Driving assistance device

Abstract

To make it possible to provide a driving assistance device that can prevent breakdown of a mobile information terminal due to heat from a drive recorder even when the mobile information terminal and the drive recorder unit are integrally arranged.SOLUTION: A driving assistance device according to the present disclosure is a driving assistance device that is attached to the handlebar of a mobile body, and includes a housing portion that holds a mobile information terminal, and a drive recorder unit that is provided on the back side of the housing portion as seen from the driver of the mobile body via a gap portion and records the surroundings of the driver of the mobile body, and dissipates heat from the drive recorder unit to the outside through the gap portion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a driving assistance device. [Background technology]

[0002] Patent Document 1 discloses a mobile phone holder that can be attached to a motorcycle, with a mobile phone and a drive recorder integrated into one unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3237204 Summary of the Invention [Problem to be solved by the invention]

[0004] In the mobile phone holder disclosed in the above-mentioned Patent Document 1, the mobile phone and the drive recorder are in close contact with each other, so there is a risk that the mobile phone may be damaged by heat from the drive recorder.

[0005] The present disclosure has been made in consideration of these circumstances, and aims to provide a driving assistance device that can prevent malfunction of a mobile information terminal due to heat from the drive recorder, even when the mobile information terminal and the drive recorder unit are integrated. [Means for solving the problem]

[0006] The driving assistance device according to the present disclosure comprises: A driving assistance device attached to a handlebar of a moving body, a housing portion for holding a portable information terminal; a drive recorder unit provided on a rear side of the housing unit with a gap therebetween as viewed from a driver of the vehicle, the drive recorder unit recording a scene around the driver of the vehicle; Equipped with Heat from the drive recorder unit is released to the outside through the gap. [Effects of the Invention]

[0007] The present disclosure makes it possible to provide a driving assistance device that can prevent breakdown of a portable information terminal due to heat from the drive recorder even when the portable information terminal and the drive recorder unit are integrally arranged. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a cross-sectional view of a driving assistance device according to a first embodiment. [Figure 2] 1 is a perspective view of a driving assistance device according to a first embodiment. [Figure 3] 1 is a perspective view of a driving assistance device according to a first embodiment. [Figure 4] FIG. 2 is an xz plan view of a driving assistance device according to a comparative example. [Figure 5] 2 is a cross-sectional view of a drive recorder unit in the driving assistance device according to the first embodiment and a drive assistance device according to a comparative example. FIG. [Figure 6] 1 is a cross-sectional view of a driving assistance device according to a first embodiment. [Figure 7] FIG. 2 is an xy plan view showing an example of a heat sink. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In each drawing, the same or corresponding elements are designated by the same reference numerals, and for clarity of explanation, duplicate explanations will be omitted as necessary. In addition, some reference numerals have been omitted to avoid cluttering the drawings. It should be noted that the following drawings are schematic, and the relationship between thickness and planar dimensions, the thickness ratio of each layer, etc., may differ from the actual ones. Therefore, specific thicknesses and dimensions should be determined with reference to the following explanation. Furthermore, it goes without saying that the drawings may include portions in which the dimensional relationships and ratios differ from one another.

[0010] Naturally, the right-handed xyz Cartesian coordinate system shown in each drawing is for the convenience of explaining the positional relationship of the components. Normally, the positive direction of the z axis is vertically upward, and the xy plane is the horizontal plane.

[0011] (Embodiment 1) <Configuration of driving assistance device> First, the configuration of a driving assistance device according to embodiment 1 will be described with reference to Figs. 1 to 3. Fig. 1 is a cross-sectional view of the driving assistance device according to embodiment 1. Figs. 2 and 3 are perspective views of the driving assistance device according to embodiment 1. Figs. 1 and 3 are views showing a state in which a mobile information terminal C1 is held in a housing part H1. Fig. 2 is a view showing a state in which the mobile information terminal C1 is not held in a housing part H1.

[0012] As shown in FIG. 1, the driving assistance device D1 includes a housing H1, a drive recorder unit DR1, and a support S1.

