JP2015020624A - Instrument panel structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an instrument panel structure which can further effectively utilize waste heat discharged from a heat source member.SOLUTION: Heat in a housing 32 is moved to air in a communication member 36 by making the inside of the housing 32 and the inside of a defroster nozzle 18 communicate with each other, and a temperature is raised. In other words, waste heat discharged from the inside of the housing 32 is once collected by the communication member 36. When operating a front defroster, air in the communication member 36 is sucked by an air flow (arrow A) in the defroster nozzle 18. By this constitution, a temperature of the air is raised in terms of an exponential function, and when frost is generated at front glass 12, the frost can be effectively removed in a short time. That is, according to this embodiment, not only heat generated from a head-up display device 24 can be discharged, but also the discharged waste heat can be effectively utilized.

Description

  The present invention relates to an instrument panel structure.

  In the following Patent Documents 1 and 2, in order to prevent the inside of the housing from being overheated by the heat generated by the indicator (heat source member) of the head-up display device arranged in the housing, a heat radiating member is provided in the housing, A technique for dissipating heat (exhaust heat) from the heat in the housing to the outside via the heat dissipating member is disclosed. Patent Document 3 below discloses a technique in which a head-up display device is provided in an air conditioning duct. Further, Patent Document 4 below discloses a technique for suppressing the clouding of the flat mirror of the head-up display device by heat generated from the LED of the head-up display device.

JP 2010-079169 A1 JP 2010-208565 A JP 2007-069772 A JP 2009-222880 A

  In these prior arts, there is room for improvement in terms of more effectively and effectively using the heat discharged from the heat source member.

  In view of the above facts, the present invention has an object to obtain an instrument panel structure that exhausts heat generated from a heat source member and can effectively use the exhausted heat more effectively.

  The instrument panel structure according to the first aspect of the present invention includes a heat source member provided inside the instrument panel main body, the instrument panel main body, and an air flow blown toward the front windshield glass. A front defroster nozzle; and a heat transfer body that connects the front defroster nozzle and the heat source member and imparts heat generated by the heat source member to the air flow.

  In the instrument panel structure according to the first aspect of the present invention, the front defroster nozzle provided in the instrument panel main body and the heat source member provided inside the instrument panel main body are connected by a heat transfer body. Thereby, the heat generated by the heat source member can be applied to the air flow in the front defroster nozzle. That is, the heat from the heat source member can be exhausted to the front defroster nozzle side.

  In addition, the front defroster nozzle blows an air flow toward the front windshield glass to suppress fogging of the front windshield glass, etc., but by applying heat to the airflow, fogging is effectively performed. It is suppressed. That is, in the present invention, the temperature of the air flow in the front defroster nozzle is increased by causing the heat generated by the heat source member to be transferred to the front defroster nozzle by the heat transfer body (heat conduction / convection heat transfer). Can do. Therefore, when fogging occurs on the front windshield glass, the fogging can be effectively removed in a short time.

  The instrument panel structure according to the present invention as set forth in claim 2 is the instrument panel structure according to the present invention as set forth in claim 1, wherein the heat transfer body is a heat dissipating member that transfers heat by heat conduction.

  In the instrument panel structure according to the second aspect of the present invention, since the heat transfer body is a heat radiating member, the heat generated by the heat source member is transferred to the air flow in the front defroster nozzle through the heat radiating member. Can be granted. Thereby, the temperature of the air flow in the front defroster nozzle can be raised.

  The instrument panel structure according to a third aspect of the present invention is the instrument panel structure according to the second aspect of the present invention, wherein the heat source member is provided inside the instrument panel main body and the front windshield glass. It is a light source part which comprises some head-up display apparatuses which project an image.

