A fan with lighting function

Abstract

The application relates to a fan with a lighting function, which comprises a fan handle, a mounting through slot arranged on one end of the fan handle, a fan shaft made of acrylic material, two ends of the fan shaft being fixedly connected with two side walls opposite to the mounting through slot, a plurality of light guide plates made of acrylic material, the plurality of light guide plates being sleeved on the fan shaft, the plurality of light guide plates being uniformly distributed in a predetermined central angle range with the fan shaft as the center, the plurality of light guide plates forming fan leaves when the plurality of light guide plates completely coincide on a projection plane perpendicular to the fan shaft, and a light emitting piece arranged on the inner wall of the mounting through slot, the light emitting piece being used for emitting parallel light beams parallel to the length direction of the light guide column. The application has the effect of improving the lighting performance of the fan.

Description

Technical Field

[0001] This application relates to the field of multifunctional fans, and more particularly to a fan with a lighting function. Background Technology

[0002] Fans are used to generate airflow and are essential items in summer. Common fans are divided into round fans, folding fans, and paddle fans. In order to increase their practicality, round fans are often equipped with lighting functions.

[0003] In related technologies, a fan with lighting function includes a round fan body and a light-emitting component. The round fan body includes fan blades and a fan handle. The fan blades are fixedly connected to one end of the fan handle. The light-emitting component is usually a combination of LED beads and other necessary components such as convex lenses, so that the light-emitting component can emit a parallel light beam. The light-emitting component is installed on the end of the fan handle near the fan blades, thereby enabling the fan to have a lighting function.

[0004] Regarding the aforementioned technologies, there is a defect that the parallel beam emitted by the light-emitting element propagates directly in the air, so the parallel beam spreads outward in a circular direction with the emission direction as the axis, which weakens the illumination distance of the parallel beam and results in poor lighting performance of the fan. Summary of the Invention

[0005] In order to improve the lighting performance of a fan, this application provides a fan with a lighting function.

[0006] The fan with lighting function provided in this application adopts the following technical solution:

[0007] A fan with lighting function includes:

[0008] A fan handle, one end of which is provided with a mounting groove;

[0009] The fan shaft is made of acrylic material, and its two ends are fixedly connected to the two side walls opposite to the mounting slot, respectively.

[0010] The light guide plate is made of acrylic material and multiple light guide plates are provided. The multiple light guide plates are sleeved on the fan shaft. When the multiple light guide plates are evenly distributed within a predetermined central angle range with the fan shaft as the center, the multiple light guide plates form fan blades. When the multiple light guide plates completely overlap on the projection plane perpendicular to the fan shaft, the multiple light guide plates form light guide columns.

[0011] A light-emitting element is disposed on the inner wall of the mounting groove, and the light-emitting element is used to emit a parallel light beam that is parallel to the length direction of the light guide post.

[0012] By adopting the above technical solution, when the basic function of the fan is needed, the light guide plate can be rotated. When multiple light guide plates are evenly distributed around the fan shaft and within a predetermined central angle range, they will form the shape of fan blades. At this time, people can hold the fan handle and shake the fan blades to achieve the purpose of guiding the wind. When lighting is needed, the light guide plate can be rotated. When multiple light guide plates completely overlap to form a light guide column, the length direction of the light guide column is parallel to the parallel light beam emitted by the light source. The light emitted by the light source will then be emitted along the length direction of the light guide column. Since the light guide column is made of acrylic material, the degree to which the parallel light beam spreads outward along the circumference with its own emission direction as the axis during the propagation of the parallel light beam within the light guide column will be weakened. This allows the parallel light beam to illuminate a farther position after leaving the light guide column, thereby helping to improve the lighting performance of the fan.

[0013] Preferably, the light-emitting element is disposed on the bottom of the mounting slot, and the parallel light beam emitted by the light-emitting element is parallel to the length direction of the fan handle and can pass through the fan shaft; a light-blocking tube is disposed at the bottom of the mounting slot, one end of the light-blocking tube is connected to the bottom of the mounting slot, and the other end abuts against the light guide plate, and the light-emitting element is located in the inner circle of the light-blocking tube.

[0014] By adopting the above technical solution, on the one hand, the placement of the light-emitting element allows people to better align the length of the light guide column with the parallel beam emitted by the light-emitting element when lighting is needed, and also allows the parallel beam to enter the light guide column from its axial position. Therefore, during the movement of the parallel beam within the light guide column, the light loss at different positions in the circumferential direction will not have a significant deviation, thus preventing obvious changes in brightness within the area illuminated by the fan. On the other hand, the setting of the light-blocking tube reduces the amount of light loss in the parallel beam emitted by the light-emitting element before it enters the light guide column, allowing the parallel beam emitted by the light-emitting element to more fully enter the axial position of the light guide column, which helps to improve the utilization rate of light.