[0013] <Support part> First, the support unit S1 will be described. As shown in FIGS. 1 to 3, the support unit S1 is composed of a rotation mechanism unit R1 and a fixed unit F1. As shown in FIGS. 1 to 3, the fixed unit F1 is attached to and fixed on the handlebar HB of the mobile unit. The mobile unit is a mobile unit equipped with a handlebar, such as a two-wheeled vehicle or micromobility. By attaching the fixed unit F1 of the driving assistance device D1 to the handlebar of the mobile unit, the driver can add a drive recorder function to the mobile unit, which is highly convenient.

[0014] As shown in FIGS. 1 to 3, the rotation mechanism R1 is connected to the fixed part F1 via a pinned part P11. More specifically, as shown in FIG. 1, the rotation mechanism R1 is structured to be rotatable in the direction of the arrow around the pinned part P1. By rotating the rotation mechanism R1, the installation position of the mobile information terminal C1 held in the housing part H1, which will be described later, can be adjusted. Note that the pinned part P11 may have a ball joint structure, allowing the installation position of the mobile information terminal C1 to be adjusted seamlessly.

[0015] <Housing section> Next, the housing H1 will be described. As shown in Figures 1 and 3, the housing H1 holds the mobile information terminal C1. As shown in Figure 2, the housing H1 includes a holding portion J1, an expansion / contraction portion E1, and a mounting portion M1.

[0016] The mounting portion M1 (see FIG. 2) mounts the mobile information terminal C1 as shown in FIG. 1. As shown in FIG. 1, the housing portion H1 holds the mobile information terminal C1 by means of four holding portions J1. That is, the mounting portion M1 holds the mobile information terminal C1 so as to support the bottom portion thereof, and the holding portions J1 hold the mobile information terminal C1 so as to support the corners thereof.

[0017] As shown in Fig. 2, the expansion / contraction section E1 has a mechanism that can expand and contract in the direction of the arrow. As shown in Fig. 2, the two holding sections J1 (on the x-axis positive side) slide in the direction of the arrow in accordance with the expansion and contraction of the expansion / contraction section E1. This allows the housing section H1 to hold the mobile information terminal C1 in accordance with the size and shape of the mobile information terminal C1.

[0018] 1 to 3, four holders J1 are provided to support the corners of the mobile information terminal C1, but this is not limiting. Holders may also be provided on the housing H1 to support the side surfaces (xz plane) of the mobile information terminal C1.

[0019] <Drive recorder unit> Next, the drive recorder unit DR1 will be described. The drive recorder unit DR1 records the surroundings of the driver of the mobile object. As shown in FIGS. 1 to 3, the drive recorder unit DR1 is provided on the back side of the housing part H1 (the negative z-axis side in FIG. 1). The driver of the mobile object is usually positioned on the positive z-axis side of the mobile information terminal C1. Thus, the drive recorder unit DR1 can be said to be on the back side of the housing part H1 when viewed from the driver of the mobile object. The heat dissipation mechanism of the drive recorder unit DR1 will be described later.

[0020] 1 to 3, in the driving assistance device D1, a drive recorder unit DR1 is provided on the back side of a housing part H1 in which a mobile information terminal C1 is installed. That is, in the driving assistance device D1, the mobile information terminal C1 and the drive recorder unit DR1 are integrally arranged. Therefore, the driving assistance device D1 can be installed in a space-saving manner in a mobile body such as a two-wheeled vehicle where space is limited.

[0021] <Void> Next, the gap V1 will be described. As shown in Figures 1 to 3, the gap V1 is provided between the housing H1 and the drive recorder unit DR1. The distance from the bottom surface of the housing H1 to the top surface of the drive recorder unit DR1, i.e., the gap V1, is determined to a predetermined distance depending on, for example, the installation space of the driving assistance device D1 relative to the mobile object.

[0022] As shown in Figure 1, wind passes through the gap V1 in the direction opposite to the traveling direction of the moving object (the direction of the arrow). As the traveling speed of the moving object increases, the amount and speed of the wind taken into the gap V1 increase. In addition, by widening the gap V1, the amount and speed of the wind taken into the gap V1 increase.

[0023] <Driving assistance device according to comparative example> Here, a driving assistance device according to a comparative example will be described with reference to Fig. 4. Fig. 4 is an xz plan view of the driving assistance device according to the comparative example. The driving assistance device D2 shown in Fig. 4 does not have a gap V1, unlike the driving assistance device D1 shown in Figs. 1 to 3. Other configurations are the same as those of the driving assistance device D1 shown in Figs. 1 to 3, and therefore description thereof will be omitted.

