CN219346731U - Water tank assembly and cooling fan - Google Patents

Abstract

The application discloses a water tank subassembly and thermantidote belongs to the environmental electrical apparatus field. The water tank assembly comprises a water tank, a water gauge and a luminous mechanism. The water gauge is installed in the first lateral wall of water tank, and the water gauge is used for showing the inside water level of water tank. The light-emitting mechanism comprises a first light-transmitting piece and a light source, the first light-transmitting piece is arranged on the bottom wall of the water tank, the light source is positioned outside the water tank and is close to the bottom wall of the water tank, and light rays emitted by the light source penetrate through the first light-transmitting piece and are emitted into the water tank. Adopt the water tank subassembly that this application embodiment provided, can improve the convenience that the user observed the water level of water tank inside to can carry out the operation of timely moisturizing to the water tank.

Description

Water tank assembly and cooling fan

Technical Field

The application relates to the field of environmental electrical appliances, in particular to a water tank assembly and a cooling fan.

Background

In hot weather, people can use various electric appliances to cool down, and the cooling fan is one of the electric appliances. The cooling fan utilizes the characteristic that water evaporates to absorb heat, not only can play the effect of cooling, but also can play the effect of humidifying simultaneously, thus being favored by a plurality of users. The cooling fan generally sends water stored in the water tank to the water distributor through the water pump, and the water uniformly falls on the wet curtain from the water distributor. After the fan is started, external wind enters from the air inlet and flows through the wet curtain, and then is discharged from the air outlet, so that the cooling effect can be achieved. In order to ensure that the cooling fan can maintain normal operation, a user needs to observe the water level in the water tank, and when the water level is lower or no water exists in the water tank, water needs to be timely supplemented into the water tank so as to avoid the phenomenon that the cooling fan idles and cannot achieve the effect of cooling.

In the related art, the water tank in the cooling fan is usually positioned at the lower part of the cooling fan, so that a user cannot see the water level in the water tank when standing, and the user can only accurately observe the water level after squatting down and approaching the water gauge of the cooling fan or pulling away the water tank. However, the method for observing the water level in the water tank is complicated, and the situation that the water tank is not found in time and the water is not sufficiently filled in time is easy to occur.

Disclosure of Invention

In view of this, this application provides a water tank subassembly and thermantidote, can improve the convenience that the user observed the water level of water tank inside to can carry out the operation of timely moisturizing to the water tank.

In one aspect, embodiments of the present application provide a water tank assembly including a water tank, a water gauge, and a light emitting mechanism;

the water gauge is arranged on the first side wall of the water tank and is used for displaying the water level in the water tank;

the luminous mechanism comprises a first light-transmitting piece and a light source, the first light-transmitting piece is arranged on the bottom wall of the water tank, the light source is positioned outside the water tank and is close to the bottom wall of the water tank, and light rays emitted by the light source penetrate through the first light-transmitting piece and are emitted into the water tank.

Optionally, the water tank further comprises a second side wall, and the second side wall is opposite to the first side wall;

the distance between the first light-transmitting piece and the first side wall is a first distance;

the distance between the first light-transmitting piece and the second side wall is a second distance;

wherein the first distance is not greater than the second distance.

Optionally, the light emitting mechanism further includes a second light transmitting member, the second light transmitting member is located between the first light transmitting member and the light source, and light emitted by the light source sequentially penetrates through the second light transmitting member and the first light transmitting member, and then is injected into the water tank.

Optionally, the water tank assembly further comprises a base for carrying the water tank;

the top surface of base is equipped with first mounting hole, the second printing opacity spare is sealed to be set up in the first mounting hole.

Optionally, the second light-transmitting piece and the top surface of the base are formed through a double-shot molding process or a double-shot molding process.

Optionally, a central ray emitted by the light source is parallel to the extending direction of the water gauge, and a part of orthographic projection of the central ray on the first side wall falls into the range of the water gauge.