[0015] Preferably, one end of the light guide plate is sleeved on the fan shaft, and the surface of the light guide plate that abuts against the light blocking tube is provided with an arc transition. The surface of the light guide plate that abuts against the light blocking tube is set as the light incident surface. A first reflective film is attached to the light incident surface. The first reflective film is provided with a first light incident interruption and a second light incident interruption. When multiple light guide plates form the light guide column, the first light incident interruption is connected to the inner ring of the light blocking tube. When multiple light guide plates form the fan blade, the second light incident interruption is connected to the inner ring of the light blocking tube.

[0016] By adopting the above technical solution, firstly, the arrangement of one end of the light guide plate being sleeved on the fan shaft and the light guide plate and the light blocking tube having an arc transition surface allows the parallel light beam emitted by the light-emitting element to still enter the light guide column from the end face of the light guide column near the light blocking tube within a predetermined angle range of the light guide plate's rotation. This serves as the premise for ensuring that light still enters the light guide plate even when multiple light guide plates are formed in the fan blade state. Secondly, the first reflective film, and the way it is provided with a first light-incident interruption part and a second light-incident interruption part, prevents the parallel light beam from entering all the light guide plates even when multiple light guide plates are not forming a light guide column or fan blade state. This makes it easier for people to distinguish between the two usage states of the fan. In addition, when the first light-incident interruption part is connected to the inner ring of the light blocking tube, the light emitted by the light-emitting element enters the light guide column to achieve the function of long-distance illumination. When the second light-incident interruption part is connected to the inner ring of the light blocking tube, the light emitted by the light-emitting element can enter the light guide plate, so that multiple light guide plates emit light, thereby enabling the fan to emit light even when it is open.

[0017] Preferably, a filter film and a scattering film are attached to the second light incident interruption portion, and the filter film is attached to the outside of the scattering film; multiple filter films are provided, and multiple filter films are correspondingly provided with multiple light guide plates, and the multiple filter films have different filtering properties.

[0018] By adopting the above technical solution, on the one hand, the setting of the scattering film will cause the parallel beam to slightly diffuse outward along the circumferential direction after passing through the scattering film, thus improving the uniformity of light emission at the end of the light guide plate near the light blocking tube. In addition, the scattering film is located inside the filter film, which greatly reduces the amount of light flowing into the air after the parallel beam passes through the scattering film, helping to maintain the utilization rate of light. On the other hand, the setting of multiple filter films with different filtering performances can make the color of the light entering each light guide plate different after the parallel beam passes through the second light incident discontinuity on different light guide plates. This greatly improves the aesthetics of the fan when multiple light guide plates form a fan blade state.

[0019] Preferably, a second reflective film is provided on the outer wall of the light guide plate. The second reflective film is parallel to the axis of the fan shaft. When multiple light guide plates form the fan blade, the parallel light beam emitted by the light-emitting element passes sequentially through the second incident light interruption, the fan shaft, and the second reflective film.

[0020] By adopting the above technical solution, due to the setting of the second reflective film, when multiple light guide plates form a fan blade state, the parallel beam enters the light guide plate from the second light-incident interruption and passes through the fan shaft. The parallel beam will then contact the second reflective film. Then, due to the reflection effect, the parallel beam will move towards the center line along the length direction of the light guide plate. Therefore, after passing through the fan shaft, the parallel beam will not leave the light guide plate directly from the side of the light guide plate near the fan shaft and away from the second light-incident interruption, thereby improving the light emission uniformity of the light guide plate near the fan shaft and away from the fan shaft.

[0021] Preferably, a light-guiding notch is provided at one end of the light guide plate near the light-blocking tube, and the light-guiding notch and the second light-incident interruption are symmetrically arranged with respect to the center line of the light guide plate in the length direction; an auxiliary light-guiding part is provided on the outer wall of the end of the light guide plate away from the fan shaft, and the auxiliary light-guiding part and the second reflective film are respectively located on two opposite side walls of the light guide plate. After the light passes through the auxiliary light-guiding part, the light will move towards the center line of the light guide plate in the length direction.

[0022] By adopting the above technical solution, on the one hand, since light has a stronger propagation ability in the light guide plate than in air, the setting of the light-guiding notch makes the center line of the light guide plate along the length direction of the light guide plate at the end near the fan axis asymmetrical. Therefore, after the parallel beam enters the light guide plate at the end near the fan axis, the parallel beam can better propagate to the end of the light guide plate away from the light blocker, which helps to improve the overall uniformity of light emission of the light guide plate. On the other hand, since there will be an angle between the direction of movement of the parallel beam and the length direction of the light guide plate after the parallel beam passes through the second reflective film, the setting of the auxiliary light-guiding part can change the direction of movement of the parallel beam again after passing through the second reflective film. This greatly reduces the light loss caused by the parallel beam passing through the light guide plate during the process of the parallel beam moving to the end of the light guide plate away from the fan axis, thereby significantly improving the uniformity of light emission of the light guide plate.