[0024] The drive recorder unit DR1 generates heat as it records the surroundings of the driver of the vehicle. Therefore, the drive recorder unit DR1 releases the heat to the outside. That is, as shown by the arrows in FIG. 4, the drive recorder unit DR1 releases heat in the z-axis direction (positive and negative directions).

[0025] The temperature of the housing part H1 rises due to the heat (positive direction of the z-axis) transmitted from the drive recorder unit DR1. This causes the temperature of the mobile information terminal C1 to also rise. Therefore, there is a risk that the mobile information terminal C1 will break down due to the heat from the drive recorder unit DR1.

[0026] Furthermore, the portable information terminal C1 also generates heat as it is used. Therefore, the portable information terminal C1 also dissipates heat to the outside. The temperature of the housing part H1 rises as heat is transferred from the portable information terminal C1. This causes the temperature of the drive recorder unit DR1 to also rise. Therefore, there is a risk that the drive recorder unit DR1 will also break down due to the heat from the portable information terminal C1.

[0027] <Heat dissipation from gaps> However, as described above, the driving assistance device D1 according to the first embodiment has the gap V1 provided between the housing H1 and the drive recorder unit DR1. This prevents heat from being transmitted from the drive recorder unit DR1 to the housing H1. This prevents the mobile information terminal C1 from being damaged by heat from the drive recorder unit DR1. Furthermore, it also prevents heat from being transmitted from the mobile information terminal C1 to the drive recorder unit DR1.

[0028] That is, by providing the gap V1 between the housing H1 and the drive recorder unit DR1, it is possible to prevent heat from being transferred from one of the mobile information terminal C1 and the drive recorder unit DR1 to the other, and therefore, the driving assistance device D1 can prevent failures of the drive recorder unit DR1 and the mobile information terminal C1 regardless of the traveling of the moving object.

[0029] Here, the driving assistance device D1 is a driving assistance device provided in a mobile object having a handlebar. Unlike an automobile, a mobile object having a handlebar is not isolated from the external environment. Therefore, the driving assistance device D1 is directly affected by the external environment. The external environment is, for example, a weather-related environment such as wind, rain, snow temperature, and sunlight.

[0030] The driving assistance device D1 can easily release heat from the drive recorder unit DR1 to the outside by the wind taken into the gap V1. The driving assistance device D1 can also cool the drive recorder unit DR1 and the mobile information terminal C1 by the wind taken into the gap V1. The wind may be taken into the gap V1 by wind blowing or by the moving object.

[0031] In the case of strong winds, the volume and speed of the airflow taken into the gap V1 increase, further enhancing the heat dissipation and cooling to the outside. Also, as the traveling speed of the mobile object increases, the volume and speed of the airflow taken into the gap V1 increase, further enhancing the heat dissipation and cooling to the outside. In this way, the driving assistance device D1 utilizes the direct influence of the external environment to enhance the heat dissipation and cooling to the outside of the drive recorder unit DR1 and the mobile information terminal C1.

[0032] Furthermore, when the mobile object is not in use, the portable information terminal C1 is not attached to the driving assistance device D1, and therefore sunlight falls on the mounting part M1. In the driving assistance device D1, the drive recorder unit DR1 is provided on the rear side of the housing part H1 (the negative z-axis side in FIG. 1), i.e., on the rear side of the mounting part M1 (see FIG. 2). The mounting part M1 acts as a sunshade, and therefore, sunlight is prevented from directly hitting the drive recorder unit DR1. This makes it possible to suppress a rise in temperature of the drive recorder unit DR1.

[0033] <Heat dissipation mechanism for drive recorder unit> Here, the heat dissipation mechanism of the drive recorder unit will be described in detail with reference to Fig. 5. Fig. 5 is a cross-sectional view of the drive recorder unit in the driving assistance device according to embodiment 1 and a driving assistance device according to a comparative example. The upper part of Fig. 5 is a cross-sectional view of the drive recorder unit in the driving assistance device according to embodiment 1. The lower part of Fig. 5 is a cross-sectional view of the drive recorder unit in the driving assistance device according to the comparative example. The cross-sectional view in the upper part of Fig. 5 is an enlarged view of the cross-sectional view of the drive recorder unit in Fig. 1.

