KR20180007134A - apparatus for prevention of inflow water in head unit of vehicle - Google Patents

Abstract

The present invention relates to an apparatus to prevent an inflow of moisture introduced from a top side of a head unit of an automobile into the head unit. According to the present invention, a casing of the head unit comprises: a top surface plate which is a top cover for the casing and has an inclined surface on one side and a plurality of heat radiation holes on the other side; a main frame combined with the top surface plate to be assembled/disassembled, and having an accommodation space to mount a circuit apparatus; a rear surface cover combined with the main frame and an edge of a rear surface of the top surface plate, on which a terminal of the circuit apparatus is mounted; and a first fluid guide unit formed in between the inclined surface of the top surface plate and the heat radiation holes to guide moisture in a direction other than a direction towards places with the heat radiation holes.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing inflow of water into an automobile head unit,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for preventing water inflow of an automobile head unit, and more particularly, to an apparatus for preventing inflow of water into an automobile head unit.

2. Description of the Related Art [0002] In general, a car head unit (hereinafter referred to as a " head unit ") is a user-friendly system mounted on a vehicle, and more specifically can refer to an audio system, an audio set, and the like.

The head unit of the prior art includes a front panel having a display device and a button to be operated by a user, and a box-shaped main body having the front panel coupled to the front position. Here, the body of the head unit is composed of a circuit device and a terminal related to audio, video and navigation, and a cover or casing in the form of a box to protect the circuit device while exposing the terminal. For example, the casing is manufactured to be disassembled and assembled by a plurality of plate members. For example, the casing comprises a top cover, a main frame and a back cover. Here, the top cover corresponds to the top plate of the casing. The main frame includes a pair of side plates bent in the vertical direction on both side edges of the bottom plate of the casing. The upper plate of the casing as the top cover and the side plates of the main frame are mutually coupled so as to be disassembled and assembled through bolts.

The upper surface plate of the casing of the prior art head unit has a substantially flat plate member surface shape or has a reinforcing bent portion in terms of structure from the viewpoint of preventing the plate member from being warped by external impact or thermal stress, The edge of the upper plate is bent downward and the function of preventing the penetration of moisture or preventing the flow of water or droplets from flowing into the heat dissipating hole or the heat dissipating hole can not be performed.

Nevertheless, a large number of heat dissipation holes are formed in the upper face plate or the side face plate of the casing of the head unit. Here, the position of the heat dissipation hole can be determined on the basis of the internal power supply device having a relatively high heat generation for maximizing the heat dissipation performance.

On the other hand, the head unit is developed in the form of an AVN (Audio Video Navigation) apparatus that combines audio, video and navigation into one unit.

Inside the vehicle, a ventilation and air conditioning (HVAC) system is installed to create a comfortable driving environment for the passengers. The indoor air outlet and the head unit of the air conditioning system are arranged to be exposed to the center fascia of the vehicle so as to maximize the comfort of the occupant. Inside the center fascia, there are evaporators corresponding to various air ducts of the air conditioning system and the air conditioner internal unit, and the main body of the head unit is also located.

In recent years, the European Union has made it mandatory to install an emergency call (e-call) set-top box in cars sold in the country. As a result, the automotive industry is struggling to find a countermeasure. For example, the price of a vehicle may increase due to the installation of an e-Call set-top box. Of course, companies with their own emergency relief devices and networks must also provide room for the installation of emergency call systems such as e-call set-top boxes in vehicles with relatively limited space requirements, such as Center Fascia.

The main air duct of the air conditioner system extends along the longitudinal direction of the center pacea of the automobile according to the prior art. The exhaust air duct branches off from the main air duct and extends to each room air outlet.

In the prior art, a head unit such as an AVN apparatus is installed in the space between the exhaust air ducts. Also, the e-Call set-top box is provided at an inclination corresponding to the inner space of the center fascia at the upper side of the head unit with respect to the position between the discharge air ducts.

The inside of the center fascia corresponds to the place where moisture is easily condensed due to the heat exchange by the cold heat generated from the inner air duct of the air conditioning system or the cold air of the exhaust air duct.

Therefore, moisture condensed by these air ducts and dripping from the e-Call settop box can be introduced into the interior of the head unit from the top plate side of the head unit through the heat dissipation holes. As a result, the circuit component of the circuit device mounted inside the head unit can generate a circuit failure mode due to a short circuit caused by the introduced moisture.