[0023] Preferably, a light guide film is provided at one end of the light guide plate away from the fan shaft, and the two ends of the light guide film are respectively connected to the side of two adjacent light guide plates that are close to each other; each side surface of the two adjacent light guide plates is provided with a receiving notch for embedding the light guide film, and when multiple light guide plates form the light guide column, the receiving notch on the two adjacent light guide plates forms a receiving through groove.

[0024] By adopting the above technical solution, since there is a gap between the ends of two adjacent light guide plates away from the fan shaft when multiple light guide plates form a fan blade state, the setting of the light guide film allows the parallel light beam to be transmitted to the light guide film. This allows multiple light guide films to connect the light emission of multiple light guide plates in series, which helps to improve the aesthetics of the fan when it is unfolded. On the other hand, the setting of the receiving notch allows the light guide film to be in the receiving slot when multiple light guide plates form a light guide column. Therefore, the setting of the light guide film will not cause a large gap at the end of multiple light guide plates away from the fan shaft, thus not weakening the propagation ability of the parallel light beam in the light guide column, and thus not affecting the lighting performance of the fan.

[0025] Preferably, when the light guide plate forms the light guide column and the outer walls of two adjacent light guide plates near the light guide film abut against each other, the light guide film will undergo extrusion deformation; a locking block and a locking slot are respectively provided on the side surfaces of the two adjacent light guide plates that are close to each other, and the locking block and the locking slot are both located on the end of the light guide plate near the light guide film; the locking block is made of elastic light-transmitting material, and when the locking block is embedded in the locking slot, the outer walls of the two adjacent light guide plates near the light guide film abut against each other, and the locking block undergoes extrusion deformation.

[0026] By adopting the above technical solution, on the one hand, by setting the volume of the light guide film without deformation to be greater than the volume of the accommodating slot, the light guide film will undergo extrusion deformation when the outer walls of the ends of two adjacent light guide plates away from the fan shaft abut against each other. Thus, when multiple light guide plates form a light guide column, the tightness of the abutment between the outer walls of the light guide plates away from the fan shaft and the light guide film is improved, thereby helping to maintain the overall density uniformity inside the light guide column. On the other hand, the setting of the locking block and the locking slot allows the locking block made of elastic material to be expanded and embedded into the locking slot after multiple light guide plates form a light guide column. Therefore, the expansion deformation of the light guide film can be offset by the cooperation between the locking block and the locking slot, so that the outer walls of the ends of two adjacent light guide plates away from the fan shaft can maintain a certain stability in abutting against each other, thereby achieving the purpose of keeping the light guide film in a state of extrusion deformation.

[0027] Preferably, a light-absorbing film is attached to the outer side of the first reflective film, the light-absorbing film being able to communicate with the inner ring of the light-blocking tube, and the light-absorbing film having a heat dissipation portion extending to the outside of the mounting slot.

[0028] By adopting the above technical solution, on the one hand, due to the setting of the light-absorbing film, the parallel light beam emitted by the light-emitting element will not be reflected back to the light-emitting element by the first reflective film, so the light-emitting element will not overheat due to light irradiation. On the other hand, the light-absorbing film will also accumulate a certain amount of heat when absorbing light. Therefore, the setting of the heat dissipation part allows the light-absorbing film to effectively dissipate the heat it accumulates to the external environment, so that the fan will not overheat in the area near the light-emitting element, and thus will not damage the necessary control components connected to the light-emitting element.

[0029] Preferably, a connecting key is provided on the outer peripheral wall of the fan shaft, and the length direction of the connecting key is parallel to the axial direction of the fan shaft; the plurality of light guide plates are divided into a fixed light guide part and a plurality of rotating light guide parts, the fixed light guide part is fixedly sleeved on the fan shaft, and the length direction of the fixed light guide part is parallel to the fan handle; the connection between the rotating light guide part and the fan shaft is provided as a rotating hole, and the inner wall of the rotating hole is provided with a rotating through groove for the connecting key to be inserted, the rotating through groove extends around the axial direction of the fan shaft, and the rotating through groove has a receiving end and an unfolding end along its own extending direction. When the connecting key moves to the receiving end, the plurality of light guide plates form the light guide column, and when the connecting key moves to the unfolding end, the plurality of light guide plates form the fan blade; a damping pad under compression deformation is provided between the outer wall of the fan shaft and the inner wall of the rotating hole.

[0030] By adopting the above technical solution, on the one hand, the setting of the rotating through slot allows the fan to be unfolded simply by rotating the light guide plate until the connecting key moves to the unfolded end, and to be folded up simply by rotating the light guide plate until the connecting key moves to the folded end. This makes it easier for people to judge the required position of each light guide plate when multiple light guide plates form fan blades or light guide columns, thus making it easier for people to use the fan. On the other hand, the setting of the damping pad makes the rotating light guide part and the fan shaft damped, so that the rotating light guide part is less likely to rotate due to accidental contact, thus more stably maintaining the state of the fan blades or light guide columns formed by multiple light guide plates.