[0034] First, the heat dissipation mechanism of the drive recorder unit DR2 of the driving assistance device D2 according to the comparative example will be described with reference to the lower part of Fig. 5. As shown in the lower part of Fig. 5, the drive recorder unit DR2 is composed of a housing 13, a heat sink 10, and a circuit board 12.

[0035] 5, the heat sink 10 and the circuit board 12 are arranged between the housings 13. As shown in the lower part of Fig. 5, in the drive recorder unit DR2, the housing 13, the circuit board 12, the heat sink 10, and the housing 13 are arranged in this order from the bottom of the drive recorder unit DR2.

[0036] Next, a heat dissipation mechanism of the drive recorder unit DR1 of the driving assistance device D1 according to the first embodiment will be described with reference to the upper part of Fig. 5. As shown in the upper part of Fig. 5, the drive recorder unit DR1 is composed of a housing 13, a heat sink 10, a Peltier element body 11, and a circuit board 12.

[0037] As shown in the upper part of Fig. 5, the heat sink 10 is provided at the interface of the gap V1 (see Figs. 1 to 3). The Peltier element body 11 is provided between the heat sink 10 and the circuit board 12. As shown in the upper part of Fig. 5, in the drive recorder unit DR1, the housing 13, the circuit board 12, the Peltier element body 11, and the heat sink 10 are arranged in this order from the bottom of the drive recorder unit DR1.

[0038] The heat sink 10 is made of a metal material, such as aluminum, and dissipates heat from the drive recorder unit DR1 into the gap V1 (see FIG. 1).

[0039] The Peltier element 11 absorbs heat from the circuit board 12 and releases it to the heat sink 10. The Peltier element 11 has a heat dissipation surface and a heat absorption surface. The heat absorption surface of the Peltier element 11 is arranged on the circuit board 12 side. The heat dissipation surface of the Peltier element 11 is arranged on the heat sink 10 side.

[0040] Heat from the circuit board 12 is absorbed by the heat absorption surface of the Peltier element body 11. The heat absorbed by the heat absorption surface of the Peltier element body 11 is then radiated upward (in the positive direction of the z-axis) by the heat radiation surface of the Peltier element body 11. The heat radiated from the heat radiation surface of the Peltier element body 11 is radiated into the gap V1 (see FIG. 1) by the heat radiator 10. In this way, heat from the drive recorder unit DR1 is radiated to the outside from the gap V1 (see FIG. 1). Note that the Peltier element body 11 may not be provided.

[0041] Here, the heat dissipation mechanism of drive recorder unit DR2 (lower part of FIG. 5) is compared with the heat dissipation mechanism of drive recorder unit DR1 (upper part of FIG. 5). Compared to the heat dissipation mechanism of drive recorder unit DR2, the heat dissipation mechanism of drive recorder unit DR1 does not have a housing 13 on the gap V1 side. This allows the thermal resistance of the housing 13 on the gap V1 side of drive recorder unit DR1 to be reduced, making it easier to dissipate heat.

[0042] Here, in the heat dissipation mechanism of the drive recorder unit DR1 (upper part of FIG. 5), when the mobile object is not moving, there are cases where wind is not taken into the gap V1. However, the Peltier element body 11 absorbs heat from the circuit board 12 and releases it to the heat sink 10 without being affected by the movement of the mobile object. Therefore, in the heat dissipation mechanism of the drive recorder unit DR1 (upper part of FIG. 5), even when the mobile object is not moving, heat from the drive recorder unit DR1 is released to the outside through the gap V1 (FIG. 1).

[0043] Furthermore, in the heat dissipation mechanism of the drive recorder unit DR1 (upper part of FIG. 5), the heat dissipation body 10 is provided at the interface of the gap portion V1 (see FIGS. 1 to 3), and therefore the structure is such that the driver cannot touch the heat dissipation body 10. Therefore, the driving assistance device D1 can dissipate heat from the drive recorder unit DR1 while ensuring safety.