Optionally, a second mounting hole is formed in the first side wall of the water tank, and the water gauge is embedded into the second mounting hole.

Optionally, the water tank is located the casing, the water tank subassembly still includes water tank detection mechanism, electric connection between water tank detection mechanism and the controller, electric connection between the controller with the light source, wherein, water tank detection mechanism is used for detecting whether the water tank is located in the casing.

Optionally, an outer wall of the tank and an inner wall of the housing form an annular region;

the water tank detection mechanism is arranged in the annular empty area.

Optionally, the water tank detection mechanism comprises an infrared receiver and an infrared emitter, the infrared receiver is arranged opposite to the infrared emitter, and the infrared receiver is electrically connected with the controller;

the infrared receiver and the infrared emitter are both arranged in the annular area, and the infrared receiver and the infrared emitter are arranged opposite to each other.

In another aspect, an embodiment of the present application provides a cooling fan, including:

the shell comprises an air inlet and an air outlet, an air channel is formed in the shell, and the air channel is respectively communicated with the air inlet and the air outlet;

a water tank assembly as claimed in any one of the preceding claims, the water tank assembly being disposed within the housing;

a wet curtain assembly disposed within the housing above the water tank assembly, the wet curtain assembly including a wet curtain for receiving water pumped from a water tank of the water tank assembly;

the wind wheel assembly is used for driving the air to flow so that the air enters from the air inlet, flows through the wet curtain and then flows out from the air outlet.

The water tank subassembly that this application embodiment provided includes water tank, water gauge and luminous mechanism. The water gauge is installed at the first lateral wall of water tank for show the inside water level of water tank, thereby the user just can observe the residual water yield in the water tank through the water gauge. The light-emitting mechanism comprises a first light-transmitting piece and a light source, the first light-transmitting piece is arranged on the bottom wall of the water tank, the light source is positioned outside the water tank and is close to the bottom wall of the water tank, and light rays emitted by the light source penetrate through the first light-transmitting piece and are emitted into the water tank. Through the arrangement, the light source can shine from the bottom of the water tank towards the inside of the water tank to illuminate the inside of the water tank, so that a user can directly see the water level inside the clean water tank through the water gauge without squatting or pulling away the water tank. The water tank assembly that this application provided has improved the convenience that the user observed the water level of water tank inside to can carry out the operation of timely moisturizing to the water tank.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an exploded view of a water tank, a water gauge, and a portion of a housing in a water tank assembly provided in an embodiment of the present application;

FIG. 2 is an exploded view of a water tank, a water gauge, and a base in a water tank assembly according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a water tank, a water gauge and a first transparent member in a water tank according to an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of a cistern assembly provided in an embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of a tank assembly provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a cooling fan according to an embodiment of the present disclosure;

fig. 7 is an exploded view of a cooling fan according to an embodiment of the present application.

Reference numerals:

100. a water tank; 110. a first sidewall; 120. a bottom wall; 130. a second sidewall; 111. a second mounting hole; 121. a third mounting hole;

200. a water gauge;

300. a light emitting mechanism; 310. a first light-transmitting member; 320. a light source; 330. a second light-transmitting member;

400. a base; 410. a top surface; 411. a first mounting hole;

500. a housing; 510. a first housing; 520. a second housing; 511. a fourth mounting hole; 512. an air outlet; 521. an air inlet;

600. a water tank detection mechanism; 610. an infrared receiver; 620. an infrared emitter;

700. an annular region;

800. a wet curtain assembly; 810. a wet curtain;

900. a wind wheel assembly.

Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

Unless defined otherwise, all technical terms used in the examples of the present application have the same meaning as commonly understood by one of ordinary skill in the art.