  The light source unit in the head-up display device needs a higher luminance than the light source unit in instruments such as a meter in order to display a virtual image (image) on the front windshield glass. For this reason, in the instrument panel structure according to the third aspect of the present invention, taking advantage of the high temperature of the light source section, the light source section constituting a part of the head-up display device is used as a heat source member, and the light source section Can effectively use the heat generated by

  An instrument panel structure according to a fourth aspect of the present invention is the instrument panel structure according to the third aspect of the present invention, wherein the light source part is accommodated in a housing, and the heat transfer body is disposed in the housing and the instrument panel structure. This is a hollow communication member that communicates with the front defroster nozzle.

  In the instrument panel structure according to the fourth aspect of the present invention, since the light source part is accommodated in the housing, the heat generated by the light source part is trapped in the housing. By connecting the inside of the housing and the inside of the front defroster nozzle by the hollow communication member, the heat in the housing moves to the air in the communication member, and the temperature of the air in the communication member rises. The air in the communicating member is sucked by the air flow in the front defroster nozzle and merges with the air flow, and the temperature of the air flow in the front defroster nozzle can be increased by convective heat conduction.

  An instrument panel structure according to a fifth aspect of the present invention is the instrument panel structure according to the fourth aspect of the present invention, wherein a seal member is provided at a connecting portion between the communication member and the front defroster nozzle. .

  In the instrument panel structure according to the fifth aspect of the present invention, a seal member is provided at a connecting portion between the communication member and the front defroster nozzle, and the seal member suppresses air leakage from the front defroster nozzle. it can. Further, wind leakage from the communication member to the front defroster nozzle can be suppressed.

  The instrument panel structure according to the first aspect of the present invention has an excellent effect that the heat discharged from the heat source member can be effectively used more effectively.

  The instrument panel structure according to the second aspect of the present invention can exhaust heat in a state where pressure loss in the air flow blown from the front defroster nozzle is suppressed as compared with heat transfer by convective heat transfer. , Has an excellent effect.

  The instrument panel structure according to the third aspect of the present invention has an excellent effect that when fog is generated in the front windshield glass, the fog can be effectively removed in a short time.

  In the instrument panel structure according to the fourth aspect of the present invention, since the light source part is accommodated in the housing, the heat transfer is more effectively performed as compared with the case where the light source part is disposed in the open space. It has the outstanding effect that it can be made to do.

  The instrument panel structure according to the present invention described in claim 5 can suppress pressure loss in the air flow blown out from the front defroster nozzle, and also suppress air leakage from the communicating member to the front defroster nozzle. It has an excellent effect that heat can be stably transferred.

It is the schematic perspective view seen from the vehicle interior diagonally back side which shows the instrument panel structure concerning a 1st embodiment. It is a schematic diagram for demonstrating the effect | action of the instrument panel structure which concerns on 1st Embodiment. It is the schematic perspective view seen from the vehicle interior slanting back and slanting lower part which shows the principal part of the instrument panel structure which concerns on 1st Embodiment. It is sectional drawing which shows the state cut | disconnected along the 3-3 line of FIG. It is sectional drawing which shows the modification corresponding to FIG. It is sectional drawing which shows the state to which the instrument panel structure which concerns on 2nd Embodiment was applied in the cut surface along line 5-5 of FIG.

  Hereinafter, an instrument panel structure according to an embodiment of the present invention will be described with reference to the drawings. In these drawings, an arrow FR appropriately shown indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow OUT indicates the vehicle width direction outer side.

(First Embodiment)
(Configuration of instrument panel structure)
First, the instrument panel structure according to the first embodiment will be described. As shown in FIG. 1, a vehicle 10 such as an automobile is provided with a front windshield glass (hereinafter referred to as “front glass”) 12 on the upper side of the front portion in the vehicle front-rear direction in a passenger compartment 11. An instrument panel 14 as an instrument panel main body constituting a part of the instrument panel structure is disposed below the windshield 12.

  The instrument panel 14 includes an upper wall portion 14A arranged along the vehicle front-rear direction and the vehicle width direction at the front portion in the vehicle front-rear direction. An air conditioner (hereinafter referred to as “air conditioner”) 16 is disposed inside the instrument panel 14, and a hollow front defroster nozzle (hereinafter referred to as “defroster nozzle”) 18 is provided in the air conditioner 16. It is connected.