[0044] <Wind capture> Next, wind intake by the driving assistance device D1 will be described with reference to Fig. 6. Fig. 6 is a cross-sectional view of the driving assistance device according to the first embodiment. Fig. 6 is a diagram showing three states where the mobile information terminal C1 is attached at different positions (angles). The angle is the angle between a line parallel to the z-axis and a line parallel to the traveling direction of the moving object. From the left side of Fig. 6, the attached angles of the mobile information terminal C1 are shown as 0 degrees, 45 degrees, and 90 degrees. In Fig. 6, the traveling direction of the moving object is the right side of the drawing in all cases.

[0045] 6, the protrusion OV1 of the housing H1 is a part of the housing H1. The protrusion OV1 protrudes toward the drive recorder unit DR1. A bottom surface SL1 of the protrusion OV1 has a negative slope when viewed in the xz plane.

[0046] The overhang corresponding portion OV2 of the drive recorder unit DR1 is a part of the drive recorder unit DR1. It is preferable that the overhang portion OV1 and the overhang corresponding portion OV2 are formed so that the distance of the gap V1 between the overhang portion OV1 and the overhang corresponding portion OV2 is approximately the same as the distance of the gap V1 between the mounting portion M1 (see the left diagram in FIG. 6) and the heat sink 10 (see the left diagram in FIG. 6).

[0047] By forming the overhanging portion OV1 and the overhang corresponding portion OV2, the gap portion V1 can be said to be a gap whose wind intake side is bent.

[0048] As shown in the left diagram of FIG. 6, when the moving body moves, the wind becomes an airflow directed in the negative direction of the z axis. As shown in the left diagram of FIG. 6, because the protruding portion V1 is formed, the wind taken in the gap portion V1 passes through the gap portion V1 along the bottom surface SL1 and flows out to the outside of the driving assistance device D1. In this way, by forming the protruding portion V1 in the driving assistance device D1, the wind caused by the movement of the moving body reliably passes through the gap portion V1. This allows the driving assistance device D1 to enhance heat dissipation and cooling to the outside of the drive recorder unit DR1 and the mobile information terminal C1.

[0049] The tip end T1 of the overhanging portion OV1 will be described with reference to the rightmost diagram in Fig. 6. As shown in the rightmost diagram in Fig. 6, the tip end T1 of the overhanging portion OV1 is recessed from the bottom portion 13L of the drive recorder unit DR1. That is, as shown in the rightmost diagram in Fig. 6, the height h2 in the z-axis direction of the tip end T1 of the overhanging portion OV1 is greater than the height h1 in the z-axis direction of the bottom portion 13L of the unit DR1.

[0050] As shown in the rightmost diagram of Fig. 6, when the moving body moves, the wind becomes an airflow directed in the negative direction of the x-axis. As shown in the rightmost diagram of Fig. 6, the tip T1 of the protruding portion OV1 is recessed from the bottom portion 13L of the drive recorder unit DR1, which makes it easy to take in the wind into the gap V1.

[0051] Furthermore, the wind taken into the gap V1 passes through the gap V1 along the surface SL2 and flows out to the outside of the driving assistance device D1. In this way, in the driving assistance device D1, the tip end T1 of the protruding portion OV1 is recessed from the bottom portion 13L of the drive recorder unit DR1, so that the wind generated by the traveling of the mobile object can be reliably taken into the gap V1 and reliably passes through the gap V1. This allows the driving assistance device D1 to enhance heat dissipation and cooling of the drive recorder unit DR1 and the mobile information terminal C1 to the outside.

[0052] The closer the z-axis direction of the mobile information terminal C1 or housing H1 is to the direction of travel of the mobile object, that is, the closer it is to the state shown in the left diagram of FIG. 6, the easier it is for the tip T1 of the overhanging portion OV1 to take in wind.

[0053] In addition, in FIG. 6, an example is shown in which the tip end T1 of the overhanging portion OV1 is recessed from the bottom portion 13L of the drive recorder unit DR1 to facilitate the intake of airflow into the gap V1. However, this is not limited thereto, and a flap portion may be provided near the inflow side of the gap V1. The flap portion can change the intake direction of the airflow flowing into the gap V1 depending on the mounting position (angle) of the mobile information terminal C1. This makes it easier for the driving assistance device D1 to take in airflow into the gap V1. The flap portion is provided near the inflow side of the gap V1, for example, on the overhanging portion OV1 or the overhang-corresponding portion OV2.