For example, the vehicle in which the circuit failure mode of the head unit is generated has been inspected thoroughly. As a result of the inspection, moisture generated in the hair duct flows along the e-Call set top box and dropped on the upper surface plate of the casing of the head unit. The heat is radiated to the inside of the head unit through a plurality of heat dissipation holes existing on the top plate of the head unit.

However, in the conventional head unit, there is no structure or means for preventing the moisture introduced into the top of the head unit from flowing into the inside of the head unit, and the possibility of occurrence of a circuit failure mode due to moisture inflow is very large. It is urgently required to develop a product for a head unit which can block the head unit.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a head unit in which a slope is formed on an upper surface plate of a casing of a head unit and a fluid guide portion is formed on an upper plate and a side plate of the casing, And an object of the present invention is to provide an apparatus for preventing water inflow of an automobile head unit which can prevent moisture introduced into an upper portion of a unit from flowing into the inside of the head unit.

According to another aspect of the present invention, there is provided an automobile head unit including a casing for mounting audio, video and navigation circuit devices or audio sets, A top plate having an inclined surface on one side and a plurality of heat dissipating holes on the other side, A main frame detachably assembled to the upper surface plate and having a receiving space for mounting the circuit device; A rear cover coupled to a rear edge of the main frame and the upper surface plate and having terminals of the circuit device; And a first fluid guide portion formed at a position between the inclined surface of the upper surface plate and the heat dissipation hole and guiding a flow of moisture in a direction other than a place where the heat dissipation hole is located.

The casing further includes a second fluid guide portion extending from the side plate of the main frame in the vertical direction of the casing and guiding and discharging moisture collected from the first fluid guide portion downward.

The first fluid guide portion is formed as a rib extending in a straight or bent shape in the width direction of the casing and protruding from the surface of the upper face plate.

The second fluid guide portion is formed of a groove shaped like a groove that enters the surface of the main frame, and both ends of the groove in the vertical direction are opened.

The casing may further include a first groove portion interconnected with the groove at an edge portion of the upper surface of the groove and bent at a position where one end of the rib is located, Both ends in the vertical direction are opened.

The casing further includes a waterproof portion interposed or filled in the boundary between the first groove portion and the groove.

The casing further includes a second groove portion formed on an inclined surface of the upper plate corresponding to the opposite side of the heat dissipating hole with respect to the first fluid guide portion and extending parallel to the first fluid guide portion .

The second groove portion has one end portion of the second groove portion facing the second fluid guide portion opened and the other end portion of the second groove portion corresponding to the opposite side of the second fluid guide portion is closed.

The upper plate of the casing is inclined corresponding to an inclination angle so that moisture or fluid is collected toward the second fluid guide portion.

Wherein the inclination angle is defined by a reference point at which the second fluid guide part and the first fluid guide part come close to each other and a reference point which passes through the reference point and which is parallel to the bottom surface of the main frame, A first inclination angle which is an angle; And a second inclination angle which is an angle between the reference point and the upper plate width direction with respect to the Y axis parallel to the bottom surface of the main frame.

In the apparatus for preventing water inflow of an automotive head unit according to the present invention, an inclined surface and a heat dissipation hole are formed in an upper surface plate of a casing of a head unit, and a first fluid guide portion for guiding the flow of water is provided at a position between the inclined surface and the heat dissipation hole And has formed features. At this time, the shape of the first fluid guide portion is advantageous in that the head unit can be prevented from malfunctioning by guiding the flow of moisture toward the side where there is no heat dissipation hole, instead of blocking the flow of moisture in the direction of the heat dissipation hole.

In the apparatus for preventing water inflow of the automotive head unit according to the present invention, the second fluid guide portion is formed on the side plate of the casing so that the second fluid guide portion corresponds to the lower end position of the first fluid guide portion. By allowing one water to be discharged downward along the second fluid guide portion, the waterproof performance can be maximized.

The apparatus for preventing water inflow of the automotive head unit according to the present invention has an advantage of minimizing occurrence of a circuit failure mode of the head unit due to inflow of water because the waterproof performance of the head unit can be improved.