In order to make the technical solution and advantages of the present application more apparent, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

As shown in connection with fig. 1 and 2, embodiments of the present application provide a water tank assembly that includes a water tank 100, a water gauge 200, and a light emitting mechanism 300. A water gauge 200 is installed at the first sidewall 110 of the water tank 100, and the water gauge 200 is used to display the water level inside the water tank 100. It should be noted that the water level in the embodiment of the present application refers to the height position of water in the water tank 100. Typically, the water gauge 200 is a transparent or translucent material, such as a transparent lens or a translucent lens. The user can observe the remaining amount of water in water tank 100 through water gauge 200. The light emitting mechanism 300 includes a first light transmitting member 310 and a light source 320, the first light transmitting member 310 is mounted on the bottom wall 120 of the water tank 100, the light source 320 is located outside the water tank 100 and is close to the bottom wall 120 of the water tank 100, and light emitted by the light source 320 is transmitted through the first light transmitting member 310 and enters the interior of the water tank 100. In general, the light source 320 may be an LED lamp, or may be other devices capable of emitting light, which is not specifically described herein. In some embodiments, all the light emitted by the light source 320 is transmitted through the first light-transmitting member 310 and enters the interior of the water tank 100, so that the utilization rate of the light source 320 can be improved and the water in the water tank 100 can be ensured to have high brightness.

By adopting the water tank assembly provided by the application, as the light source 320 in the light-emitting mechanism 300 can shine from the bottom of the water tank 100 towards the inside of the water tank 100, light is scattered in water to uniformly illuminate the inside of the water tank 100, so that a user can directly see the water level inside the clean water tank 100 through the water gauge 200 without squatting or pulling the water tank 100 apart. Thereby improving the convenience of the user to observe the water level inside the water tank 100 to perform the timely water replenishing operation of the water tank 100.

Details and functions of the water tank assembly according to the embodiments of the present application are described in more detail below with reference to fig. 1 to 6.

As shown in conjunction with fig. 1 and 2, in some embodiments, water tank 100 further includes a second sidewall 130, second sidewall 130 being disposed opposite first sidewall 110. The distance between the first transparent member 310 and the first sidewall 110 is a first distance, and the distance between the first transparent member 310 and the second sidewall 130 is a second distance, wherein the first distance is not greater than the second distance. It can be appreciated that by such arrangement, the light brightness of the water gauge 200 side can be ensured to be brighter, and a user can see a clearer water level in the water tank 100 through the water gauge 200, thereby facilitating the user to know the residual water amount in the water tank 100 more accurately and timely.

Referring to fig. 2 and fig. 4, in some embodiments, the light emitting mechanism 300 further includes a second light transmitting member 330, where the second light transmitting member 330 is located between the first light transmitting member 310 and the light source 320, and light emitted by the light source 320 sequentially passes through the second light transmitting member 330 and the first light transmitting member 310, and then enters the water tank 100. It should be noted that, the first light-transmitting member 310, the second light-transmitting member 330 and the light source 320 are sequentially disposed along the vertical direction, that is, the second light-transmitting member 330 is located under the first light-transmitting member 310, and the light source 320 is located under the second light-transmitting member 330, so that the light emitted by the light source 320 is vertically emitted into the water tank 100, and the light is scattered in the water to uniformly illuminate the water in the water tank 100. Since light does not radiate toward the water gauge 200, it is possible to avoid the light of the water gauge 200 from being too glare, which may cause uncomfortable feeling when the human eyes look at the water gauge 200. Meanwhile, since the second light-transmitting member 330 is positioned between the first light-transmitting member 310 and the second light-transmitting member 330, in case that there is water drop at the bottom of the water tank 100, water is not directly dropped onto the light source 320, but is dropped onto the second light-transmitting member 330, thereby preventing the light source 320 from contacting with water, resulting in a phenomenon that the light source 320 is damaged. That is, the second light-transmitting member 330 not only can transmit light, but also can prevent water. It should be noted that, in the embodiment of the present application, the first light-transmitting member 310 and the second light-transmitting member 330 may be made of transparent or semitransparent materials, such as a transparent lens or a semitransparent lens.

