Information
-
Patent Grant
-
6648399
-
Patent Number
6,648,399
-
Date Filed
Monday, July 9, 200123 years ago
-
Date Issued
Tuesday, November 18, 200320 years ago
-
Inventors
-
Original Assignees
-
Examiners
- Dayoan; D. Glenn
- Morrow; Jason
Agents
- Harness, Dickey & Pierce, PLC
-
CPC
-
US Classifications
Field of Search
US
- 296 191
- 296 194
- 296 20302
- 296 208
- 293 115
- 361 678
- 361 690
- 361 707
- 307 101
-
International Classifications
-
Abstract
The radiating section (830) of the control unit (800) is exposed to air flowing in the intake path (710) formed in the panel body (450). Due to the foregoing, it is possible to cool the control unit (800) by air (about 35° C.), the temperature of which is lower than the temperature of air (about 60° C.) which has passed through the condenser (200) and the radiator (100). Accordingly, the cooling effect (cooling capacity) can be enhanced. Therefore, the size of the radiating section (830) can be reduced, and the structure of the control unit (800) (the mounting structure of the electronic parts (810)) can be simplified. As a result, the manufacturing cost of the control unit (800) can be reduced.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is based upon and claims priority from Japanese Patent Application No. 11-320186, filed Nov. 10, 1999, the contents being incorporated therein by reference, and is a continuation of PCT/JP00/07972, filed Nov. 10, 2000.
TECHNICAL FIELD
The present invention relates to a front end panel to which front end parts of a vehicle, including at least a radiator, which are arranged on the front end of an engine compartment (in a vehicle), are incorporated.
BACKGROUND ART
A control unit, for controlling electric equipment such as an electric fan used for a radiator and a headlight, is usually arranged in an engine compartment. Therefore, the control unit is exposed to air at a high temperatures which has passed through the radiator. Accordingly, it is difficult to cool the control unit sufficiently. In order to solve the above problems, it is common to arrange, as a countermeasure, that the size of a radiating section of the control unit is increased or the profile of the control unit is made complicated.
However, when the above countermeasure is taken, since the size of the radiating section of the control unit is increased or the profile of the control unit is made complicated, it becomes difficult to reduce the manufacturing cost of the control unit.
DISCLOSURE OF THE INVENTION
The present invention is intended to solve the above problems. It is an object of the present invention to reduce the manufacturing cost of the control unit.
In order to accomplish the above object, the present invention provides a front end panel onto which vehicle front end parts (
123
), including at least a radiator (
100
), which are arranged on the vehicle front end side, are incorporated, comprising: an air path (
710
) for providing an air flow to the rear end side of the vehicle while the air makes a detour round the radiator.(
100
), the air path being arranged in a panel body section (
450
) to which the vehicle front end parts (
123
) are attached; and a unit attaching section (
412
) to which a control unit (
800
) for controlling electric equipment is attached, the unit attaching section (
412
) being arranged in the panel body section (
450
), wherein the control unit (
800
) is cooled by the air flowing in the air path (
710
).
Due to the foregoing, the control unit (
800
) can be cooled by the air, the temperature of which is lower than the air at a high temperature which has passed through the radiator (
100
). Therefore, the cooling effect (cooling capacity) can be enhanced. Accordingly, the structure of the control unit (
800
) can be simplified, and the manufacturing cost of the control unit (
800
) can be reduced.
In another embodiment of the present invention, there is provided a front end panel in which the panel body section (
450
) is made of resin, the control unit (
800
) is composed of a mounting board (
820
) for mounting electronic parts (
810
), a casing (
860
) for accommodating the mounting board (
820
) and a radiating section (
830
) made of metal for radiating heat generated in a casing (
860
), and the radiating section (
830
) comes into contact with a portion of the panel body (
450
) so that a labyrinth structure (
850
) is formed and the air path (
710
) side of the casing (
860
) is closed.
Due to the foregoing, it is possible to prevent water such as rain water, which has entered into the air path (
710
), from proceeding into the casing (
860
). Therefore, it is possible to prevent the mounting board (
820
) from being covered with water.
The present invention will be more fully explained in the detailed description of the preferred embodiment of the present invention with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
is an exploded perspective view showing a front end section of a vehicle into which a front end panel of the first embodiment of the present invention is incorporated.
FIG. 2
is a perspective view showing a front end panel of the first embodiment of the present invention.
FIG. 3
is an exploded enlarged view of a unit attaching section of the first embodiment of the present invention.
FIG. 4
is a front view of a radiating section of the first embodiment of the present invention.
FIG. 5
is a perspective view showing an appearance of a front end section of a vehicle into which a front end panel of the second embodiment of the present invention is incorporated.