  The defroster nozzle 18 rises upward in the vehicle vertical direction and widens in the vehicle width direction as it goes upward in the vehicle vertical direction. That is, the defroster nozzle 18 is formed in an inverted trapezoidal shape when viewed from the rear side in the vehicle front-rear direction, and is configured such that the width of the upper end portion 18A in the vehicle vertical direction is larger than the width of the lower end portion 18B.

  The defroster nozzle 18 includes a front wall portion 18C disposed at the front portion in the vehicle front-rear direction and a rear wall portion 18D disposed at the rear portion in the vehicle front-rear direction so as to face the front wall portion 18C. A pair of side wall portions 18E and 18F that connect the front wall portion 18C and the rear wall portion 18D and face each other are formed in a state of being curved inward in the vehicle width direction between the upper end portion 18A and the lower end portion 18B. ing. The side wall portions 18E and 18F, the front wall portion 18C and the rear wall portion 18D constitute a flow path 20 in the defroster nozzle 18.

  An upper end portion 18A of the defroster nozzle 18 is arranged along the lower end portion 12A of the windshield 12, and a defroster opening 18A1 formed in the upper end portion 18A has a current plate (shown in the figure) along the vehicle front-rear direction. (Omitted) are provided. When the front defroster is operated, for example, an air flow (arrow A) whose temperature is adjusted by the air conditioner 16 is blown out from the defroster opening 18A1, and the air flow is blown out in a state rectified by the rectifying plate. Is done.

  In this way, the air flow (arrow A) blown out from the defroster opening 18A1 is blown toward the windshield 12. Thereby, while suppressing generation | occurrence | production of the fog of the windshield 12, the fog generated on the windshield 12 is removed, or freezing is thawed.

  A head-up display device (so-called HUD system) 24 is disposed inside the instrument panel 14 on the driver's seat side (here, the left side of the drawing). In this head-up display device 24, on the driver's seat side of the windshield 12, for example, a basic vehicle such as a traveling speed of the vehicle 10 or a speed limit of the road in cooperation with an instrument system 25 such as a meter shown in FIG. Information is displayed. In addition to these vehicle information, the direction of travel is displayed with an arrow by cooperating with the car navigation system 27, or a warning is displayed using a sensor (not shown) that detects an obstacle. Is also possible.

  As shown in FIG. 3, the head-up display device 24 displays an image such as vehicle information displayed on a display panel 28 such as a liquid crystal panel by light emitted from a light source unit 26 configured by, for example, LEDs. The light is reflected by the reflection mirror 30 and projected as a virtual image 31 at a predetermined position on the windshield 12.

  In the present embodiment, the head-up display device 24 includes a hollow box-shaped housing 32, and a light source unit 26 and a display panel 28 as heat source members are disposed in the housing 32. In the housing 32, a window 32A1 is formed in a side wall 32A located on the outer side in the vehicle width direction, and an image displayed on the display panel 28 is transmitted to the reflection mirror 30 (see FIG. 1) through the window 32A1. It is designed to be transparent.

  Here, in the housing 32, a rectangular communication port 34 that communicates the inside and the outside of the housing 32 is formed in the side wall portion 32 </ b> B arranged to face the side wall portion 32 </ b> A. From the inner edge portion of the communication port 34, a frame-like flange portion 34A projects outward from the housing 32 so as to be orthogonal to the side wall portion 32B.

  The communication port 34 is fitted (connected) with one end portion 36A in the longitudinal direction of the communication member 36 as a heat transfer body formed in a rectangular tube shape with a resin having low thermal conductivity. On the other hand, a rectangular communication port 38 (see FIG. 4) that communicates the inside and outside of the defroster nozzle 18 is formed in the side wall portion 18 </ b> E located outside the vehicle width direction in the defroster nozzle 18. From the inner edge portion of the communication port 38, a frame-shaped flange portion 38A projects outward from the side wall portion 18E of the defroster nozzle 18 so as to be orthogonal to the side wall portion 18E. The other end 36 </ b> B in the longitudinal direction of the communication member 36 is connected to the communication port 38.

