CN212034159U

CN212034159U - Terminal device

Info

Publication number: CN212034159U
Application number: CN202021196976.8U
Authority: CN
Inventors: 马颖江; 张轶; 马金山; 谢明
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2020-11-27
Anticipated expiration: 2030-06-24

Abstract

The utility model provides a terminal. The terminal includes: a front camera; the display screen comprises a display area and a light supplement area, and the light supplement area is arranged around the display area; a first light guide member disposed at a rear side of the light supplement region; the first light-emitting component comprises a first light-emitting part, and a light-emitting end of the first light-emitting part is arranged towards the first light guide component, so that light emitted by the first light-emitting part is emitted from the light supplementing area after passing through the first light guide component. The utility model discloses a light filling luminance not enough problem of leading camera at terminal among the prior art has been solved at terminal.

Description

Terminal device

Technical Field

The utility model relates to an intelligent equipment field particularly, relates to a terminal.

Background

Along with the popularization of smart phones, the continuous improvement of mobile phone photographing effects and the convenience of mobile phone photographing, more and more people like to use mobile phones to perform self-photographing in various occasions, and especially under the condition that short video live broadcast such as jittering is popular, more and more scenes of self-photographing and live broadcast are realized by means of forward photographing. Simultaneously with it, the requirement that adopts the preceding shooting to carry out the scene light filling that auto heterodyne or live correspond also is more and more high, and at present, the user has screen light filling, anterior flash light moisturizing and external professional light filling lamp light filling in the main mode that adopts of preceding shooting light filling.

However, screen light supplementing and flash light supplementing are not strong enough in brightness, the light supplementing brightness and color temperature are single, the external light supplementing lamp is very good in brightness, color temperature and the like, and the external light supplementing lamp is not convenient to carry and is only used for self-shooting and live broadcasting in a very professional mode at present.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a terminal to solve the problem of insufficient light-compensating brightness of the front camera at the terminal in the prior art.

In order to achieve the above object, the present invention provides a terminal, including: a front camera; the display screen comprises a display area and a light supplement area, and the light supplement area is arranged around the display area; a first light guide member disposed at a rear side of the light supplement region; the first light-emitting component comprises a first light-emitting part, and a light-emitting end of the first light-emitting part is arranged towards the first light guide component, so that light emitted by the first light-emitting part is emitted from the light supplementing area after passing through the first light guide component.

Further, the first light emitting part includes a plurality of first light emitting parts including at least one second light emitting part and at least one third light emitting part, and a color temperature of the second light emitting part is different from a color temperature of the third light emitting part.

Further, the terminal has a first power supply unit having a plurality of power supply terminals including a first power supply terminal and a second power supply terminal; the first power supply terminal is connected to the second light emitting part, and the second power supply terminal is connected to the third light emitting part.

Furthermore, the display screen comprises a display screen body, and the display screen body is made of glass; the display screen body of the display area is provided with a gap for filling liquid crystal.

Furthermore, the light supplement area comprises a first light supplement area and a second light supplement area, and the first light supplement area and the second light supplement area are arranged on two opposite sides of the display area.

Furthermore, the first light supplement area and the second light supplement area are both strip-shaped, and the first light supplement area and the second light supplement area extend along a first preset direction of the terminal.

Further, the terminal further includes: a second light guide member disposed at a rear side of the display area; and the second light-emitting part comprises a fourth light-emitting part, and the light-emitting end of the fourth light-emitting part faces the second light-guiding part so that light emitted by the fourth light-emitting part is emitted from the display area after passing through the second light-guiding part.

Further, the first light emitting component comprises a first light emitting assembly and a second light emitting assembly, and the first light emitting assembly and the second light emitting assembly respectively comprise a plurality of first light emitting parts; the first light guide component comprises a first light guide plate and a second light guide plate, the first light guide plate and the second light guide plate are arranged on two opposite sides of the second light guide component, and the first light guide plate and the second light guide plate extend along a first preset direction of the terminal; the light-emitting end of the first light-emitting part of the first light-emitting component is arranged towards the first light guide plate, and the light-emitting end of the first light-emitting part of the second light-emitting component is arranged towards the second light guide plate; the first light emitting assembly is arranged above or below the first light guide plate, and the second light emitting assembly is arranged above or below the second light guide plate.