[0031] In summary, this application includes at least one of the following beneficial technical effects:

[0032] 1. By setting up the fan handle, fan shaft, light guide plate, and light-emitting component, when illumination is needed, the light guide plate can be rotated. When multiple light guide plates completely overlap to form a light guide column, the length direction of the light guide column is parallel to the parallel light beam emitted by the light-emitting component. The light emitted by the light-emitting component will then be emitted along the length direction of the light guide column. Since the light guide column is made of acrylic material, the degree to which the parallel light beam spreads outward in a circular direction with its own emission direction as the axis is weakened during the propagation of the parallel light beam within the light guide column. This allows the parallel light beam to illuminate a farther position after leaving the light guide column, thereby helping to improve the lighting performance of the fan.

[0033] 2. By setting up the light blocker, the amount of light loss of the parallel beam emitted by the light source is reduced during the process before entering the light guide column, so that the parallel beam emitted by the light source can enter the axis position of the light guide column more fully, which helps to improve the utilization rate of light.

[0034] 3. By using a first reflective film and a first light-incident interruption section and a second light-incident interruption section on the first reflective film, parallel light beams can be prevented from entering the light guide plates when multiple light guide plates are not in the light guide column or fan blade state, thus making it easier for people to distinguish the two usage states of the fan. When the first light-incident interruption section is connected to the inner ring of the light-blocking tube, the light emitted by the light-emitting element enters the light guide column to achieve the function of long-distance illumination. When the second light-incident interruption section is connected to the inner ring of the light-blocking tube, the light emitted by the light-emitting element can enter the light guide plate, so that multiple light guide plates emit light, thereby enriching the functions of the fan. Attached Figure Description

[0035] Figure 1 This is a schematic diagram illustrating two usage states of the fan in the embodiments of this application.

[0036] Figure 2 This is a schematic diagram illustrating the specific structure of the light incident surface in the rotating light guide in this embodiment of the application.

[0037] Figure 3 This is a schematic diagram in the embodiments of this application to illustrate how two adjacent light guide plates cancel out the expansion deformation of the light guide film.

[0038] Explanation of reference numerals in the attached drawings: 1. Fan handle; 11. Mounting slot; 12. Light blocking tube; 2. Fan shaft; 21. Connecting key; 3. Light guide plate; 31. Light incident surface; 32. First reflective film; 321. First light incident interruption; 322. Second light incident interruption; 323. Light absorbing film; 3231. Heat dissipation part; 33. Filter film; 34. Scattering film; 35. Second reflective film; 36. Light guiding notch; 37. Auxiliary light guiding part; 38. Light guide film; 39. Accommodation notch; 391. Accommodation slot; 4. Fan blade; 41. Light guide column; 5. Light emitting element; 6. Locking block; 61. Locking slot; 7. Fixed light guide part; 8. Rotating light guide part; 81. Rotating hole; 82. Rotating slot; 821. Retracting end; 822. Unfolding end; 9. Damping pad. Detailed Implementation

[0039] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0040] This application discloses a fan with a lighting function. (See also...) Figure 1 and Figure 2 The fan with lighting function includes a fan handle 1, a fan shaft 2, a light guide plate 3, and a light-emitting element 5. The fan handle 1 can be cylindrical or cuboid in shape. The fan handle 1 is for people to hold, and a mounting groove 11 is opened on the end face of one end of the fan handle 1. The fan shaft 2 is made of acrylic and is cylindrical in shape. The two ends of the fan shaft 2 are fixedly connected to the two opposite side walls of the mounting groove 11. The light guide plate 3 is made of acrylic and multiple light guide plates 3 are provided. One end of the light guide plate 3 is sleeved on the fan shaft 2. When multiple light guide plates 3 are evenly distributed within a 120° central angle range with the fan shaft 2 as the center, multiple light guide plates 3 will form fan blades 4. When multiple light guide plates 3 completely overlap on the projection plane perpendicular to the fan shaft 2, multiple light guide plates 3 will form a light guide column 41. At the same time, the length direction of the light guide column 41 is parallel to the length direction of the fan handle 1.

[0041] Reference Figure 1 and Figure 2 The light-emitting element 5 is set on the bottom of the mounting slot 11. The light-emitting element 5 is a combination of lamp beads and other necessary components such as convex lenses. Therefore, the light-emitting element 5 can emit a parallel light beam. The setting position of the light-emitting element 5 allows the parallel light beam emitted by the light-emitting element 5 to be parallel to the length direction of the light guide column 41. The parallel light beam emitted by the light-emitting element 5 can pass through the fan shaft 2. When the fan is to be illuminated, multiple light guide plates 3 can form a light guide column 41. Then the parallel light beam emitted by the light-emitting element 5 can pass through the light guide column 41. During the propagation inside the light guide column 41, the degree of diffusion of the parallel light beam outward along the circumference with the emission direction as the axis is weakened. Therefore, after the parallel light beam leaves the light guide column 41, it can illuminate a farther position, thereby improving the lighting performance of the fan.

