface of the light reflecting film facing the light guide plate is white, and one surface of the light protection plate facing the light reflecting film is white.

Preferably, the LED lamp panel further includes an aluminum substrate, and at least one of the LED lamps is disposed on the aluminum substrate.

Preferably, the face recognition machine with the light supplementing structure further comprises a heat radiating fin, the heat radiating fin is connected with the aluminum substrate, and the heat radiating fin extends outwards from the notch of the light guide plate, so that the area of the heat radiating fin is larger than that of the notch of the light guide plate.

Preferably, the heat dissipation sheet is made of aluminum, a cavity is formed in one surface, facing the light guide plate, of the front cover, part of the heat dissipation sheet is located in the notch of the light guide plate, and part of the heat dissipation sheet is located in the cavity.

The face recognition machine with the light supplementing structure is characterized in that the light guide plate is made of transparent PMMA materials and is manufactured by adopting a plastic mold process, and an optical dot matrix is arranged on the surface of the light guide plate.

Compared with the prior art, the beneficial effects of the utility model reside in that:

compared with the prior mode of directly emitting light by using the LED lamp, the light guide plate is used for guiding the light rays of the LED lamp, so that fewer LED lamps emit more light, the number of the LED lamps can be reduced, the material cost and the patch cost of a PCB (printed circuit board) are reduced, the power required by the LED lamp is reduced, the energy-saving purpose is achieved, the heat generated by the LED lamp in the machine body can be reduced, and the heat dissipation design of the machine body is simpler; the position that the protecgulum corresponds with light guide plate 3 is transparent or translucent, is equipped with the printing opacity portion on the protecgulum promptly, makes things convenient for the light of light guide plate to see through from the protecgulum, reaches the light filling effect.

Drawings

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

Fig. 1 is a schematic structural diagram of a face recognition machine provided in an embodiment of the present invention.

Fig. 2 is a schematic diagram of a front cover and a light supplement structure in the face recognition machine shown in fig. 1.

Fig. 3 is an exploded schematic view of the front cover and the light supplement structure shown in fig. 2.

Fig. 4 is an exploded view of the front cover and the light filling structure shown in fig. 2 from another angle.

Description of reference numerals:

1. a body; 11. a front cover; 111. mounting grooves; 112. a cavity; 113. a light-transmitting portion; 12. a face recognition lens; 2. an LED lamp panel; 21. an LED lamp; 22. an aluminum substrate; 3. a light guide plate; 31. a notch; 4. a light-reflecting film; 5. a light protection plate; 51. protecting edges; 52. an opening; 6. a heat sink; 61. a trapezoidal portion; 62. a square portion; 63. and (4) a bump.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 4, the embodiment of the present invention provides a face recognition machine with a light supplement structure, which includes a machine body 1, the machine body 1 is used for installing various electrical components, such as a face recognition lens 12 and a control circuit board, and of course, the light supplement structure of the present embodiment further generally defines a face of the machine body 1 facing a user as a front cover 11, the light supplement structure includes an LED lamp panel 2 and a light guide plate 3, the LED lamp panel 2 is disposed on a side surface of the light guide plate 3, and an LED lamp 21 on the LED lamp panel 2 is disposed toward the light guide plate 3 for transmitting light of the LED lamp 21 into the light guide plate 3, so that light emitted by the light supplement structure is not directly emitted by the LED lamp 21, and is then emitted after being transmitted by the light guide plate 3, the light guide plate 3 has good light guiding performance, compared with the existing mode of directly emitting light by using the LED lamp 21, the present embodiment uses the light guide plate 3 to guide light of the LED lamp 21, the number of the LED lamps 21 can be reduced, the material cost and the patch cost of the PCB can be reduced, the power required by the LED lamps 21 can be reduced, the energy-saving purpose can be achieved, the heat generated by the LED lamps 21 in the machine body 1 can be reduced, and the heat dissipation design of the machine body 1 is simpler; the position of the front cover 11 corresponding to the light guide plate 3 is transparent or translucent, that is, the light transmission part 113 is arranged on the front cover 11, so that the light of the light guide plate 3 can be conveniently transmitted out from the front cover 11, and a light supplementing effect is achieved.