Further, the second light emitting part includes a plurality of fourth light emitting parts, and the first light emitting assembly and the second light emitting assembly are disposed at opposite sides of the plurality of fourth light emitting parts.

Further, the plurality of first light emitting portions of the first light emitting module includes at least one second light emitting portion and at least one third light emitting portion; and/or the plurality of first light-emitting parts of the second light-emitting assembly comprise at least one second light-emitting part and at least one third light-emitting part.

Further, the first light-guiding member is located on the rear side of the second light-guiding member; the first light-emitting component is positioned at the rear side of the second light-emitting component, and the plurality of first light-emitting components are arranged at intervals along the left-right direction of the terminal; the first light-emitting part and the second light-emitting part are both positioned above or below the first light-guiding part.

Further, a first light-shielding plate is disposed between the first and second light-emitting parts.

Furthermore, the first light guide component is U-shaped, the first light guide component comprises a third light guide plate, a fourth light guide plate and a fifth light guide plate, the third light guide plate and the fourth light guide plate are connected with the fifth light guide plate, the third light guide plate and the fourth light guide plate are arranged on two opposite sides of the fifth light guide plate and are arranged in parallel, and the fifth light guide plate is vertical to the third light guide plate; the light-emitting ends of the first light-emitting parts are arranged opposite to the fifth light guide plate and are positioned on one side, far away from the third light guide plate, of the fifth light guide plate.

The utility model discloses a terminal includes leading camera, display screen, first light guide component and first light-emitting component, and this terminal sets up the light filling region through the lateral part at the display area of display screen to the light that makes first light-emitting component send jets out by the light filling region after the light guide effect of first light guide component, realizes the light filling to leading camera, has solved the not enough problem of light filling luminance of the leading camera at the terminal among the prior art.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic structural diagram of an embodiment of a terminal according to the present invention;

fig. 2 shows a schematic structural diagram of a display screen of a terminal according to the present invention;

fig. 3 shows a schematic structural view of a first light-guiding member, a first light-emitting member, a second light-guiding member and a second light-emitting member according to a first embodiment of the terminal of the present invention;

fig. 4 shows a schematic structural view of a first light-guiding member, a second light-guiding member and a second light-emitting member according to a second embodiment of the terminal of the present invention;

fig. 5 shows a control diagram of a first light emitting component of the terminal according to the present invention;

fig. 6 shows a flowchart of a light supplement method for a camera according to the present invention.

Wherein the figures include the following reference numerals:

10. a display screen; 11. a display area; 12. a light supplement area; 121. a first supplementary lighting area; 122. a second supplementary lighting area; 13. a display screen body; 20. a first light guide member; 21. a first light guide plate; 22. a second light guide plate; 23. a third light guide plate; 24. a fourth light guide plate; 25. a fifth light guide plate; 30. a first light emitting element; 31. a first light emitting section; 34. a first light emitting assembly; 35. a second light emitting element; 40. a second light guide member; 50. a second light emitting part; 51. a fourth light emitting section; 60. a first power supply unit; 70. a first power supply branch; 80. and a second power supply branch.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The utility model provides a terminal please refer to fig. 1 to fig. 5, include: a front camera; the display screen 10, the display screen 10 includes the display area 11 and the area 12 of light filling, the area 12 of light filling is set up around the display area 11; a first light guide 20 disposed behind the light supplement region 12; the first light emitting member 30 includes a first light emitting portion 31, and a light emitting end of the first light emitting portion 31 is disposed toward the first light guiding member 20, so that light emitted from the first light emitting portion 31 passes through the first light guiding member 20 and is emitted from the fill light region 12.

The utility model discloses a terminal includes leading camera, display screen 10, first light guide component 20 and first light-emitting component 30, this terminal sets up the light filling region 12 through the lateral part at display screen 10's display area 11, and the light that makes first light-emitting component 30 send out jets out by the regional 12 of light filling after the light guide effect of first light guide component 20, the realization is to the light filling of leading camera, the problem that the light filling luminance of the leading camera at the terminal among the prior art is not enough has been solved.