FIG. 6
is a cross-sectional view, taken on line A—A in
FIG. 7
, of a radiating section of the second embodiment of the present invention.
FIG. 7
is a cross-sectional view, taken on line B—B in
FIG. 7
, of a radiating section of the second embodiment of the present invention.
FIG. 8
is an exploded perspective view showing a front end section of a vehicle into which a front end panel of the third embodiment of the present invention is incorporated.
PREFERRED EMBODIMENTS FOR CARRYING OUT THE INVENTION
(First Embodiment)
In this embodiment, the vehicle front end parts, which are mounted on the vehicle front end section, include: a radiator for cooling a coolant of a vehicle engine (internal combustion engine); a condenser of a refrigerating cycle for vehicle use (air-conditioner); and a fan unit for sending cooling air to the radiator and condenser.
FIG. 1
is an exploded perspective view of the front end structure of this embodiment.
In
FIG. 1
, reference numeral
100
is a radiator, reference numeral
200
is a condenser, and reference numeral
300
is a fan unit. In this connection, the radiator
100
, condenser
200
and fan unit
300
are hereinafter generally called vehicle front end parts
123
.
In this connection, the radiator
100
is a well known multi-flow type heat exchanger including: a radiator core
110
composed of a plurality of radiator tubes
111
in which coolant flows; and radiator tanks
120
arranged on both end sides of the radiator tubes
111
in the longitudinal direction, the radiator tanks
120
communicating with the radiator tubes
111
.
The condenser
200
is a well known multi-flow type heat exchanger, which is composed in the same manner as that of the radiator
200
, including: a condenser core
210
composed of a plurality of condenser tubes
211
in which refrigerant flows; and condenser tanks
220
arranged on both end sides of the condenser tubes
211
in the longitudinal direction, the condenser tanks
220
communicating with the condenser tubes
211
. In this connection, in this embodiment, both the heat exchangers
100
,
200
are arranged in a vehicle in such a manner that the tubes
111
,
211
are extended in the horizontal direction and the tanks
120
,
220
are extended in the vertical direction (perpendicular direction).
Reference numeral
400
is a front end panel (referred to as a panel hereinafter) made of resin to which vehicle front end parts
123
are incorporated and fixed. As shown in
FIG. 2
, this panel
400
includes: an upper beam member
410
located on the upper side and extended in the horizontal direction; a lower beam member
420
located on the lower side and extended in the horizontal direction; and pillar sections
431
,
432
extended in the vertical direction and connected with both the beam members
410
,
420
. The rectangular frame including both the beam members
410
,
420
and the first
431
and the second pillar section
432
, and the bracket section
440
compose the panel body section
450
.
In this connection, the cross sections of both the beam members
410
,
420
and the first pillar section
431
and the second pillar section
432
have a substantially C-shape which is open to the rear side of the vehicle. Inside these members
410
,
420
,
431
,
432
, there are integrally provided a plurality of rib walls (not shown) for enhancing the torsional rigidity of both the beam members
410
,
420
and the first pillar section
431
and the second pillar section
432
in such a manner that these rib walls partition the substantially C-shaped groove into a plurality of spaces.
As shown in
FIG. 3
, the opening side of the upper beam member
410
is connected with the intake duct
700
made of resin for guiding air (intake air) onto the intake side (to the intake manifold) of a vehicle running internal combustion engine (not shown) which is arranged on the rear side of the vehicle with respect to the upper beam member
410
. On the other hand, as shown in
FIGS. 1
to
3
, the outside air introducing port
411
for introducing outside air from the front side of the vehicle into the intake duct
700
is formed in the upper beam member
410
on the front side of the vehicle.
Therefore, as shown in
FIG. 3
, intake air to be sucked into the internal combustion engine is taken, from the outside of the engine compartment into which the internal combustion engine is incorporated, into the intake duct
700
and guided onto the intake side of the internal combustion engine which is located on the rear side of the vehicle with respect to the panel
400
while the intake air makes a detour round the condenser
200
and the radiator
100
. For the above reason, the air path from the outside air introducing port
411
to the intake duct
700
via the inside of the upper beam member
410
(panel body section
450
) will be referred to as an intake path
710
, hereinafter.
In the upper portion of the upper beam member
410
(panel body
450
), there is provided a unit attaching section
412
to attach a control unit
800
for controlling electric equipment mounted in the front section of the vehicle such as a fan unit (electric fan)
300
, headlights (not shown), turn signals and horn.
In the unit attaching section
412
, the radiating section
830
made of metal (aluminum in this embodiment), which will be described later, is integrated with the panel body section
450
by means of insert molding simultaneously when the panel body section
450
is molded, so that the radiating section
830
can be exposed to air flowing in the intake path
710
.