[0042] In addition, in this embodiment, the inside of the fan handle 1 also has a cavity adjacent to the mounting slot 11, and a circuit board and a control element for controlling the light-emitting element 5 are installed in the cavity. At the same time, an external button connected to the control element can be installed at the fan handle 1, so that people can more conveniently control the light-emitting element 5 to turn on and off through the external button.

[0043] Reference Figure 1 and Figure 2 In this embodiment, the multiple light guide plates 3 are divided into a fixed light guide part 7 and multiple rotating light guide parts 8. The fixed light guide part 7 is fixedly sleeved on the fan shaft 2, and the length direction of the fixed light guide part 7 is the same as the length direction of the fan handle 1. The rotating light guide parts 8 are rotatably sleeved on the fan shaft 2. Since each rotating light guide part 8 rotates at a different angle when switching between the fan blade 4 and the light guide post 41, the connection between the rotating light guide part 8 and the fan shaft 2 is specially treated. Specifically, a connecting key 2 is fixedly connected to the outer wall of the fan shaft 2. 1. The length direction of the connecting key 21 is parallel to the axis of the fan shaft 2; the connection between the rotating light guide part 8 and the fan shaft 2 is provided as a rotating hole 81, wherein the inner wall of the rotating hole 81 is provided with a rotating through groove 82 for the connecting key 21 to be inserted. The length direction of the rotating through groove 82 is parallel to the axis of the fan shaft 2, and the rotating through groove 82 also extends around the axis of the fan shaft 2, so that the rotating through groove 82 has an arc-shaped extension shape in the cross section perpendicular to the axis of the fan shaft 2. In addition, since the rotation angle of each rotating light guide part 8 is different, the range occupied by the rotating through groove 82 in the circumferential direction is different.

[0044] Reference Figure 1 and Figure 2 In this embodiment, the rotating through slot 82 has a receiving end 821 and an unfolding end 822 along its own extending direction. When the rotating light guide part 8 rotates and the connecting key 21 moves to the receiving end 821, the rotating light guide part 8 and the fixed light guide part 7 form a light guide column 41. When the rotating light guide part 8 rotates and the connecting key 21 moves to the unfolding end 822, the rotating light guide part 8 and the fixed light guide part 7 form a fan blade 4. Therefore, it is easier for people to judge the required position of each light guide plate 3 when multiple light guide plates 3 form a fan blade 4 or a light guide column 41, which makes it easier for people to use the fan. In addition, in order to maintain the stability of multiple light guide plates 3 forming a fan blade 4 or a light guide column 41, a damping pad 9 that can undergo compression deformation is fixedly connected to the outer wall of the fan shaft 2, and the damping pad 9 abuts against the inner wall of the rotating hole 81. Therefore, the rotating light guide part 8 rotates with damping, so that the rotating light guide part 8 is less likely to rotate due to accidental contact.

[0045] Reference Figure 1 and Figure 2In this embodiment, a light-blocking tube 12 made of reflective material is fixed at the bottom of the mounting slot 11. The light-blocking tube 12 is square tube shaped. One end of the light-blocking tube 12 is fixedly connected to the bottom of the mounting slot 11, and the other end abuts against the end face of the light guide plate 3 near the end of the mounting slot 11. Therefore, the amount of light loss of the parallel light beam emitted by the light-emitting element 5 will be reduced before entering the light guide post 41, so that the parallel light beam emitted by the light-emitting element 5 can penetrate more fully into the axial position of the light guide post 41, which helps to improve the light utilization rate of the light-emitting element 5. In addition, since the rotating light guide part 8 needs to rotate, and the light-blocking tube 12 will abut against the light guide plate 3, the surface of each light guide plate 3 that abuts against the light-blocking tube 12 is set with an arc transition, so that the light-blocking tube 12 will not interfere with the rotational movement of the rotating light guide part 8.

[0046] Reference Figure 1 and Figure 2 In this embodiment, in order to emit light even when the fan is open, the parallel light beam emitted by the light-emitting element 5 also needs to pass through the light guide plate 3 when multiple light guide plates 3 form the fan blade 4. At the same time, in order to distinguish between the two usage states of the fan, the surface of the light guide plate 3 that abuts against the light blocking tube 12 is specially treated. For ease of subsequent description, this surface is designated as the light-incident surface 31. Specifically, the light-incident surface 31 is fitted with a first reflective film 32 with double-sided reflection function, and the first reflective film 32 is formed with a first light-incident interruption part 321 and a second light-incident interruption part 322 in an intermittent manner. Since the fixed light guide part 7 does not rotate, the fixed light guide part 7 only needs to have the first light-incident interruption part 321. However, since the rotating light guide part 8 will rotate, the rotating light guide part 8 needs to have both the first light-incident interruption part 321 and the second light-incident interruption part 322.