Specifically, the terminal is a mobile phone, a tablet, or the like.

In this embodiment, the terminal further includes a glass cover plate, the display screen 10 is disposed at the rear side of the glass cover plate, and light emitted from the light supplement region 12 passes through the glass cover plate and is emitted from the glass cover plate. Wherein, the rear side refers to the rear side in the front-rear direction of the hand-held terminal when the terminal is normally used.

In the present embodiment, the display screen 10 is an LCD display screen, i.e., a liquid crystal display screen. The display area 11 and the light supplement area 12 are made of a piece of complete glass, liquid crystal molecules are not injected into part of the display screen 10 of the light supplement area 12 in the processing process, and liquid crystal molecules are injected into part of the display screen 10 of the display area 11.

In the present embodiment, the first light emitting part 30 includes a plurality of first light emitting parts 31, and the plurality of first light emitting parts 31 includes at least one second light emitting part and at least one third light emitting part, and the color temperature of the second light emitting part and the color temperature of the third light emitting part are different. The problem that the light supplementing color temperature of the current mobile phone with the front camera light supplementing lamp is insufficient is solved through the arrangement.

In the present embodiment, the terminal has a first power supply unit 60, the first power supply unit 60 having a plurality of power supply terminals including a first power supply terminal and a second power supply terminal; the first power supply terminal is connected to the second light emitting part, and the second power supply terminal is connected to the third light emitting part. Such an arrangement enables the brightness and color temperature of the first and second light-emitting portions to be adjusted separately.

In specific implementation, the terminal has a first power supply branch 70 and a second power supply branch 80, the first power supply branch 70 is connected with the first power supply end, and the second light-emitting part is arranged on the first power supply branch 70; the second power supply branch 80 is connected to the second power supply terminal, and the third light emitting part is provided on the second power supply branch 80. Wherein D11 to D1n in FIG. 5 represent the second light-emitting part, and D21 to D2n in FIG. 5 represent the third light-emitting part.

In a specific implementation, the brightness and the color temperature displayed by the plurality of first light emitting parts 31 can be adjusted by adjusting the corresponding current.

As shown in the control schematic block diagram of the first light-emitting component 30 shown in fig. 5, at least two power chips are required for controlling the whole first light-emitting component 30, the voltage output by the power chip PMU1 passes through the boost circuit controlled by the power PMU2 as a core and then outputs a supply voltage satisfying the first light-emitting component 30, the first light-emitting component 30 at least includes LED lamps of two color temperatures, the brightness and the enabling of the lamp of the same color temperature are controlled independently, the same serial LED path must be the lamp of the same color temperature, and the enabling and the brightness of each group of serial LED lamps are controlled by the power PMU 2. Where power PMU2 is first power supply unit 60.

In this embodiment, the display screen 10 includes a display screen body 13, and the display screen body 13 is made of glass; wherein the display screen body 13 of the display area 11 has a gap for filling liquid crystal. Specifically, the whole display screen body 13 is divided into a liquid crystal region and a non-liquid crystal region, the non-liquid crystal region is distributed on two sides of the liquid crystal region, the liquid crystal region and the non-liquid crystal region share one piece of complete glass, liquid crystal is not injected into the non-liquid crystal region in the processing process, the liquid crystal region is used for normal display of a screen, and light emitted by a display backlight source (namely, the second light emitting component 50) passes through a display light guide plate (namely, the second light guide component 40) and the liquid crystal region and is controlled by liquid crystal to realize normal display; the non-liquid crystal area is used for prepositive light supplement; and light emitted by the light supplement backlight source is uniformly guided to the light supplement area under the action of the light supplement light guide plate. The liquid crystal region corresponds to the display region 11, and the non-liquid crystal region corresponds to the light supplement region 12.

In this embodiment, the light supplement region 12 includes a first light supplement region 121 and a second light supplement region 122, and the first light supplement region 121 and the second light supplement region 122 are disposed at two opposite sides of the display region 11. The light supplementing effect is good.