In this connection, the control unit
800
includes: electronic parts
810
composed of semiconductor elements such as an integrated circuit (IC) and others; a mounting board
820
on which the electronic parts
810
are mounted; and a radiating section
830
(shown in
FIG. 4
) for radiating heat generated from the electronic parts
810
.
In this connection, the control unit
800
(electronic parts
810
and mounting board
820
) is attached to the panel body
450
(upper beam member
410
) and water-tightly covered with the cover
840
. In this connection, there is provided a seal member such as packing or liquid packing in the gap formed between the cover
840
, which is attached to the panel body
450
by a fastening means such as a screws, and the panel body
450
(upper beam member
410
).
Reference numeral
500
is a bumper reinforcement (referred to as a bumper hereinafter) made of metal which forms a buffer member on the front side of a vehicle. Reference numeral
510
is a bumper cover made of resin which covers the bumper
500
. The bumper
500
and panel
400
are fixed to the side body (side member)
600
of the vehicle with a fastening means such as bolts. The vehicle front end parts
123
are incorporated onto the panel
400
in such a manner that the condenser
200
and the fan unit
300
are attached to the radiator
100
by a fastening means such as bolts so that they can be formed into one unit.
Next, the characteristic of this embodiment will be described below.
According to this embodiment, the radiating section
830
is composed so that it can be exposed to air flowing in the intake path
710
. Therefore, it is possible to cool the control unit
800
with air, the temperature (about 35° C.) of which is lower than the temperature (about 60° C.) produced when the air passes through the condenser
200
and the radiator
100
. Accordingly, the cooling effect (cooling capacity) can be enhanced. Therefore, the size of the radiating section
830
can be reduced, and the structure of the control unit
800
(the mounting structure of the electronic parts
810
) can be simplified. As a result, the manufacturing cost of the control unit
800
can be reduced.
(Second Embodiment)
FIG. 5
is a perspective view showing an appearance of this embodiment.
FIGS. 6 and 7
are cross-sectional views showing the characteristic of this embodiment.
As shown in
FIGS. 6 and 7
, a portion of the radiating section (heat sink and radiating fins)
830
and a portion of the panel body
450
are made to come into contact with each other so as to compose a labyrinth structure
850
, and the intake path side
710
of the casing
860
made of resin, in which the mounting board
820
is accommodated, is closed by the radiating section
830
so that the mounting board
820
side and the intake path
710
can be partitioned by the radiating section
830
.
In this case, the radiating section
830
is arranged in a lower portion of the casing
860
, and the mounting board
820
is arranged on an upper side of the casing
860
while a predetermined interval is formed between the mounting board
820
and the radiating section
830
. At the same time, the mounting board
820
is arranged in the casing
860
so that the side of the mounting board
820
on which the wiring pattern (not shown) is provided does not directly face the radiating section
830
, that is, the side of the mounting board
820
on which the wiring pattern is provided, can be arranged on the reverse side. In other words, the mounting board
820
is arranged in the casing
860
so that the side of the mounting board
820
opposite to the side on which the electronic parts
810
are mounted, that is, the side of the mounting board on which soldering is done, does not directly face the radiating section
830
.
In this second embodiment, in the panel body
450
, there is provided a protruding section
851
which comes partially into contact with the radiating section
830
. In the radiating section
830
, there is provided a protruding section
852
which protrudes onto the panel body
450
side. In this way, the labyrinth structure (mechanical seal section)
850
is composed.
Due to the foregoing, it is possible to prevent water such as rain water, which has entered into the intake path
710
, from proceeding into the casing
860
. Therefore, it is possible to prevent the mounting board (
820
) from being covered with water.
In this connection, although rain water is prevented from proceeding into the casing
860
by means of the labyrinth structure (mechanical seal section)
850
, when high pressure acts on the intake path
710
, for example, when the vehicle is running at high speed, there is a possibility that invasion of rain water cannot be sufficiently prevented.
In this second embodiment, the radiating section
830
is arranged in the lower portion of the casing
860
, and the mounting board
820
is arranged on the upper side of the casing
860
while a predetermined interval is provided between the mounting board
820
and the radiating section
830
. Due to the above structure, even if rain water passes through the labyrinth structure (mechanical seal section)
850
and proceeds into the casing
860
, it is possible to prevent the mounting board
820
from being covered with water.
Further, the mounting board
820
is arranged in the casing
860
so that the side of the mounting board
820
, on which the wiring pattern is provided, does not directly face the radiating section
830
, that is, the mounting board
820
is arranged in the casing
860
so that the side of the mounting board
820
, on which the wiring pattern is provided, can be located on the reverse side. Accordingly, it is possible to prevent the occurrence of damage caused by electric leakage even if the device is covered with water.