Preferably, the light guide plate 3 is made of transparent PMMA, is manufactured by adopting a plastic mold process, is provided with an optical lattice on the surface, and can be processed by adopting a collision point and laser process on the surface of the mold to achieve the purposes of uniform light, softness and no glare. The reflective film is made of white PC material, and the light protection plate is made of white ABS material.

Preferably, a reflective film 4 is disposed on a surface of the light guide plate 3 opposite to the front cover 11, the shape of the reflective film 4 is adapted to the shape of the light guide plate 3, and the reflective film 4 is attached to a surface of the light guide plate 3 opposite to the front cover 11 and used for reflecting light of the light guide plate 3 towards the front cover 11, so as to further enhance the light intensity of the light guide plate 3.

Preferably, the one side that reflective membrane 4 dorsad light guide plate 3 is equipped with and protects bare board 5, protects bare board 5 and is light tight material, protects the effect of bare board 5 and also lies in reducing light that light guide plate 3 leaked in organism 1, and furthest is with light reflection to protecgulum 11 direction, guarantees the light filling luminance to can reduce the quantity of LED lamp 21.

Specifically, as shown in fig. 3 and fig. 4, a mounting groove 111 is formed in a surface of the front cover 11 facing the light guide plate 3, the shape of the mounting groove 111 is matched with the shape of the light guide plate 3, and the light guide plate 3, the reflective film 4 and the light protection plate 5 are embedded in the mounting groove 111; and protect the tabula rase 5 and have towards the protruding safe edge 51 of front cover 11, the safe edge 51 cooperates with mounting groove 111 and surrounds the light guide plate 3, make the light of the back and side of the light guide plate 3 all reflected back, send towards the front of the light of need to the maximum extent, guaranteed the fill light intensity. Preferably, the surface of the reflective film 4 facing the light guide plate 3 is white, and the surface of the light protection plate 5 facing the reflective film 4 is white, so that the reflected light is white light and is consistent with the light emitted from the LED lamp 21.

As shown in fig. 2 and fig. 4, the light guide plate 3, the reflective film 4 and the light protection plate 5 are all arc-shaped, preferably circular with a notch 31, so as to ensure uniformity of light when the face is irradiated, and preferably, the light guide plate 3 is arranged around the face recognition lens 12, so as to improve light supplement effect. Two LED lamp plates 2 are arranged in the notch 31 of the light guide plate 3, the light protection plate 5 is provided with an opening 52 corresponding to the LED lamp plate 2, so that the LED lamp 21 on one LED lamp plate 2 irradiates towards the notch 31 on one side of the light guide plate 3, the LED lamp 21 on the other LED lamp plate 2 irradiates towards the notch 31 on the other side of the light guide plate 3, the whole light guide plate 3 is ensured to uniformly emit light, and the phenomenon that the bright side on one side of the light guide plate 3 is dark is avoided.

Preferably, in order to improve the heat dissipation effect of the LED lamps 21, the LED lamp panel 2 further includes an aluminum substrate 22, and at least one LED lamp 21 is disposed on the aluminum substrate 22, as shown in fig. 2, two LED lamps 21 are disposed on one aluminum substrate 22, and when there are two LED lamp panels 2, the number of the LED lamps 21 is 4. Of course, in other embodiments, the number of the LED lamps 21 in one machine body 1 may be 1, 2, 3 or other numbers, preferably an even number, which can meet the use requirement.

Preferably, in order to further improve the heat dissipation effect, the light supplement structure further includes a heat dissipation fin 6, the heat dissipation fin 6 is connected to the aluminum substrate 22, and guides heat of the LED lamp 21 out of the aluminum substrate 22, so as to reduce the temperature of the aluminum substrate 22 and improve the heat dissipation effect. In order to make the heat sink 6 have a larger heat dissipation area and a better heat dissipation effect, the heat sink 6 extends outward from the notch of the light guide plate 3, so that the area of the heat sink 6 is larger than the area of the notch 31 of the light guide plate 3.