In this embodiment, the first light supplement region 121 and the second light supplement region 122 are both in a strip shape, and the first light supplement region 121 and the second light supplement region 122 extend along a first preset direction of the terminal.

Specifically, the first supplementary lighting region 121 and the second supplementary lighting region 122 extend in the up-down direction of the terminal. Wherein, the up-down direction of the terminal is the up-down direction of the handheld terminal in normal use.

In this embodiment, the terminal further includes: a second light guide 40 disposed at a rear side of the display region 11; the second light emitting member 50 includes a fourth light emitting portion 51, and a light emitting end of the fourth light emitting portion 51 is disposed toward the second light guiding member 40 so that light emitted from the fourth light emitting portion 51 passes through the second light guiding member 40 and is emitted from the display region 11.

In the first embodiment, the first light emitting part 30 includes a first light emitting assembly 34 and a second light emitting assembly 35, each of the first light emitting assembly 34 and the second light emitting assembly 35 includes a plurality of first light emitting parts 31; the first light guide member 20 includes a first light guide plate 21 and a second light guide plate 22, the first light guide plate 21 and the second light guide plate 22 are disposed at opposite sides of the second light guide member 40, and the first light guide plate 21 and the second light guide plate 22 extend in a first preset direction of a terminal; the light emitting end of the first light emitting part 31 of the first light emitting assembly 34 is disposed toward the first light guide plate 21, and the light emitting end of the first light emitting part 31 of the second light emitting assembly 35 is disposed toward the second light guide plate 22; the first light emitting assembly 34 is disposed above or below the first light guide plate 21, and the second light emitting assembly 35 is disposed above or below the second light guide plate 22. Specifically, the first light guide plate 21 and the second light guide plate 22 each extend in the up-down direction of the terminal. Wherein the first light emitting assembly 34 and the second light emitting assembly 35 are independent of each other.

Wherein, the first light emitting assembly 34 and the second light emitting assembly 35 are disposed on the same side of the second light guide plate 22 (or the first light guide plate 21).

In a specific implementation, the plurality of first light emitting parts 31 of the first light emitting assembly 34 are arranged at intervals along the left-right direction of the terminal; the plurality of first light emitting portions 31 of the second light emitting module 35 are disposed at intervals in the left-right direction of the terminal. The left and right directions of the terminal are the left and right directions of the handheld terminal when the terminal is normally used.

In the first embodiment, the second light emitting part 50 includes a plurality of fourth light emitting parts 51, and the first light emitting assembly 34 and the second light emitting assembly 35 are disposed at opposite sides of the plurality of fourth light emitting parts 51. The fourth light emitting units 51 are provided at intervals in the left-right direction of the terminal.

In the first embodiment, the plurality of first light-emitting portions 31 of the first light-emitting module 34 includes at least one second light-emitting portion and at least one third light-emitting portion; and/or, the plurality of first light emitting parts 31 of the second light emitting assembly 35 includes at least one second light emitting part and at least one third light emitting part.

In the first embodiment, a second light-shielding plate is disposed between the first light emitting assembly 34 and the second light emitting member 50, and a third light-shielding plate is disposed between the second light emitting assembly 35 and the second light emitting member 50. Such an arrangement ensures that the first light emitting member 30 and the second light emitting member 50 do not interfere with each other.

In the second embodiment, the first light-guiding member 20 is located at the rear side of the second light-guiding member 40; the first light emitting part 30 is positioned at the rear side of the second light emitting part 50, and a plurality of first light emitting parts 31 are arranged at intervals in the left-right direction of the terminal; the first and second

light emitting members

30 and 50 are positioned above or below the first light guide member 20. The second light emitting part 50 in this embodiment also includes a plurality of fourth light emitting parts 51. Wherein, the rear side refers to the rear side in the front-rear direction of the hand-held terminal when the terminal is normally used.

In the second embodiment, a first light-shielding plate is disposed between the first and second light-emitting

parts

30 and 50. Such an arrangement ensures that the first light emitting member 30 and the second light emitting member 50 do not interfere with each other.