1 is a perspective view for explaining a casing of a head unit in an apparatus for preventing water inflow of an automotive head unit according to an embodiment of the present invention.
2 is a perspective view of a top plate of the casing shown in Fig.
3 is a right side view of the casing shown in Fig.
Fig. 4 is a rear view of the casing shown in Fig. 1; Fig.
5 is a plan view of the casing shown in Fig.
6 is an enlarged cross-sectional view taken along the line AA shown in Fig. 5; Fig.
7 is a perspective view of a top plate of a casing of an apparatus for preventing water inflow of an automotive head unit according to an application example of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. And is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined by the claims.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. &Quot; comprises " and / or "comprising" when used in this specification is taken to specify the presence or absence of one or more other components, steps, operations and / Or add-ons. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating a casing of a head unit in an apparatus for preventing water inflow of an automotive head unit according to an embodiment of the present invention.

1, the automobile head unit according to the present embodiment includes a product (for example, an AVN (Audio Video Navigation) device) or an audio set or a product, a device, or a set having a circuit device of audio, Similarly, a device that can be mounted on a center fascia of a vehicle, or a device that can be modularly mounted can be collectively referred to.

The automotive head unit of this embodiment includes a casing 100 in the form of an asymmetric hexahedron. In the description of the present embodiment, the water W may mean a small amount of fluid formed by collecting water droplets or water droplets which are separated from the upper side of the casing 100 toward the upper surface plate 110.

The reason why the casing 100 is referred to as an asymmetric hexahedron is that the entire or a part of one of the hexahedrons (e.g., the top plate 110 corresponding to the top cover of the casing 100) (The bottom surface of the main frame 120 of the casing 100) is inclined relative to the reference surface (e.g., the XY plane).

The casing 100 according to the present embodiment may be manufactured by metal sheet metal processing or by disassembling and assembling using a separate injection mold.

The casing 100 includes various circuit devices (e.g., circuit devices related to audio, video, and navigation) to be mounted inside the casing 100, including a top plate 110, a main frame 120, ) (Not shown) or to protect the terminal.

The front portion of the casing 100 is open and may refer to a place where a front panel (not shown) (e.g., a display device, a button, and a bezel) that is electrically connected to the various circuit devices is coupled 1).

The backside portion of the casing 100 may be closed by the back cover 130 assembled with the main frame 120.

The bottom surface and both side surfaces of the casing 100 correspond to the bottom surface and both side surfaces of the main frame 120 and the top surface of the casing 100 is closed by the top plate 110 assembled to the top of the main frame 120.

The top plate 110 refers to the top cover of the casing 100. On one side (left side in FIG. 1) of the top plate 110, an inclined surface 113 is formed.

The inclined face 113 is an upper face of the upper face plate 110 which is inclined downward with respect to the longitudinal direction and the width direction of the casing 100. Since the upper face plate 110 can be changed according to the manufacture of the upper face plate 110, Depending on the change in the discharge direction, the direction of the downward inclination may also be selected, and may not be limited to a specific direction.

A plurality of heat dissipation holes 111 are formed on the other side (right side in FIG. 1) of the upper surface plate 110. The upper surface plate 110 may be manufactured by a machining method such as bending, forming, or bending a metal plate member. The top plate 110 may further have a dish-shaped bolt head seating portion 112 having a bolt hole.

The main frame 120 is a metal plate member having a U-shaped cross section, and is also manufactured by the above machining method. A plurality of bolt machining portions 122 are formed on each side plate 121 of the main frame 120.

Each of the side plates 121 is formed with a protrusion 123 protruding from the surface of the side plate 121 with respect to the position of the side plate 121 which does not overlap with the bolt processing portion 122. Here, the protrusion 123 may be formed at one or more portions of the side plate 121, or may be separately formed and then coupled to the side plate 121. The protrusion 123 may minimize frictional force when the casing 100 is installed in the vehicle Role or maintaining the gap with the installation surface or maintaining the gap.

The main frame 120 is detachably assembled to the top plate 110. The main frame 120 has a receiving space for mounting the circuit device.

The back cover 130 may be made of a metal material or a plastic material. The back cover 130 is coupled to the back edge of the main frame 120 and the top plate 110. This back cover 130 means a place where a terminal (e.g., a socket or a terminal, etc.) of the circuit device is installed.

The first fluid guide part 200 may be formed integrally with the top plate 110 or separately attached to the top plate 110 and then attached or coupled to the top plate 110.