Preferably, the heat sink 6 is made of aluminum, the surface of the front cover 11 facing the light guide plate 3 is provided with a cavity 112, the heat sink 6 is partially located in the notch 31 of the light guide plate 3 and partially located in the cavity 112, specifically, the heat sink 6 includes a trapezoidal portion 61 and a square portion 62, the trapezoidal portion 61 is located in the notch 31 of the light guide plate 3, the shape of the trapezoidal portion is matched with the shape of the notch 31 of the light guide plate 3, the edges of two sides of the trapezoidal portion are provided with bumps 63, and the bumps 63 are fixedly attached to the aluminum substrate 22 on the same side, so that heat transfer is realized; the square portion 62 is located in the cavity 112 for enlarging a heat dissipation area. Trapezoidal portion 61 and square portion 62 formula structure as an organic whole, the heat conduction effect is better. Square portion 62 can with hold the laminating of chamber 112 inner wall, improve the stability of LED lamp plate 2, also can with hold and be equipped with heat dissipation clearance between the chamber 112 inner wall, promote the radiating effect.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A face recognition machine with a light supplementing structure comprises a machine body, wherein the machine body comprises a front cover, and the face recognition machine is characterized in that an LED lamp panel and a light guide plate are further arranged in the machine body, the LED lamp panel is arranged on the side face of the light guide plate, and an LED lamp on the LED lamp panel is arranged towards the light guide plate and used for transmitting light of the LED lamp into the light guide plate; the position of the front cover corresponding to the light guide plate is transparent or semitransparent.

2. The face recognition machine with the light supplementing structure according to claim 1, wherein a reflective film is disposed on a surface of the light guide plate facing away from the front cover, and a shape of the reflective film is adapted to a shape of the light guide plate.

3. The face recognition machine with a light supplementing structure as claimed in claim 2, wherein a light protecting plate is disposed on a surface of the reflective film facing away from the light guide plate, and the light protecting plate is made of opaque material.

4. The face recognition machine with a light supplementing structure according to claim 3, wherein a mounting groove is formed in a surface of the front cover facing the light guide plate, the shape of the mounting groove is matched with the shape of the light guide plate, and the light guide plate, the reflective film and the light protection plate are embedded in the mounting groove; and the light protection plate is provided with a protective edge protruding towards the front cover, and the protective edge and the mounting groove are matched to surround the light guide plate.

5. The face recognition machine with a light supplementing structure according to claim 4, wherein the light guide plate, the reflective film and the light protection plate are all arc-shaped, the two LED lamp plates are located in the notch of the light guide plate, the light protection plate is provided with an opening corresponding to the LED lamp plates, so that the LED lamp on one LED lamp plate irradiates towards the notch edge on one side of the light guide plate, and the LED lamp on the other LED lamp plate irradiates towards the notch edge on the other side of the light guide plate.

6. The face recognition machine with a light supplementing structure according to claim 3, wherein a surface of the light reflecting film facing the light guide plate is white, and a surface of the light protection plate facing the light reflecting film is white.

7. The face recognition machine with the light supplementing structure according to any one of claims 1 to 6, wherein the LED lamp panel further comprises an aluminum substrate, and at least one LED lamp is arranged on the aluminum substrate.

8. The face recognition machine with a light supplementing structure according to claim 7, further comprising a heat sink connected to the aluminum substrate, wherein the heat sink extends outward from the notch of the light guide plate, so that an area of the heat sink is larger than an area of the notch of the light guide plate.

9. The face recognition machine with the light supplementing structure according to claim 8, wherein the heat sink is made of aluminum, a cavity is formed in a surface of the front cover facing the light guide plate, and part of the heat sink is located in the notch of the light guide plate and part of the heat sink is located in the cavity.

10. The face recognition machine with the light supplementing structure according to any one of claims 1 to 6, wherein the light guide plate is made of transparent PMMA, is manufactured by a plastic mold process, and is provided with an optical lattice on the surface.