As shown in fig. 2, in some embodiments, the tank assembly further includes a base 400, the base 400 being configured to carry the tank 100. The top surface 410 of the base 400 is provided with a first mounting hole 411, and the second light transmissive member 330 is hermetically disposed in the first mounting hole 411. It can be appreciated that, since the second light transmitting member 330 is sealed with the first mounting hole 411, it is further ensured that water falling from the bottom of the water tank 100 does not fall onto the light source 320, and damage to the light source 320 is avoided.

In some embodiments, a sealing structure is disposed between the outer edge of the second light-transmitting member 330 and the wall of the first mounting hole 411. For example, a sealing ring is sleeved on the outer edge of the second light-transmitting member 330, so that a seal can be formed between the second light-transmitting member 330 and the first mounting hole 411, and water dropped from the water tank 100 is ensured not to fall onto the light source 320.

In some embodiments, the light source 320 is fixed with the base 400. For example, the light source 320 may be fixed with the base 400 by a fixing structure. Alternatively, the light source 320 may be fixed to the base 400 by an adhesive. The light source 320 may be located directly below the first light transmitting member 310, and the structure for mounting the light source 320 is not limited herein.

In some embodiments, the second light transmissive member 330 is molded or two-shot molded with the top surface 410 of the base 400. It should be noted that, by any of the above injection molding processes, the second light-transmitting member 330 and the first mounting hole 411 can be ensured to be in a sealed state, that is, water cannot flow out from the connection portion between the second light-transmitting member 330 and the first mounting hole 411. Meanwhile, the two injection molding processes can improve the preparation efficiency of the structure, facilitate assembly and improve the assembly efficiency.

In some embodiments, the central ray emitted by light source 320 is parallel to the extending direction of water gauge 200, and a portion of the orthographic projection of the central ray on first sidewall 110 falls within the scope of water gauge 200. It will be appreciated that by locating the light source 320 in the above-described position, the brightness at the water level 200 can be made higher, thereby ensuring that the user is able to see the water level through the water level 200.

As shown in fig. 1, in some embodiments, first sidewall 110 of water tank 100 is provided with a second mounting hole 111, and water gauge 200 is embedded within second mounting hole 111. In some embodiments, the water gauge 200 and the first sidewall 110 of the water tank 100 are formed by a two-shot injection molding process or a two-shot injection molding process, so that not only can the tightness between the water gauge 200 and the second mounting hole 111 be ensured, but also the preparation efficiency of the structure can be improved, the assembly is convenient, and the assembly efficiency is improved.

As shown in fig. 2, in some embodiments, the bottom wall 120 of the water tank 100 is provided with a third mounting hole 121, and the first light-transmitting member 310 is hermetically disposed in the third mounting hole 121. Thus, the sealability of the water tank 100 can be improved, and water in the water tank 100 is prevented from flowing out from the junction between the first light-transmitting member 310 and the third mounting hole 121, thereby causing a water leakage phenomenon. In some embodiments, the first light-transmitting member 310 and the bottom wall 120 of the water tank 100 are formed by a two-shot molding process or a two-shot molding process, so that not only can the tightness between the first light-transmitting member 310 and the third mounting hole 121 be ensured, but also the manufacturing efficiency of the structure can be improved, the assembly is convenient, and the assembly efficiency is improved.

As shown in fig. 5, in some embodiments, the water tank 100 is located in the housing 500, the water tank assembly further includes a water tank detection mechanism 600, and the water tank detection mechanism 600 is electrically connected to a controller (not shown in the figure) and the controller is electrically connected to the light source 320, where the water tank detection mechanism 600 is used to detect whether the water tank 100 is located in the housing 500. It should be noted that fig. 5 shows a first housing 510 in the housing 500.