[0047] Reference Figure 1 and Figure 2 In this embodiment, when multiple light guide plates 3 form a light guide column 41, the first light-incident interruption part 321 on the fixed light guide part 7 and the rotating light guide part 8 is connected to the inner ring of the light blocking tube 12, so that the parallel light beam emitted by the light-emitting element 5 enters the light guide column 41, thereby realizing the long-distance lighting function of the fan; when multiple light guide plates 3 form a fan blade 4, the first light-incident interruption part 321 on the fixed light guide part 7 is connected to the inner ring of the light blocking tube 12, and the second light-incident interruption part 322 on the rotating light guide part 8 is connected to the inner ring of the light blocking tube 12, so that the parallel light beam emitted by the light-emitting element 5 can enter the light guide plate 3, thereby making multiple light guide plates 3 emit light, and thus enabling the fan to emit light when it is open.

[0048] Reference Figure 1 and Figure 2When multiple light guide plates 3 form a fan blade 4, there is an angle between the length direction of the rotating light guide part 8 and the parallel light beam emitted by the light-emitting element 5. However, in order to improve the uniformity of light emission from the rotating light guide part 8, the rotating light guide part 8 is specially treated in this embodiment. Specifically, firstly, a second reflective film 35 is attached to the outer wall of the rotating light guide part 8. The plane where the second reflective film 35 is located is parallel to the axis of the fan shaft 2. The parallel light beam emitted by the light-emitting element 5 will pass through the second light incident interruption part 322, the fan shaft 2 and the second reflective film 35 in sequence. After passing through the second reflective film 35, the light will move towards the center line in the length direction of the rotating light guide part 8, so that the parallel light beam will not leave the light guide plate 3 directly from the end of the rotating light guide part 8 near the fan shaft 2.

[0049] Reference Figure 1 and Figure 2 Secondly, an auxiliary light-guiding part 37 is provided on the outer wall of the rotating light guide part 8 away from the fan shaft 2. The auxiliary light-guiding part 37 is formed by making grooves on the outer wall of the rotating light guide part 8. The auxiliary light-guiding part 37 and the second reflective film 35 are located on two opposite outer walls of the rotating light guide part 8. After the light passes through the second reflection, the light will have an angle with the center line of the length direction of the rotating light guide part 8. Therefore, the light can be guided again by the auxiliary light-guiding part 37, so that the light will move closer to the center line of the length direction of the rotating light guide part 8. Therefore, the parallel light beam emitted by the light-emitting element 5 can be better transmitted to the end of the rotating light guide part 8 away from the fan shaft 2, so that the rotating light guide part 8 can emit light more evenly, which helps to improve the aesthetics of the entire fan.

[0050] Reference Figure 1 and Figure 2 Thirdly, a light-guiding notch 36 is provided at one end of the rotating light guide section 8 near the light-blocking tube 12, and the light-guiding notch 36 and the second light-incident interruption section 322 are symmetrically arranged with respect to the center line of the rotating light guide section 8 in the length direction. This makes the rotating light guide section 8 near the fan shaft 2 have an asymmetrical shape along the center line of the length direction of the rotating light guide section 8. Therefore, after the parallel light beam enters the rotating light guide section 8 from the second light-incident interruption section 322, the parallel light beam can move better towards the end of the rotating light guide plate 3 away from the light-blocking tube 12, thereby further improving the uniformity of light emission of the rotating light guide section 8.

[0051] Reference Figure 1 and Figure 2In this embodiment, a filter film 33 and a scattering film 34 are attached to the second light-incident interruption 322. The filter film 33 is attached to the outside of the scattering film 34. Each rotating light guide 8 is provided with a filter film 33, and the multiple filter films 33 have different filtering properties. Therefore, after the parallel light beam passes through the second light-incident interruption 322 on different rotating light guides 8, the color of the light entering each rotating light guide 8 is different. Thus, when multiple light guide plates 3 form fan blades 4, the colors of each light guide plate 3 of the fan are different, thereby realizing the multi-functional use of the fan.

[0052] Reference Figure 1 and Figure 2 In this embodiment, when multiple light guide plates 3 form a fan blade 4, there is a gap between the ends of two adjacent light guide plates 3 that are away from the fan shaft 2. In order to improve the continuity of the overall illumination of the fan blade 4 when multiple light guide plates 3 emit light, a light guide film 38 made of a light-transmitting material is fixedly connected to the end of the light guide plate 3 that is away from the fan shaft 2. Specifically, the two ends of the light guide film 38 are fixedly connected to the edges of the two adjacent light guide plates 3 that are close to each other. Then the light in the light guide plate 3 will also be transmitted to the light guide film 38, so as to achieve the purpose of making the fan blade 4 continuously illuminate along the fan-shaped direction.