The first fluid guide portion 200 is formed at a position between the inclined surface 113 of the upper surface plate 110 and the heat dissipating hole 111. The first fluid guide part 200 is a protruding jaw or a rib-like structure, and serves as a barrier for preventing the flow of the water W. For example, the first fluid guide portion 200 may have a predetermined height (for example, a height in the vertical direction with respect to the inclined surface 113 of the top plate 110) Height that can not exceed this ride).

The first fluid guiding part 200 guides or directs the water W toward the discharging direction (for example, the direction in which the second fluid guiding part 300 is positioned) even if the flow of the water W is directed toward the heat dissipating hole 111. [ It is the role of That is, the first fluid guide part 200 can guide the flow of moisture in a direction other than the place where the heat dissipation hole 111 is located.

For example, there is a case where a power source device (not shown) mounted on the casing 100 and relatively large in heat radiation compared to other portions is located in the inner space on the back side of the casing 100. In this case, the heat dissipating holes 111 are formed in the thickness direction of the top plate 110 with reference to a side closer to the back cover 130, and are spaced from each other along the width direction (Y axis direction) of the top plate 110 And may be arranged and formed in a plurality of numbers while maintaining the spacing.

When the heat dissipating holes 111 are arranged in this manner, the first fluid guiding part 200 is extended along the Y axis direction which is the width direction of the casing 100 or the upper surface plate 110, .

The first fluid guide part 200 extends from the upper surface plate 110 toward the rim 114 of the upper surface plate 110 and then is inserted into the bolt head seating part 112 And then extend toward the rim 114 again.

Since the bottom of the rim portion 114 is not tilted as the inclined surface 113 of the top plate 110 but is formed to be parallel to the engagement position of the main frame 120, (120) may be airtightly interlocked.

In addition, the casing 100 further includes a second fluid guide portion 300. The second fluid guide part 300 is formed to extend in the vertical direction (Z-axis direction) of the casing 100 in the side plate 121 of the main frame 120, And guiding and discharging one moisture (W) downward. That is, the slope or slope of the inclined surface 113 and the flow of the water W guided or collected by the first fluid guide portion 200 can not flow toward the heat dissipating hole 111, And can be discharged downward along the portion 300.

FIG. 2 is a perspective view of a top plate of the casing shown in FIG. 1, and FIG. 3 is a right side view of the casing shown in FIG. 1; 4 is a rear view of the casing shown in Fig.

2 to 4, in the casing 100, the top plate 110 is inclined corresponding to the inclination angles? 1 and? 2 so as to collect moisture or fluid toward the second fluid guide part 300.

That is, the inclination angles? 1 and? 2 can be inclined in the diagonal direction of the upper surface plate 110 of the casing 100 with respect to the X-Y plane.

The inclination angles? 1 and? 2 are set such that the inclination angles? 1 and? 2 refer to a reference point G where the second fluid guide part 300 and the first fluid guide part 200 approach each other, 1 parallel to the bottom surface of the main frame 130 and a first inclination angle? 1 that is an angle formed between the reference plane G and the top plate longitudinal direction on the basis of the X axis parallel to the bottom surface of the main frame 130, 2 that is an angle with the direction of the width of the upper surface plate. Here, the reference point G may be located at any one of the upper corners of the top plate 110 through design modification. In this case, since various shapes of the slopes 113 may be formed, The point G may not be limited to a specific point.

3, since the front portion of the top plate 110 of the casing 100 is higher than the rear portion and the one side portion of the top plate 110 of the casing 100 is higher than the other side portion on the basis of Fig. 4, The water W flows into the upper plate 110 and then flows along the inclined surface 113 of the upper plate 110 and the first fluid guide 200, (300). ≪ / RTI > Since the moisture W is obstructed by the first fluid guide part 200 and does not flow into the heat dissipation hole 111 of the upper surface plate 110, It is possible to effectively prevent a circuit failure mode from occurring due to a short circuit component caused by water (W).

For example, the first fluid guide part 200 may extend in the width direction (Y axis direction) of the casing 100 linearly or in a bent manner and may extend upward (Z axis direction) from the surface of the upper surface plate 110 And may be formed as ribs of protruding shapes.

The second fluid guide part 300 is formed in a groove shaped like a groove that penetrates the surface of the main frame 120. Both ends of the groove in the vertical direction are opened. Therefore, the moisture reaching the end of the first fluid guide part 200 can flow downward smoothly through the groove that is the second fluid guide part 300.