  A seal member 42 is provided at the connecting portion 40 between the communication member 36 and the communication port 38 of the defroster nozzle 18. Note that a sealing member (not shown) is also provided at the connection portion 44 between the communication member 36 and the communication port 34 of the housing 32, as with the connection portion 40.

(Operation and effect of instrument panel structure)
In the present embodiment, as shown in FIG. 3, the light source unit 26 of the head-up display device 24 is accommodated in a housing 32, and the communication member 36 in which the housing 32 and the defroster nozzle 18 are hollow. It is communicated by.

  In this way, by connecting the inside of the housing 32 and the inside of the defroster nozzle 18 by the communication member 36, the heat in the housing 32 moves to the air in the communication member 36, and the temperature of the air in the communication member 36 is changed. To rise. That is, the heat generated by the light source unit 26 is transferred (exhaust heat) to the communication member 36 side. Therefore, the heat exhausted from the inside of the housing 32 is temporarily recovered by the communication member 36 (see FIG. 2). Thereby, the heat by the light source part 26 is exhausted, and the cooling efficiency of the head-up display device 24 is also improved.

  As shown in FIG. 1, when the front defroster is operated, an air flow (arrow A) generated by the air conditioner 16 is blown out toward the windshield 12 through the defroster nozzle 18. At this time, as shown in FIG. 4, due to the air flow (arrow A) in the defroster nozzle 18, a negative pressure is generated on the inner wall surface 46 side of the defroster nozzle 18, and the air in the communication member 36 is sucked. (Arrow B). Thereby, the air in the communication member 36 merges with the air flow (arrow A). That is, the air in the housing 32 is thermally transferred (convective heat transfer) to the air flow (arrow A).

  As a result, the temperature of the air flow (arrow A) rises exponentially, and when the windshield 12 is fogged or frozen, the fog can be effectively removed in a short time, or the freezing is thawed. be able to. From the above, according to the present embodiment, not only the heat generated from the head-up display device 24 shown in FIG. 1 can be exhausted, but the exhausted heat can be more effectively utilized.

  In addition, seal members 42 are provided at the connecting portions 40 and 44 between the communication member 36 and the housing 32 and the defroster nozzle 18. This seal member 42 can suppress air leakage from the defroster nozzle 18. For this reason, the pressure loss in the airflow (arrow A) blown out from the defroster nozzle 18 can be suppressed.

  Here, the communication member 36 is formed in a rectangular tube shape, and the cross-sectional shape at the other end 36B in the longitudinal direction of the communication member 36 is a frame shape, but is not limited thereto. For example, as shown in FIG. 5, a lid 48 that reduces the opening area is provided at the other end 36 </ b> B of the communication member 36, and the opening 50 is provided downstream in the flow direction of the air flow (arrow A) of the defroster nozzle 18. You may make it provide. Thereby, while being able to prevent the said air flow from wrapping around to the communicating member 36 side, the pressure loss of an air flow can be suppressed.

Second Embodiment>
(Configuration of instrument panel structure)
Next, an instrument panel structure according to the second embodiment will be described. In addition, about the structure substantially the same as 1st Embodiment, the same code | symbol is attached | subjected and description is omitted.

  In this embodiment, as shown in FIG. 3, instead of the connecting member 36 connected between the side wall portion 32B of the housing 32 and the side wall portion 18E of the defroster nozzle 18, as shown in FIG. A heat dissipating member 52 as a moving body is connected. 6 shows only one end side in the longitudinal direction of the heat radiating member 52 connected to the side wall 18E side of the defroster nozzle 18 in correspondence with FIG. The heat radiating member 52 is formed in a prismatic shape with a metal such as aluminum having a high thermal conductivity, and one end 52A in the longitudinal direction of the heat radiating member 52 is connected to the side wall 18E of the defroster nozzle 18. The other end portion in the longitudinal direction of the heat dissipating member 52 is divided into a plurality of fins 54 to improve exhaust heat efficiency. Note that the fin 52 is set to have a length that does not protrude into the flow path 20.