[0053] Reference Figure 1 and Figure 3 In order to prevent large gaps from appearing between the ends of the multiple light guide plates 3 away from the fan shaft 2 when multiple light guide plates 3 form light guide pillars 41, receiving notches 39 for embedding light guide film 38 are opened on the side surfaces of two adjacent light guide plates 3 that are close to each other. When multiple light guide plates 3 form light guide pillars 41, the receiving notches 39 on two adjacent light guide plates 3 will jointly form a receiving groove 391. Specifically, the volume of the receiving groove 391 is slightly smaller than the volume of light guide film 38 when it is not compressed and deformed. After multiple light guide plates 3 are overlapped, the side surfaces of multiple light guide plates 3 that are close to each other can be completely abutted, which will cause the light guide film 38 to be compressed and deformed, thereby enhancing the tightness of the abutment between the light guide plates 3 and the light guide film 38, and thus helping to maintain the density uniformity inside the light guide pillar 41.

[0054] Reference Figure 1 and Figure 3To counteract the expansion deformation of the light guide film 38, a locking block 6 and a locking groove 61 are respectively provided on the side surfaces of two adjacent light guide plates 3 that are close to each other. The locking block 6 is fixedly connected to one light guide plate 3 and is made of elastic light-transmitting material. The locking groove 61 is opened on the other light guide plate 3. After multiple light guide plates 3 are overlapped, the light guide plates 3 can be pressed until the locking block 6 expands and is embedded in the locking groove 61. This allows the outer walls of the two adjacent light guide plates 3 away from the fan shaft 2 to be stably kept in contact with each other, so that the light guide film 38 can be kept in a state of compression deformation, and thus the lighting performance of the fan will not be greatly reduced due to the setting of the light guide film 38.

[0055] Reference Figure 1 and Figure 2 In this embodiment, a light-absorbing film 323 is also attached to the outer side of the first reflective film 32. The light-absorbing film 323 can be connected to the inner ring of the light-blocking tube 12. The light-absorbing film 323 also has a heat dissipation part 3231 extending to the outside of the mounting slot 11. When people use the fan and mistakenly prevent the multiple light guide plates 3 from forming fan blades 4 or light guide columns 41, while the light-emitting element 5 is still emitting light, the light emitted by the light-emitting element 5 will be absorbed by the light-absorbing film 323. Therefore, the light will not be reflected back to the location of the light-emitting element 5 by the first reflective film 32, so that the light-emitting element 5 will not overheat. In addition, the heat dissipation part 3231 can also diffuse the heat accumulated by the light-absorbing film 323 to the external environment, so that the fan will not overheat when it is close to the light-emitting element 5, and thus will not damage the necessary control components connected to the light-emitting element 5.

[0056] The implementation principle of a fan with lighting function according to an embodiment of this application is as follows: When the fan needs to provide lighting, the light guide part 8 can be rotated. When multiple light guide plates 3 are completely overlapped to form a light guide column 41, the light emitted by the light-emitting element 5 will be emitted along the length direction of the light guide column 41. Since the light guide column 41 is made of acrylic material, the degree to which the parallel light beam spreads outward along the circumference with its own emission direction as the axis during the propagation of the parallel light beam in the light guide column 41 will be weakened. This allows the parallel light beam to illuminate a farther position after leaving the light guide column 41, thereby helping to improve the lighting performance of the fan.

[0057] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fan with a lighting function, characterized in that, include: A fan handle (1) is provided with a mounting slot (11) at one end; a fan shaft (2) is made of acrylic material, and the two ends of the fan shaft (2) are fixedly connected to the two side walls opposite to the mounting slot (11); a light guide plate (3) is made of acrylic material, and multiple light guide plates (3) are provided. Multiple light guide plates (3) are sleeved on the fan shaft (2). When multiple light guide plates (3) are evenly distributed within a predetermined central angle range with the fan shaft (2) as the center, multiple light guide plates (3) form fan blades (4); when multiple light guide plates (3) completely overlap on the projection plane perpendicular to the fan shaft (2), multiple light guide plates (3) form light guide columns (41). A light-emitting element (5) is disposed on the inner wall of the mounting groove (11). The light-emitting element (5) is used to emit a parallel light beam that is parallel to the length direction of the light guide post (41). The light-emitting element (5) is disposed on the bottom of the mounting groove (11). The parallel light beam emitted by the light-emitting element (5) is parallel to the length direction of the fan handle (1). The parallel light beam emitted by the light-emitting element (5) can pass through the fan shaft (2). A light-blocking tube (12) is disposed at the bottom of the mounting groove (11). One end of the light-blocking tube (12) is connected to the bottom of the mounting groove (11), and the other end abuts against the light guide plate (3). The light-emitting element (5) is located in the inner circle of the light-blocking tube (12). One end of the light guide plate (3) is sleeved on the fan shaft (2). The surface of the light guide plate (3) that abuts against the light blocking tube (12) is arranged with an arc transition. The surface of the light guide plate (3) that abuts against the light blocking tube (12) is set as the light incident surface (31). A first reflective film (32) is attached to the light incident surface (31). The first reflective film (32) is provided with a first light incident interruption (321) and a second light incident interruption (322). When multiple light guide plates (3) form the light guide column (41), the first light incident interruption (321) is connected to the inner ring of the light blocking tube (12). When multiple light guide plates (3) form the fan blade (4), the second light incident interruption (322) is connected to the inner ring of the light blocking tube (12).