Particularly, the casing 100 further includes a first groove portion 115 which is a moisture flow passage extending in the vertical direction. The first groove part 115 has the same width and depth as the groove of the second fluid guide part 300.

2, one end of the rib as the first fluid guiding part 200 extends to the position of the one side edge 114, but the other end of the rib has an arrangement of the heat releasing holes 111 And may not extend to the other side edge portion 114a.

The first groove part 115 is bent downward from the upper plate 110 with respect to the upper part of the groove as the second fluid guide part 300 and the one end of the rib as the first fluid guide part 200, Extends in the vertical direction (Z-axis direction) at the rim portion 114, and is interconnected with the groove. At this time, since the both end portions in the vertical direction in the first groove portion 115 are opened, the flow of water W or fluid can be continuously performed along the vertical direction.

In order to prevent the water W from flowing into the casing 100 along the interface or gap between the first groove 115 and the second fluid guide 300 as a groove during the flow of the water W, The casing 100 may further include a waterproof part 400.

That is, the waterproof portion 400 may be any one of a painted synthetic resin, an adhesive, a waterproofing agent, a waterproof coating agent, a sealant, or a sealing member. The waterproof portion 400 may be formed on the boundary between the first groove portion 115 and the groove, It can be interposed or filled to eliminate the gap. Since the waterproof portion 400 is further provided, the present embodiment can further enhance the water inflow preventing performance. In order to maximize the waterproof performance, if necessary, the waterproof part 400 may be formed not only on the side of the second fluid guide part 300, but also on the boundary of the whole of the front surface plate 110 and the main frame 120, As shown in FIG.

A plurality of vertical heat dissipation holes 131 and a spacing retention rear protrusion 132 may be formed in the back cover 130 as well.

In addition, since moisture is discharged downward along the second fluid guide portion 300, the moisture can be prevented from permeating toward the terminal 600 of the rear cover 130 shown in FIG.

Fig. 5 is a plan view of the casing shown in Fig. 1, and Fig. 6 is an enlarged sectional view taken along the line A-A shown in Fig.

5 and 6, the heat dissipation holes 111 may also be arranged obliquely on the same principle as the second inclination angle [theta] 2 described above.

Each of the heat dissipation holes 111 is formed by cutting a portion of the upper surface plate 110 for forming the heat dissipation holes 111 in the shape of a letter "D" when the hole is formed by the sheet metal processing, And is formed by folding the end portion 111a in the vertical direction and then folding it again in the horizontal direction. A gap, that is, a heat dissipation hole 111, is formed between the end of the free end 111a and the cut edge of the upper plate 110.

The heat dissipating holes 111 may radiate the heat inside the casing 100 to the outside but water droplets falling toward the upper plate 111 in the vertical direction at the upward position of the casing 100 may be discharged to the free end 111a to be prevented from flowing directly into the holes of the heat dissipating holes 111, thereby maximizing the heat dissipating performance and waterproofing performance.

Particularly, the heat dissipation holes 111 may also be arranged obliquely on the same principle as the second inclination angle [theta] 2 described above. Therefore, the opening direction Q of the heat dissipating hole 111 is also inclined at an angle of the second inclination angle? 2 with respect to the vertical direction (a direction in which water drops such as moisture W or a Z-axis direction) (W: water droplets) can be relatively increased as compared with holes having no second inclination angle [theta] 2.

7 is a perspective view of a top plate of a casing of an apparatus for preventing moisture inflow of an automotive head unit according to an application example of the present invention.

Referring to FIG. 7, the casing 100a according to the embodiment of the present invention is mounted on the inclined surface 113 of the upper plate 110a opposite to the side where the heat dissipating hole 111 is located with respect to the first fluid guide portion 100 And a second groove 500 extending parallel to the first fluid guide 200. And the second groove portion 500 may denote a water flow passage elongated like a groove. Since the second groove portion 500 also has a gradient corresponding to the inclination angles? 1 and? 2 of the upper face plate 110a, it is possible to efficiently guide moisture to flow toward the first groove portion 115.

