Small-sized mobility

Abstract

To provide a small-sized mobility designed to achieve waterproofness against rain water and lowering of heat-resistance temperature against a temperature rise due to insolation.SOLUTION: A small-sized mobility 1 includes a cover 2 that covers the external, and an awning 3 formed on the top of the cover 2. The awning 3 is supported by at least one support 7 in order to form an air layer 8 by the side of the cover 2. The awning 3 has a communication hole 4, which communicates with the air layer 8, formed at a position that covers the center in a transverse direction of the awning 3 along a longitudinal direction of the awning 3. Accordingly, an updraft F generated when the temperature of the awning 3 rises due to insolation is discharged through the communication hole 4 while entraining high-temperature air in the air layer 8 into an ambient air flow Fa.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a compact mobility vehicle, and more particularly to a compact mobility vehicle having a cover that covers the outside and a canopy provided on the upper surface of the cover. [Background technology]

[0002] A technology is known that includes a cover that covers the outside of onboard electronic devices installed in a vehicle, such as various electronic devices that may generate heat by consuming power, and a canopy that is provided on the upper surface of the cover (see, for example, Patent Document 1).

[0003] Patent document 1 discloses a technology in which a ventilation hole is provided at the top of the housing (hereinafter referred to as the cover) of an in-vehicle electronic device, a visor portion extends diagonally above the ventilation hole, and a groove is provided at the upper end of the visor, and rainwater that seeps in from above is drained down the groove, thereby preventing it from seeping into the interior of the cover. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-145680 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the device described in Patent Document 1 has ventilation holes at the top of the cover, so it has a canopy that extends diagonally upwards.In the case of mobility vehicles, the top surface is visible to people, which has a significant impact on the design, and there is also the concern that rainwater may seep into the cover due to wind or vibration.

[0006] In addition, the product described in Patent Document 1 has diagonally extending eaves and grooves, which increases the area exposed to sunlight, causing the temperature of the top surface of the cover to rise significantly due to sunlight, and there is a concern that the heat will be transferred to the surrounding air, causing the temperature of the electronic devices inside the cover below to rise.

[0007] To prevent heat from being transferred to the bottom, it is necessary to increase the distance between the top surface of the cover and the electronic devices inside. However, if the mounting space needs to be reduced, the distance between the top surface of the cover and the electronic devices needs to be reduced, which raises concerns about a trade-off between increasing the distance between the top surface of the cover and the electronic devices and preventing heat transfer.

[0008] The present invention has been made in consideration of the above circumstances, and has as its object to provide a small mobility vehicle that is waterproof against rainwater and has a lower heat resistance temperature against temperature rises due to solar radiation. [Means for solving the problem]

[0009] In order to solve the above problem, the present invention provides a small mobility vehicle comprising a cover that covers the outside and a canopy provided on the upper surface of the cover, wherein the canopy is supported by at least one support pillar to form an air layer between the cover and the canopy, and the canopy has a communication hole that communicates with the air layer along the longitudinal direction of the canopy and at a position that includes the center of the canopy in the lateral direction.

[0010] This configuration allows the eaves to block direct sunlight from reaching the cover that covers the outside, and provides insulation through the air layer formed between the cover and the eaves. Furthermore, when the temperature of the eaves rises due to solar radiation, the air is heated and expands, becoming lighter than the surrounding air, creating an updraft. By providing a communication hole at the starting position of this updraft, i.e., along the longitudinal direction of the eaves and including the center of the eaves in the transverse direction, the hot air in the air layer between the eaves and the cover can be carried by the updraft through the communication hole and discharged to the outside. [Effects of the Invention]

[0011] According to this invention, by configuring as described above, it is possible to achieve waterproofing against rainwater, and to efficiently lower the heat-resistant temperature by utilizing the rising air currents generated when the eaves are heated by solar radiation. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a schematic perspective view showing an example of a compact mobility vehicle according to the present invention. [Figure 2] FIG. 2 is a schematic cross-sectional view of the compact mobility vehicle. [Figure 3] FIG. 3 is a schematic cross-sectional side view of FIG. 2. [Figure 4] 1 is a schematic perspective view showing a state in which a compact mobility vehicle according to the present invention is in use. [Figure 5] FIG. 2 is a schematic cross-sectional view showing the compact mobility vehicle in use. [Figure 6] FIG. 6 is a schematic cross-sectional side view of FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 3, the compact mobility 1 according to the present invention comprises a square box-shaped cover 2 that covers the top of a plate-shaped base 2a, canopies 3 provided on the top surface of the cover 2, wheels 5 provided on both sides of the lower part of the cover 2, and electronic equipment 6 that is disposed inside the cover and forms part of the drive source for the wheels 5. Here, the electronic equipment 6 refers to various electronic equipment that can generate heat by consuming power, including, for example, electrical equipment equipped with heat-generating electronic components such as power semiconductors, batteries, motors, etc. A paint with low absorption rate is applied to the outer peripheral surface, i.e., the side and top surfaces, of the cover 2. This makes it possible to suppress a temperature rise inside the cover due to a temperature rise caused by solar radiation.