(Third Embodiment)
As shown in
FIG. 8
, the third embodiment, is composed in such a manner that the panel body
450
is made of metal (aluminum in this embodiment) and the radiating section
830
is composed integrally with the panel body
450
.
Due to the foregoing, the number of parts can be reduced. Therefore, the manufacturing cost of the control unit
800
and the panel body
450
can be reduced. Since the panel body
450
is made of metal, it is possible to radiate heat from the entire panel body
450
, and further the rigidity of the panel body
450
can be enhanced.
(Another Embodiment)
In the first embodiment, the radiating section
830
and the panel body section
450
are integrated with each other by means of insert molding, however, it should be noted that the present invention is not limited to the above specific embodiment. Sections
830
,
450
may be made separately from each other.
In the above embodiment, the control unit
800
is cooled by exposing the radiating section
830
to the intake path
710
. However, the entire control unit
800
may be arranged in the intake path
710
in the panel body section
450
.
Air flowing in the intake path
710
may be introduced into the control unit
800
, and the electronic parts
810
may be directly cooled.
The radiating section
830
need not be composed of a different member but a portion of the panel body may be directly exposed to cold air instead of the radiating section
830
.
In this connection, the specific embodiments of the present invention are explained in detail in this specification. However, it should be noted that variations may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims
- 1. A front end panel for a vehicle having a front end onto which vehicle front end parts including at least a radiator are incorporated, the front end panel comprising:an air path adapted to be in communication with air located outside of an engine compartment of the vehicle, the air path allowing air to flow to the rear end of the vehicle while bypassing the radiator, the air path being arranged in a panel body section to which the vehicle front end parts are attached; and a unit attaching section to which a control unit for controlling electric equipment is attached, the unit attaching section being arranged in the panel body section, wherein the control unit is cooled by the air flowing in the air path without having flowed through the engine compartment.
- 2. A front end panel onto which vehicle front end parts including at least a radiator, which are arranged on the vehicle front end, are incorporated, comprising:an air path adapted for guiding air into the intake of an internal combustion engine, the air path being arranged in a panel body section to which the vehicle front end parts are attached; and a unit attaching section to which a control unit for controlling electric equipment is attached, the unit attaching section being arranged in the panel body section, wherein the control unit is cooled by the air flowing in the air path.
- 3. A front end panel according to claim 1, the control unit including: a mounting board for mounting electronic parts; and a radiating section for radiating heat generated by the electronic parts, wherein the radiating section is exposed to the air flowing in the air path.
- 4. A front end panel according to claim 2, the control unit including: a mounting board for mounting electronic parts; and a radiating section for radiating heat generated by the electronic parts, wherein the radiating section is exposed to the air flowing in the air path.
- 5. A front end panel according to claim 3, wherein the panel body section is made of resin, the radiating section is made of metal, and the radiating section is integrated with the panel body section.
- 6. A front end panel according to claim 3, wherein the panel body section is made of metal, and the radiating section is integrated with the panel body section.
- 7. A front end panel according to claim 1, wherein the panel body section is made of resin,the control unit is composed of a mounting board for mounting electronic parts, a casing for accommodating the mounting board and a radiating section made of metal for radiating heat generated in a casing, and the radiating section comes into contact with a portion of the panel body so that a labyrinth structure is formed and the air path side of the casing is closed.
- 8. A front end panel according to claim 2, wherein the panel body section is made of resin,the control unit is composed of a mounting board for mounting electronic parts, a casing for accommodating the mounting board and a radiating section made of metal for radiating heat generated in a casing, and the radiating section comes into contact with a portion of the panel body so that a labyrinth structure is formed and the air path side of the casing is closed.
- 9. A front end panel according to claim 7, wherein the radiating section is located at a lower portion in the casing so that it can be exposed to air flowing in the air path, andthe mounting board is arranged on the upper side of the casing while a predetermined interval is kept between the mounting board and the radiating section.
- 10. A front end panel onto which vehicle front end parts, including at least a radiator, which are arranged on the front end of an engine compartment, are incorporated, comprising:a unit attaching section to which a control unit for controlling electric equipment is attached, the unit attaching section being arranged in the panel body section to which the vehicle front end parts are attached, wherein air is taken in from outside the engine compartment to bypass the radiator and the control unit is cooled by the air which has been taken in without the air having flowed through the engine compartment.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-320186 |
Nov 1999 |
JP |
|
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A |
5348114 |
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Sep 1994 |
A |
6273181 |
Matsui et al. |
Aug 2001 |
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EP |
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FR |
61-141165 |
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JP |
A-7-112616 |
May 1995 |
JP |
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Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/JP00/07972 |
Nov 2000 |
US |
Child |
09/901532 |
|
US |