(Operation and effect of instrument panel structure)
In the present embodiment, as shown in FIG. 6, since the heat transfer body is the heat radiating member 52, the heat generated by the light source unit 26 (see FIG. 1) is transmitted through the heat radiating member 52 by heat conduction. Heat transfer into the nozzle 18 (arrow C). Thereby, the temperature of the air flow A in the defroster nozzle 18 can be raised at the time of defroster operation. According to the present embodiment, heat can be exhausted without pressure loss in the air flow (arrow A) blown from the defroster nozzle 18.

  The fins 54 are set to have a length that does not protrude into the flow path 20. However, if the fin 54 has a shape that does not disturb the flow of the air flow A or a shape that has a rectifying function, It may be formed so as to overhang. Moreover, you may make it the outer periphery of the said heat radiating member 52 coat | cover with the heat insulation member (illustration omitted) in the one end side of the heat radiating member 52. FIG. Thereby, the heat in the housing 32 can be effectively transferred to the defroster nozzle 18.

<Other embodiments>
In the present embodiment, as shown in FIG. 3, the housing 32 and the defroster nozzle 18 are communicated with each other. However, the heat generated by the light source unit 26 flows through the air flow in the defroster nozzle 18 (arrow A). However, the present invention is not limited to this as long as it can be transferred to the heat. For example, the housing 32 is not necessarily required, and the light source unit 26 and the defroster nozzle 18 may be directly connected by a heat transfer body having high thermal conductivity.

  In the present embodiment, as shown in FIG. 1, the light source unit 26 and the defroster nozzle 18 constituting the head-up display device 24 are connected. In the head-up display device 24, the virtual image 31 is projected on the windshield 12, and thus requires higher luminance than daytime sunlight. For this reason, since the power consumption in the light source part 26 becomes large, although it is suitable for utilizing exhaust heat effectively, it does not restrict to this.

  For example, although not shown, instead of the light source unit 26 in the head-up display device 24, the light source unit and the defroster nozzle 18 in the system 25 (see FIG. 2) such as a meter disposed on the instrument panel 14. May be connected. Further, the light source unit for the liquid crystal panel that constitutes a part of the car navigation system 27 (see FIG. 2) and the defroster nozzle 18 may be coupled, and the plurality of light source units and the defroster nozzle 18 may be connected. You may make it connect. Of course, a heat source member other than the light source unit may be used.

  Moreover, in this embodiment, although LED was used as the light source part 26, it is needless to say that not only LED but other light sources may be used. In addition, the shape of the communication member 36 is not limited to a rectangular tube shape, and the shape of the heat dissipation member 52 is not limited to a prismatic shape.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

10 Vehicle 12 Windshield (front windshield glass)
14 Instrument panel (instrument panel body)
18 Defroster nozzle (Front defroster nozzle)
24 Head-up display device 26 Light source part (heat source member)
31 Virtual Image (Image)
32 Housing 36 Communication member (heat transfer body)
42 Sealing member 52 Heat dissipation member (Heat transfer body)

Claims (5)

A heat source member provided inside the instrument panel body,
A front defroster nozzle that is provided in the instrument panel body and blows an air flow toward the front windshield glass;
A heat transfer body that connects the front defroster nozzle and the heat source member, and applies heat generated by the heat source member to the air flow;
Instrument panel structure with   The instrument panel structure according to claim 1, wherein the heat transfer body is a heat radiating member that transfers heat by heat conduction.   The instrument according to claim 1, wherein the heat source member is a light source unit that is provided inside the instrument panel main body and forms a part of a head-up display device that projects an image on the front windshield glass. Panel structure.   4. The instrument panel structure according to claim 3, wherein the light source unit is housed in a housing, and the heat transfer body is a hollow communication member that allows communication between the housing and the front defroster nozzle.   The instrument panel structure according to claim 4, wherein a seal member is provided at a connection portion between the communication member and the front defroster nozzle.

Images