In the second embodiment, the first light guide member 20 is U-shaped, the first light guide member 20 includes a third light guide plate 23, a fourth light guide plate 24 and a fifth light guide plate 25, the third light guide plate 23 and the fourth light guide plate 24 are connected to the fifth light guide plate 25, the third light guide plate 23 and the fourth light guide plate 24 are disposed on two opposite sides of the fifth light guide plate 25 and are disposed in parallel, and the fifth light guide plate 25 is perpendicular to the third light guide plate 23; the light emitting end of each first light emitting portion 31 is disposed opposite to the fifth light guide plate 25 and is located on a side of the fifth light guide plate 25 away from the third light guide plate 23.

The problem that present cell-phone is not convenient for carry from taking the not enough and external specialty light filling lamp light filling luminance of preceding light filling lamp light filling luminance and colour temperature is solved in this application.

The beneficial effect of this application utilizes the cell-phone from taking the effect that the light filling lamp reaches luminance and the soft light filling of colour temperature adjustable for realizing that the cell-phone is taken forward when autodyne or live.

This application increases muscle light filling backlight (being first light-emitting component 30) and regional light guide plate of light filling (first light-guiding component 20) on the basis of the current LCD display screen structure of cell-phone, the light filling backlight includes the LED of two kinds of colour temperatures at least, the luminance and the colour temperature accessible of light filling backlight are adjusted to the electric current that corresponds the lamp, when opening leading camera and shoot or when video, the user can select automatic light filling and manual light filling two kinds of modes, when selecting automatic light filling, reach best light filling effect according to the luminance and the colour temperature of software algorithm automatically regulated light filling backlight, when selecting manual mode, the user selects suitable luminance and dual colour temperature according to oneself demand.

The utility model also provides a light filling method of camera, please refer to FIG. 6, the light filling method of camera includes: opening a front camera of the terminal; detecting whether the first light emitting part 30 of the terminal is turned on; detecting whether the light supplement mode of the first light emitting component 30 is in the automatic light supplement mode or the manual light supplement mode when detecting that the first light emitting component 30 is turned on; when detecting that the first light emitting component 30 is in the automatic light supplement mode, adjusting the first light emitting component 30 to supplement light; when detecting that the first light emitting part 30 is in the manual fill-in mode, fill-in light through manual operation; in the case where it is detected that the first lighting part 30 is turned off, photographing is performed by the front camera.

In this embodiment, adjusting the first light emitting component 30 to supplement light includes: and adjusting the brightness and the color temperature of the second light-emitting part of the terminal and the brightness and the color temperature of the third light-emitting part of the terminal according to the light sensing condition of the front camera.

In specific implementation, when detecting that the first light-emitting component 30 is in the automatic light supplement mode, the terminal controls the power PMU2 to automatically adjust the brightness and the color temperature of the first light-emitting component 30 according to the light sensing condition of the camera.

In specific implementation, when detecting that the first light-emitting component 30 is in the manual light-supplementing mode, the user may manually adjust the brightness and the color temperature of the first light-emitting component 30 to achieve a light-supplementing effect that is satisfied by the user.

The light supplement lamp in fig. 6 is the first light emitting component 30, the intelligent light supplement mode in fig. 6 is the automatic light supplement mode, and the front camera in fig. 6 is the front camera.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A terminal, comprising:

a front camera;

the display screen (10), the display screen (10) includes a display area (11) and a supplementary lighting area (12), and the supplementary lighting area (12) is arranged around the display area (11);

a first light guide member (20) disposed behind the supplementary light region (12);

and the first light-emitting component (30) comprises a first light-emitting part (31), and the light-emitting end of the first light-emitting part (31) is arranged towards the first light guide component (20) so that light emitted by the first light-emitting part (31) passes through the first light guide component (20) and then is emitted from the light supplement area (12).

2. A terminal according to claim 1, wherein said first light-emitting member (30) comprises a plurality of first light-emitting portions (31), and wherein said plurality of first light-emitting portions (31) comprises at least one second light-emitting portion and at least one third light-emitting portion, the color temperature of said second light-emitting portion being different from the color temperature of said third light-emitting portion.