2. The fan with lighting function according to claim 1, characterized in that: A filter film (33) and a scattering film (34) are attached to the second light incident interruption (322). The filter film (33) is attached to the outside of the scattering film (34). Multiple filter films (33) are provided, and multiple filter films (33) are correspondingly provided with multiple light guide plates (3). The multiple filter films (33) have different filtering properties.

3. The fan with lighting function according to claim 1, characterized in that: A second reflective film (35) is provided on the outer wall of the light guide plate (3). The second reflective film (35) is parallel to the axis of the fan shaft (2). When multiple light guide plates (3) form the fan blade (4), the parallel light beam emitted by the light-emitting element (5) passes through the second light incident interruption (322), the fan shaft (2) and the second reflective film (35) in sequence.

4. The fan with lighting function according to claim 3, characterized in that: The light guide plate (3) has a light-guiding notch (36) at one end near the light-blocking tube (12). The light-guiding notch (36) and the second light-incident interruption (322) are symmetrically arranged with respect to the center line of the light guide plate (3) in the length direction. An auxiliary light-guiding part (37) is provided on the outer wall of the end of the light guide plate (3) away from the fan shaft (2). The auxiliary light-guiding part (37) and the second reflective film (35) are located on two opposite side walls of the light guide plate (3). After the light passes through the auxiliary light-guiding part (37), the light will move towards the center line of the light guide plate (3) in the length direction.

5. The fan with lighting function according to claim 2, characterized in that: A light guide film (38) is provided at one end of the light guide plate (3) away from the fan shaft (2). The two ends of the light guide film (38) are respectively connected to the side of the two adjacent light guide plates (3) that are close to each other. The surface of the side of the two adjacent light guide plates (3) that are close to each other is provided with a receiving notch (39) for the light guide film (38) to be embedded. When multiple light guide plates (3) form the light guide column (41), the receiving notch (39) on the two adjacent light guide plates (3) forms a receiving through groove (391).

6. The fan with lighting function according to claim 5, characterized in that: When the light guide column (41) is formed on the light guide plate (3) and the outer walls of two adjacent light guide plates (3) near the end of the light guide film (38) abut against each other, the light guide film (38) will undergo extrusion deformation; a locking block (6) and a locking groove (61) are respectively provided on the side surface of the two adjacent light guide plates (3) that are close to each other, and the locking block (6) and the locking groove (61) are both located on the end of the light guide plate (3) near the light guide film (38); the locking block (6) is made of elastic light-transmitting material, and when the locking block (6) is embedded in the locking groove (61), the outer walls of two adjacent light guide plates (3) near the end of the light guide film (38) abut against each other, and the locking block (6) undergoes extrusion deformation.

7. The fan with lighting function according to claim 1, characterized in that: A light-absorbing film (323) is attached to the outer side of the first reflective film (32). The light-absorbing film (323) can be connected to the inner ring of the light-blocking tube (12). The light-absorbing film (323) has a heat dissipation part (3231) extending to the outside of the mounting slot (11).

8. The fan with lighting function according to claim 1, characterized in that: A connecting key (21) is provided on the outer peripheral wall of the fan shaft (2), and the length direction of the connecting key (21) is parallel to the axial direction of the fan shaft (2); the multiple light guide plates (3) are divided into a fixed light guide part (7) and multiple rotating light guide parts (8), the fixed light guide part (7) is fixedly sleeved on the fan shaft (2), and the length direction of the fixed light guide part (7) is parallel to the fan handle (1); the connection between the rotating light guide part (8) and the fan shaft (2) is provided with a rotating hole (81), and the inner wall of the rotating hole (81) is provided with a rotating through groove for the connecting key (21) to be inserted. 82), the rotating through groove (82) extends around the axis of the fan shaft (2), the rotating through groove (82) has a receiving end (821) and an unfolding end (822) along its own extending direction, when the connecting key (21) moves to the receiving end (821), a plurality of light guide plates (3) form the light guide column (41), when the connecting key (21) moves to the unfolding end (822), a plurality of light guide plates (3) form the fan blade (4); a damping pad (9) under compression deformation is provided between the outer wall of the fan shaft (2) and the inner wall of the rotating hole (81).

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