In this second groove part 500, one end 510 of the second groove part 500 facing the second fluid guide part 300 of FIG. 1 described above is opened. On the other hand, the other end 520 of the second groove 500, which is opposite to the second fluid guide 300, is closed. The water or water droplet that flows along the inclined surface 113 and reaches the second groove portion 500 flows only toward one end 510 of the uncovered second groove portion 500 and then flows into the upper plate 110a Through the first groove portion 115 of the rim portion 114 of the base portion 114.

That is, the flow of water is guided primarily by the second groove portion 500 and secondarily guided by the first fluid guide portion 200, so that further water is not introduced into the heat dissipating hole 111 So that the waterproof performance of the present invention according to the application example can be further maximized.

In the above description, the first fluid guide portion, the second fluid guide portion, and the like may be designed or modified such that the moisture does not flow or enter the heat dissipation hole in various forms such as ribs or grooves, or combinations thereof.

The foregoing description is merely illustrative of the technical idea of the present invention and various changes and modifications may be made without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the scope of the present invention, but are intended to be illustrative, and the scope of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas which are equivalent or equivalent thereto should be interpreted as being included in the scope of the present invention.

100, 100a: casing 110, 110a: upper plate
111: heat dissipation hole 112: bolt head seating portion
113: sloped surface 114, 114a:
115: first groove portion 120: main frame
130: back cover 200: first fluid guide portion
300: second fluid guide part 400: waterproof part
500: second groove portion 600: terminal

Claims (10)

An automotive head unit comprising a casing for mounting audio, video and navigational circuitry or audio sets,
The casing includes:
A top plate having an inclined surface on one side and a plurality of heat dissipating holes on the other side,
A main frame detachably assembled to the upper surface plate and having a receiving space for mounting the circuit device;
A rear cover coupled to a rear edge of the main frame and the upper surface plate and having terminals of the circuit device; And
And a first fluid guide portion formed at a position between the inclined surface of the upper surface plate and the heat dissipating hole and guiding a flow of moisture in a direction excluding a place where the heat dissipating hole is located
Which prevents the inflow of water into the automobile head unit.
The method according to claim 1,
The casing includes:
And a second fluid guiding part formed to extend in the vertical direction of the casing on the side plate of the main frame and guiding and discharging the moisture collected from the first fluid guiding part downward
Which prevents the inflow of water into the automobile head unit.
3. The method of claim 2,
Wherein the first fluid guide portion comprises:
A rib extending in a straight or bent shape in the width direction of the casing and protruding from the surface of the upper plate;
Which prevents the inflow of water into the automobile head unit.
The method of claim 3,
Wherein the second fluid guide portion comprises:
A groove formed in the groove of the main frame,
And both end portions in the vertical direction in the groove are open
Which prevents the inflow of water into the automobile head unit.
5. The method of claim 4,
The casing includes:
Further comprising a first groove portion interconnected with the groove at a rim bent downward from the top plate with respect to an upper portion of the groove and a first end of the rib,
And both end portions in the vertical direction in the first groove portion are open
Which prevents the inflow of water into the automobile head unit.
6. The method of claim 5,
The casing includes:
And a waterproof portion interposed or filled in the boundary between the first groove portion and the groove
Which prevents the inflow of water into the automobile head unit.
3. The method of claim 2,
The casing includes:
And a second groove portion formed on an inclined surface of the upper plate corresponding to the opposite side of the position of the heat dissipating hole with respect to the first fluid guide portion and extending parallel to the first fluid guide portion
Which prevents the inflow of water into the automobile head unit.
8. The method of claim 7,
The second groove portion
One end of the second groove portion facing the second fluid guide portion is opened,
And the other end portion of the second groove portion corresponding to the opposite side of the second fluid guide portion is closed
Which prevents the inflow of water into the automobile head unit.
3. The method of claim 2,
In the casing,
And is inclined corresponding to the inclination angle so as to collect moisture or fluid toward the second fluid guide portion
Which prevents the inflow of water into the automobile head unit.
10. The method of claim 9,
The inclination angle,
Wherein the second fluid guide portion and the first fluid guide portion are referenced to a reference point at which the second fluid guide portion and the first fluid guide portion are close to each other,
A first inclination angle which is an angle formed between the reference point and the longitudinal direction of the top plate relative to the X axis parallel to the bottom surface of the main frame; And
And a second inclination angle which is an angle formed between the reference point and the upper plate width direction with respect to the Y axis parallel to the bottom surface of the main frame
Which prevents the inflow of water into the automobile head unit.

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