The water tank detection mechanism 600 functions as follows:

when the water tank detection mechanism 600 detects that the water tank 100 is not within the housing 500, the water tank detection mechanism 600 generates a first signal and sends the first signal to the controller. The controller controls the light source 320 to be in an off state based on the first signal. So that the light source 320 does not emit light when the water tank 100 is taken out of the case 500. Avoiding the light from shining to human eyes under the condition of no water tank 100 in the shell 500, causing uncomfortable feeling to human eyes, and simultaneously, the light source 320 is turned off in time, thereby achieving the effect of energy saving.

When the water tank detection mechanism 600 detects that the water tank 100 is within the housing 500, the water tank detection mechanism 600 generates a second signal and sends the second signal to the controller. The controller controls the light source 320 to be in an on state based on the second signal. So set up, as long as water tank 100 is in casing 500, light source 320 just can send out light to illuminate water tank 100 inside, and then the user can in time see through water gauge 200 and know the water level height in the water tank 100, thereby can carry out the operation of timely moisturizing in the water tank 100.

As shown in fig. 5, in some embodiments, the outer wall of water tank 100 forms an annular region 700 with the inner wall of housing 500. The tank detection mechanism 600 is disposed within the annular region 700.

As shown in fig. 1, in some embodiments, a fourth mounting hole 511 is provided on the housing 500, the fourth mounting hole 511 matching the size of the water gauge 200. Thus, when the assembly between the housing 500 and the tank assembly is completed, the user can see the water gauge 200 through the fourth mounting hole 511, and thus observe the water level in the tank 100 through the water gauge 200 in time and clearly.

As shown in fig. 5, in some embodiments, the tank detection mechanism 600 includes an infrared receiver 610 and an infrared transmitter 620, where the infrared receiver 610 is disposed opposite the infrared transmitter 620, and the infrared receiver 610 is electrically connected to the controller. Wherein infrared receiver 610 and infrared transmitter 620 are both mounted within annular region 700, and infrared receiver 610 is disposed opposite infrared transmitter 620.

It should be noted that, the infrared receiver 610 is configured to receive infrared light emitted by the infrared emitter 620. When there is no object blocking between the infrared receiver 610 and the infrared emitter 620, the infrared receiver 610 can receive the infrared light emitted from the infrared emitter 620, and the infrared receiver 610 can generate the first signal. When there is an object blocking between the infrared receiver 610 and the infrared emitter 620, for example, when the water tank 100 is blocked, the infrared receiver 610 cannot receive the infrared light emitted from the infrared emitter 620, and the infrared receiver 610 generates the second signal.

When needed, the interaction process between the infrared receiver 610, the infrared transmitter 620, the controller and the light source 320 is as follows:

when the water tank 100 in the case 500 is taken out, the infrared receiver 610 generates a first signal based on receiving the infrared light emitted from the infrared emitter 620, and transmits the first signal to the controller. The controller controls the light source 320 to be in an off state based on the first signal.

When the water tank 100 is placed in the case 500, the infrared receiver 610 generates a second signal based on not receiving the infrared light emitted from the infrared emitter 620, and transmits the second signal to the controller. The controller controls the light source 320 to be in an on state based on the second signal.

It is understood that by providing the infrared receiver 610, the infrared transmitter 620, and the controller, the on-off state of the light source 320 can be controlled based on whether the water tank 100 is placed in the housing 500. Therefore, when the water tank 100 is taken out, the light is prevented from irradiating eyes, so that the eyes are uncomfortable, the power supply can be saved, and the energy-saving effect is achieved. It should be noted that, both the infrared receiver 610 and the infrared emitter 620 may be fixed to the outer wall of the water tank 100 or may be fixed to the inner wall of the housing 500. Also, the infrared receiver 610 and the infrared emitter 620 may be fixed on the outer wall of the water tank 100 or the inner wall of the case 500 by a clamping connection, a fixing member or an adhesive member, and the specific installation structure of the infrared receiver 610 and the infrared emitter 620 is not limited in this application.

In some embodiments, the height of infrared receiver 610 is the same as the height of infrared transmitter 620, so that it can be more accurately determined whether water tank 100 is located within housing 500.