[0014] The eaves 3 is formed from a rectangular plate having the same shape as the outer shape of the top surface of the cover 2, and is supported by four support columns 7 erected at the four corners of the cover 2. As a result, an air layer 8 that is open on all four sides is formed between the top surface of the cover 2 and the eaves 3. In this case, the eaves 3 is supported by four support columns 7, but it is not necessary to support the eaves 3 in this manner. It is sufficient for the eaves 3 to be supported by at least one support column 7. As a result, an air layer 8 that is open on all four sides is formed, as described above.

[0015] Additionally, the eaves 3 are provided with communication holes 4 formed as elongated holes that communicate with the air layer 8, along the longitudinal direction of the eaves 3 and at a position that includes the center of the eaves 3 in the short direction. In this way, by providing the elongated communication holes 4 along the longitudinal direction of the eaves 3 and at a position that includes the center of the eaves 3 in the short direction, the light-receiving area of ​​the eaves 3 that receives solar radiation can be increased, and when the eaves 3 is heated by solar radiation, the high-temperature air in the air layer 8 between the eaves 3 and the cover 2 can be carried on an ascending air current through the communication holes 4 and discharged to the outside.

[0016] Next, the use state of the compact mobility 1 will be described with reference to FIGS. When the eaves 3 are heated by solar radiation and the surface temperature rises, the air is warmed and its volume expands, becoming lighter than the surrounding air, creating an updraft. At this time, the hot air gathers in the center of the cover 2, so by positioning the communication holes 4 along the longitudinal direction of the eaves 3 and including the center of the lateral direction of the eaves 3 to coincide with the start of the updraft F, the updraft F will draw in the airflow Fa around the upper periphery of the eaves 3 and the cover 2 from all sides of the air layer 8 and be exhausted from the communication holes 4.

[0017] According to the compact mobility embodiment configured as described above, direct sunlight can be blocked from reaching the cover 2, which is covered by the eaves 3, and thermal insulation can be achieved by the air layer 8 formed between the cover 2 and the eaves 3. Furthermore, by providing a communication hole 4 at the position where the rising air current F, which is generated when the temperature of the eaves 3 rises due to solar radiation, begins, i.e., a position along the longitudinal direction of the eaves 3 and including the center of the lateral direction of the eaves 3, the rising air current F draws in the air flow Fa around the upper periphery of the eaves 3 and the cover 2 from all four sides of the air layer 8 and is then exhausted from the communication hole 4. Therefore, waterproofing against rainwater is achieved, and the heat-resistant temperature can be efficiently reduced by utilizing the rising air current F, which is generated when the eaves 3 is heated by solar radiation.

[0018] In order to confirm the effect of the compact mobility 1 of the above embodiment, a comparative compact mobility (not shown) was fabricated with the same structure except for the provision of communication holes 4 in the eaves 3, i.e., without the provision of communication holes 4 in the eaves 3, and tested under the same conditions. Here, the compact mobility 1 is referred to as the example.

[0019] The test was carried out when the temperature of the air layer 8 was 50°C for both the comparative example and the example. As a result of the test, no temperature drop was observed in the comparative example, the eaves 3, the air layer 8, or inside the cover. In contrast, in the example, a drop in the surface temperature of the eaves, a drop in the air temperature in the air layer 8 between the eaves 3 and the cover 2, and a drop in the air temperature inside the cover were confirmed.

[0020] In the above embodiment, the communicating holes 4 are described as being elongated holes, but the communicating holes 4 do not necessarily have to be elongated holes. The communicating holes only need to be provided along the longitudinal direction of the eaves 3 and at a position that includes the center of the lateral direction of the eaves 3. For example, the communicating holes may be multiple circular holes, elliptical holes, rectangular holes, or other holes of any shape that are provided at appropriate intervals along the longitudinal direction of the eaves 3 and at a position that includes the center of the lateral direction of the eaves 3. This will provide the same effect as above.

[0021] In the above embodiment, the case where the wheels 5 are provided on the cover 2 has been described, but the present invention is not limited to this. The present invention can also be applied to a case where the cover 2 is not provided with the wheels 5 and is mounted on a separate cart or the like. In this case, the same effect as above can be obtained. [Explanation of symbols]

[0022] 1. Small mobility 2 Cover 3 Eaves 4 Communication hole 5 wheels 6 Electronic equipment 7 pillars 8 Air Layer F. Updraft Fa Air Flow

Claims

[Claim 1] A compact mobility vehicle comprising a cover that covers the outside and a canopy provided on an upper surface of the cover, The canopy is supported by at least one support so as to form an air layer between the canopy and the cover, The eaves are provided with a communication hole communicating with the air layer along the longitudinal direction of the eaves and at a position including a central portion in the lateral direction of the eaves. Compact mobility characterized by:

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