[0054] <Fluid outflow> Next, the discharge of liquid from the driving assistance device D1 will be described with reference to Fig. 7. Fig. 7 is an xy plan view showing an example of a heat dissipation body. In Fig. 7, the heat dissipation body 10 has a heat sink shape. More specifically, the heat dissipation body 10 has protrusions P1 and grooves G1 formed alternately in the x-axis direction.

[0055] As described above, the driving assistance device D1 is affected by the external environment. On bad weather days with rain or snow, liquid (rain or melted snow) flows into the gap V1 (see FIGS. 1 to 3). FIG. 7 shows an example in which fluid flows into the gap V1 (see FIGS. 1 to 3) from the right side.

[0056] 7, the groove G1 has a shape that narrows from the positive y-axis direction to the negative y-axis direction. The groove G1 may be provided with a slope in the negative y-axis direction to facilitate the flow of liquid. Groove G2 has a linear shape along the x-axis direction. Groove G2 is a groove provided on the edge of heat sink 10. Like groove G1, groove G2 may be sloped in the negative x-axis direction to facilitate liquid flow. Alternatively, groove G1 may be formed in the x-axis direction so that its direction is the same as the direction of travel of the mobile object, in which case groove G2 may not be provided. Liquid accumulated in groove G1 is easily swept away by wind caused by the travel of the mobile object. Alternatively, grooves G1 and G2 may be omitted, and the surface of heat sink 10 on the side of gap V1 may be coated with a water-repellent material, such as a silicone resin material, to promote liquid flow.

[0057] The fluid that has flowed into the gap V1 (see FIGS. 1 to 3) flows through the groove G1 to the groove G2 in the direction of the arrow in FIG. 7 (the negative z-axis direction). The liquid that has flowed into the groove G2 flows through the groove G2 to the outside of the driving assistance device D1 in the direction of the arrow in FIG. 7 (the negative x-axis direction).

[0058] In this way, the grooves G1 and G2 are grooves that allow the fluid that has flowed into the gap V1 (see FIGS. 1 to 3) to flow out. With this configuration, even if the heat dissipation body 10 has a heat sink shape, it is possible to prevent liquid from accumulating inside the driving assistance device D1.

[0059] The present disclosure has been described above in accordance with the above-described embodiments, but the present disclosure is not limited to the configurations of the above-described embodiments, and naturally includes various modifications, alterations, and combinations that a person skilled in the art could make within the scope of the claims of the present application. [Explanation of symbols]

[0060] 10 Heat sink 11 Peltier element body 12 Circuit Board 13. Cabinet 13L bottom C1 Mobile Information Terminal D1 Driving assistance device D2 Driving assistance device DR1, DR2 drive recorder units E1 Expandable part F1 fixed part G1 groove G2 groove H1 housing part HB Handlebar J1 holding part M1 mounting section OV1 overhang OV2 overhang compatible part P1 convex part P11 Pinned part R1 Rotation mechanism S1 support part SL1 bottom SL2 side T1 tip V1 cavity

Claims

1. A driving assistance device attached to a handlebar of a moving body, a housing portion for holding a portable information terminal; a drive recorder unit provided on a rear side of the housing unit with a gap therebetween as viewed from a driver of the vehicle, the drive recorder unit recording a scene around the driver of the vehicle; Equipped with Heat from the drive recorder unit is released to the outside through the gap. Driving assistance device.

2. the drive recorder unit includes a heat sink at an interface with the gap portion; The driving assistance device according to claim 1 .

3. a Peltier element body having a heat absorption surface and a heat radiation surface between the heat dissipation body and the circuit board of the drive recorder unit; the heat absorbing surface is disposed on a circuit board side of the drive recorder unit, The heat dissipation surface is disposed on the heat sink side. The driving assistance device according to claim 2 .

4. A part of the housing part protrudes toward the drive recorder unit. The driving assistance device according to claim 2 or 3.

5. a tip end of a part of the housing portion is recessed from a bottom portion of the drive recorder unit; The driving assistance device according to claim 4.

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