In some embodiments, scale 200 is marked with graduations so that a user can more accurately know the amount of water in water tank 100 through water scale 200 to more accurately and timely perform a water replenishment operation on water tank 100.

By adopting the water tank assembly provided by the application, as the light source 320 in the light emitting mechanism 300 can shine from the bottom of the water tank 100 towards the inside of the water tank 100 to illuminate the inside of the water tank 100, a user can directly see the water level inside the clean water tank 100 through the water gauge 200 without squatting or pulling the water tank 100 open. Thereby improving the convenience of the user to observe the water level inside the water tank 100 to perform the timely water replenishing operation of the water tank 100. Meanwhile, the luminous mechanism 300 in the water tank assembly and surrounding structures are in a sealing state, so that the phenomenon of water leakage can be avoided, the phenomenon that water drops damage the light source 320 can be avoided, and the service life of the water tank assembly is prolonged.

As shown in fig. 7, an embodiment of the present application further provides a cooling fan, where the cooling fan includes:

the casing 500 includes an air inlet 521 and an air outlet 512, and an air duct is formed in the casing 500 and is respectively communicated with the air inlet 521 and the air outlet 512.

The water tank assembly of any one of the embodiments of the present application described above is disposed within the housing 500. It should be noted that the components and corresponding functions of the water tank assembly in the cooling fan are the same as those of the water tank assembly in the embodiment of the application.

A wet curtain assembly 800 is disposed within the housing 500 above the tank assembly, the wet curtain assembly 800 including a wet curtain 810 for receiving water pumped from the tank 100 of the tank assembly.

The wind wheel assembly 900 is used for driving the air to flow so that the air enters from the air inlet 521, flows through the wet curtain 810 and then flows out from the air outlet 512.

As shown in connection with fig. 1 and 2, in some embodiments, the tank assembly includes a tank 100, a water gauge 200, and a lighting mechanism 300. A water gauge 200 is installed at the first sidewall 110 of the water tank 100, and the water gauge 200 is used to display the water level inside the water tank 100. It should be noted that the water level in the embodiment of the present application refers to the height position of water in the water tank 100. Typically, the water gauge 200 is a transparent or translucent material, such as a transparent lens or a translucent lens. The user can observe the remaining amount of water in water tank 100 through water gauge 200. The light emitting mechanism 300 includes a first light transmitting member 310 and a light source 320, the first light transmitting member 310 is mounted on the bottom wall 120 of the water tank 100, the light source 320 is located outside the water tank 100 and is close to the bottom wall 120 of the water tank 100, and light emitted by the light source 320 is transmitted through the first light transmitting member 310 and enters the interior of the water tank 100.

As shown in fig. 6, in some embodiments, the cooling fan includes a housing 500, the housing 500 including a first housing 510 and a second housing 520. It will be appreciated that placement of water tank 100 within housing 500, housing 500 may provide protection for water tank 100. Generally, the outside air enters the cooling fan from the air inlet 521 near the second housing 520 side and flows out from the air outlet 512 near the first housing 510 side.

As shown in fig. 5, in some embodiments, the first housing 510 is provided with a fourth mounting hole 511, and the first mounting hole 411 is matched with the size of the water gauge 200, so that when the assembly between the housing 500 and the water tank assembly is completed, a user can see the water gauge 200 through the fourth mounting hole 511, and thus, the water level in the water tank 100 can be timely and clearly observed through the water gauge 200.

The cooling fan provided by the embodiment of the application is provided with the water tank assembly, and the light source 320 in the light emitting mechanism 300 can shine from the bottom of the water tank 100 to the inside of the water tank 100, so that the light is scattered in water to uniformly illuminate the inside of the water tank 100, and a user can directly see the water level inside the clean water tank 100 through the water gauge 200 without squatting or pulling the water tank 100. Thereby improving the convenience of the user to observe the water level inside the water tank 100 to perform the timely water replenishing operation of the water tank 100.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. The specification and examples are to be regarded in an illustrative manner only.

