Display apparatus, door body, and cabinet body

1 . A display device, comprising:

an information collecting assembly configured to collect environment information;

a communication module configured to perform wireless-communication linking to an Internet-of-Things device, to transmit the environment information to the Internet-of-Things device, and receive multimedia information sent by the Internet-of-Things device; and

a display module configured to display the multimedia information, and/or display the environment information, wherein:

the multimedia information comprises at least audio-video advertisement information;

the environment information comprises flow-rate information, the information collecting assembly comprises a flow-rate-information collecting module, and the flow-rate-information collecting module is disposed at one side of a light-exiting face of the display module; and

the flow-rate-information collecting module is configured to collect human-body image information in an environment located at one side of a light-exiting face of a display screen, and based on the human-body image information collected within a target time duration, determine the flow-rate information;

the human-body image information comprises depth information, and the flow-rate-information collecting module comprises a time-of-flight camera (TOF) module; the TOF module comprises an infrared-laser emitting module, a time sensor, a calculating component and a sensing camera lens;

the infrared-laser emitting module is configured to emit an infrared laser, and the sensing camera lens is configured to gather the infrared laser that is reflected back;

the time sensor is configured to, based on the infrared laser gathered by the sensing camera lens, generate the depth information;

the calculating component is configured to, based on the depth information generated by the time sensor, determine the flow-rate information in a refrigerator exterior environment;

the TOF module further comprises a structure support, and a first bearing plate and a second bearing plate fixed to two sides of the structure support, respectively;

the infrared-laser emitting module and the calculating component are fixed to the first bearing plate, and the time sensor is fixed to the second bearing plate; and

the first bearing plate is provided with a camera-lens through hole, the structure support is provided with a support through hole corresponding to the camera-lens through hole, and the sensing camera lens passes through the support through hole and is fixed inside the camera-lens through hole.

2 . The device according to claim 1 , wherein a quantity of the information collecting assembly is more than one, different information collecting assemblies are configured to collect category information corresponding to different objects in an environment, the objects comprise human bodies and articles in the environment, and the category information comprises image category information and voice category information.

3 . The device according to claim 1 , wherein the environment information comprises voice information, and the information collecting assembly further comprises a voice-information collecting module; the voice-information collecting module is configured to, when an external-target signal is sensed by the voice-information collecting module, collect the voice information;

the communication module is configured to transmit the voice information to an Internet of Things, and acquire target multimedia information corresponding to the voice information from the Internet of Things; and

the display module is configured to display the target multimedia information, and display the environment information corresponding to the voice information.

4 . The device according to claim 3 , wherein the voice-information collecting module comprises a photoelectric switch, the photoelectric switch comprises an outer shell embedded into one side of a light-exiting face of the display module, and a target pattern is concavely or convexly engraved at the outer shell; and

the photoelectric switch is configured to, when the external-target signal is sensed by the photoelectric switch, control the voice-information collecting module to collect the voice information, and lighten the target pattern.

5 . The device according to claim 1 , wherein the environment information comprises image information of an environment located at one side of a light-exiting face of the display module, and the information collecting assembly further comprises a frontally placed image collecting module configured to, in an on-state, collect the image information of the environment at the one side of the light-exiting face of the display module.

6 . The device according to claim 1 , wherein when the environment information comprises image information and voice information of an environment of one side of a light-exiting face of the display module, the device further comprises a support;

wherein both of a voice-information collecting module for collecting the voice information and a frontally placed image collecting module for collecting the image information are integrated on the support.

7 . The device according to claim 1 , wherein the environment information comprises article information in an environment at one side away from a light-exiting face of the display module; the information collecting assembly comprises a rear placed image collecting module, and the rear placed image collecting module comprises a built-in camera, an angle sensor and a controlling unit;

the angle sensor is configured to detect an opening angle of the display module; and

the controlling unit is configured to, when the opening angle is greater than or equal to a preset angle, trigger the built-in camera to perform image collection to the environment at the one side away from the light-exiting face of the display module, to obtain the article information in the environment.

8 . The device according to claim 1 , wherein the display module sequentially comprises, starting from the light-exiting face, a glass cover plate, a liquid-crystal display panel, a light equalizing device, a light guiding plate, a reflector plate, a light bar and a metal back plate.

9 . The device according to claim 8 , wherein a plurality of heat dissipating fins are disposed at the light bar, and a groove is disposed at a surface of each of the heat dissipating fins.

10 . The device according to claim 1 , wherein the communication module comprises a wireless-communication device and a housing covering the wireless-communication device, and the housing is provided with a plurality of heat dissipating holes.

11 . The device according to claim 10 , wherein the heat dissipating holes are strip-shaped heat dissipating holes, and gap lengths of the strip-shaped heat dissipating holes are between 31 millimeters and 50 millimeters.

12 . A door body, wherein the door body comprises the display device according to claim 1 .

13 . The door body according to claim 12 , wherein the door body further comprises a door frame, and the door frame is configured to install the display device.

14 . The door body according to claim 13 , wherein the door frame and the display device are rotatably connected to each other, in a retracting state, the display device is located in a plane where the door body is located, and in an opening state, the display device rotates out of the plane where the door body is located.

15 . The door body according to claim 14 , wherein the door body further comprises a rotating member, one side of the display device is rotatably connected to one side of the door frame by the rotating member, and the other side of the display device is embedded into the other side of the door frame.

16 . The door body according to claim 15 , wherein the door body further comprises a positioning member, one end of the positioning member is detachably mounted to the other side of the door frame, and the other side of the display device is connected to the positioning member.

17 . A cabinet body, wherein the cabinet body has an object storing space, and comprises the door body according to claim 12 ; and a light-exiting face of the display device is opposite to the object storing space.