3. A terminal according to claim 2, characterized in that the terminal has a first power supply unit (60), the first power supply unit (60) having a plurality of power supply terminals including a first power supply terminal and a second power supply terminal; the first power supply terminal is connected to the second light emitting part, and the second power supply terminal is connected to the third light emitting part.

4. A terminal according to claim 1, characterized in that the display (10) comprises a display body (13), the display body (13) being glass; wherein the display screen body (13) of the display area (11) has a gap for filling liquid crystal.

5. The terminal according to claim 1, wherein the supplementary light region (12) comprises a first supplementary light region (121) and a second supplementary light region (122), and the first supplementary light region (121) and the second supplementary light region (122) are disposed on opposite sides of the display region (11).

6. The terminal according to claim 5, wherein the first light supplement region (121) and the second light supplement region (122) are both strip-shaped, and the first light supplement region (121) and the second light supplement region (122) extend along a first preset direction of the terminal.

7. The terminal of claim 2, further comprising:

a second light guide member (40) provided on the rear side of the display region (11);

and a second light emitting member (50) including a fourth light emitting portion (51), wherein a light emitting end of the fourth light emitting portion (51) is disposed toward the second light guide member (40) so that light emitted from the fourth light emitting portion (51) passes through the second light guide member (40) and is emitted from the display region (11).

8. A terminal according to claim 7, characterized in that said first light emitting means (30) comprises a first light emitting assembly (34) and a second light emitting assembly (35), said first light emitting assembly (34) and said second light emitting assembly (35) each comprising a plurality of said first light emitting portions (31);

the first light guide member (20) includes a first light guide plate (21) and a second light guide plate (22), the first light guide plate (21) and the second light guide plate (22) are disposed at opposite sides of the second light guide member (40), and the first light guide plate (21) and the second light guide plate (22) extend in a first preset direction of the terminal; a light emitting end of the first light emitting portion (31) of the first light emitting unit (34) is disposed toward the first light guide plate (21), and a light emitting end of the first light emitting portion (31) of the second light emitting unit (35) is disposed toward the second light guide plate (22);

wherein the first light emitting assembly (34) is disposed above or below the first light guide plate (21), and the second light emitting assembly (35) is disposed above or below the second light guide plate (22).

9. A terminal according to claim 8, characterized in that said second light emitting member (50) comprises a plurality of fourth light emitting portions (51), said first light emitting assembly (34) and said second light emitting assembly (35) being arranged on opposite sides of said plurality of fourth light emitting portions (51).

10. A terminal according to claim 8, wherein the plurality of first light emitting portions (31) of the first light emitting assembly (34) comprises at least one of the second light emitting portions and at least one of the third light emitting portions; and/or the plurality of first light-emitting parts (31) of the second light-emitting assembly (35) comprise at least one second light-emitting part and at least one third light-emitting part.

11. A terminal end according to claim 7, wherein the first light-guiding member (20) is located at a rear side of the second light-guiding member (40); the first light emitting part (30) is positioned at the rear side of the second light emitting part (50), and a plurality of first light emitting parts (31) are arranged at intervals along the left and right direction of the terminal;

the first light emitting member (30) and the second light emitting member (50) are both located above or below the first light guide member (20).

12. A terminal according to claim 11, wherein a first light insulating panel is provided between the first light emitting component (30) and the second light emitting component (50).

13. A terminal according to claim 11, wherein the first light guide member (20) is U-shaped, the first light guide member (20) comprises a third light guide plate (23), a fourth light guide plate (24) and a fifth light guide plate (25), the third light guide plate (23) and the fourth light guide plate (24) are connected to the fifth light guide plate (25), the third light guide plate (23) and the fourth light guide plate (24) are disposed at two opposite sides of the fifth light guide plate (25) and are disposed in parallel, and the fifth light guide plate (25) is perpendicular to the third light guide plate (23);

the light emitting end of each first light emitting part (31) is arranged opposite to the fifth light guide plate (25) and is positioned on one side, far away from the third light guide plate (23), of the fifth light guide plate (25).