It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (11)

1. A water tank assembly, characterized in that the water tank assembly comprises a water tank (100), a water gauge (200) and a lighting mechanism (300);

the water gauge (200) is mounted on the first side wall (110) of the water tank (100), and the water gauge (200) is used for displaying the water level inside the water tank (100);

the light emitting mechanism (300) comprises a first light transmitting piece (310) and a light source (320), the first light transmitting piece (310) is mounted on the bottom wall (120) of the water tank (100), the light source (320) is located outside the water tank (100) and is close to the bottom wall (120) of the water tank (100), and light emitted by the light source (320) penetrates through the first light transmitting piece (310) to be emitted into the water tank (100).

2. The water tank assembly of claim 1, wherein the water tank (100) further comprises a second side wall (130), the second side wall (130) being disposed opposite the first side wall (110);

the distance between the first light-transmitting member (310) and the first side wall (110) is a first distance;

the distance between the first light-transmitting member (310) and the second side wall (130) is a second distance;

wherein the first distance is not greater than the second distance.

3. The water tank assembly of claim 1, wherein the light emitting mechanism (300) further comprises a second light transmitting member (330), the second light transmitting member (330) is located between the first light transmitting member (310) and the light source (320), and light emitted by the light source (320) sequentially passes through the second light transmitting member (330) and the first light transmitting member (310) and is further emitted into the water tank (100).

4. A cistern assembly according to claim 3, characterized in that it further comprises a base (400), said base (400) being adapted to carry said cistern (100);

the top surface (410) of the base (400) is provided with a first mounting hole (411), and the second light-transmitting piece (330) is arranged in the first mounting hole (411) in a sealing mode.

5. The water tank assembly of claim 4, wherein the second light transmissive member (330) is formed with the top surface (410) of the base (400) by a two-shot molding process or a two-shot molding process.

6. The water tank assembly of claim 1, wherein a central ray of light from the light source (320) is parallel to the direction of extension of the water gauge (200), a portion of the orthographic projection of the central ray of light on the first side wall falling within the range of the water gauge (200).

7. The water tank assembly according to claim 1, wherein the first side wall (110) of the water tank (100) is provided with a second mounting hole (111), the water gauge (200) being embedded in the second mounting hole (111).

8. The water tank assembly of claim 1, wherein the water tank (100) is located within a housing (500), the water tank assembly further comprising a water tank detection mechanism (600), the water tank detection mechanism (600) being electrically connected to a controller, the controller being electrically connected to the light source (320), wherein the water tank detection mechanism (600) is configured to detect whether the water tank (100) is located within the housing (500).

9. The water tank assembly of claim 8, wherein an outer wall of the water tank (100) and an inner wall of the housing (500) form an annular region (700);

the tank detection mechanism (600) is disposed within the annular region (700).

10. The water tank assembly of claim 9, wherein the water tank detection mechanism (600) includes an infrared receiver (610) and an infrared emitter (620), the infrared receiver (610) being disposed opposite the infrared emitter (620), the infrared receiver (610) being electrically connected to the controller;

wherein the infrared receiver (610) and the infrared emitter (620) are both mounted within the annular region (700), and the infrared receiver (610) is disposed opposite the infrared emitter (620).

11. A cooling fan, the cooling fan comprising:

the shell (500) comprises an air inlet (521) and an air outlet (512), wherein an air channel is formed in the shell (500), and the air channel is respectively communicated with the air inlet (521) and the air outlet (512);

the water tank assembly of any one of claims 1 to 10, disposed within the housing (500);

a wet curtain assembly (800) disposed within the housing (500) above the tank assembly, the wet curtain assembly (800) including a wet curtain (810), the wet curtain (810) for receiving water pumped from a tank (100) of the tank assembly;

the wind wheel assembly (900) is used for driving the air to flow so that the air enters from the air inlet (521), flows through the wet curtain (810) and then flows out from the air outlet (512).

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