JPH09290625A - Ceiling cooler unit for vehicles - Google Patents

Abstract

(57) Abstract: In a vehicle ceiling-mounted cooler unit, it is possible to effectively suppress the occurrence of water leakage due to a sudden rise in the level of drain water during a sharp turn of the vehicle. Attention is paid to the existence of first and second drainage channels 15a and 15b extending parallel to the longitudinal direction of the case (horizontal direction of the vehicle), and at both left and right ends of the first and second drainage channels 15a and 15b, Rib 1 in the center that separates both drainage channels 15a and 15b
The heights of 50 and 151 are set lower than the heights of the outer ribs 152 to 155 which are the outer bank of the drainage channels 15a and 15b. As a result, the drain water gathered at both ends of the first drainage channel 15a during a sharp turn will pass over the ribs 150, 151 at the central portion having a low height, flow into the second drainage channel 15b and be discharged. Thereby, it is possible to reliably prevent the drain water from leaking out of the case.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle ceiling-mounted cooler unit, and more particularly to a drainage channel structure provided with measures against leakage of drain water (condensed water) when the vehicle turns.

[0002]

2. Description of the Related Art Conventionally, in a wagon type vehicle or the like, in order to cool the rear seat side of the passenger compartment, a cooler unit is mounted on the vehicle ceiling in the vehicle left-right direction (vehicle width direction).
The cooler unit is installed so as to extend to, and cool air is blown from the ceiling-mounted cooler unit toward the rear side of the vehicle.

In this cooler unit, in order to discharge drain water (condensed water) generated by the cooling and dehumidifying action of the evaporator, a drain passage extending in the longitudinal direction (the vehicle left-right direction) is formed in the bottom surface of the unit case. In addition, drain ports for discharging the drain water from the drainage channel are arranged on the lower surface sides of the left and right end portions of the unit case. And
A drain hose is connected to this drain port, and this drain hose is piped to a position below the vehicle. As a result, the drain water is guided from the drain port to the vehicle lower position by the drain hose and discharged outside the vehicle.

Further, in Japanese Unexamined Patent Publication No. 4-108027, the unit case is curved so that the central part in the vehicle left-right direction is high and the left and right ends are low, and the drain water drain ports are provided at the lowered left and right ends. It has been proposed that the drain water be drained out of the case through this drainage port to improve the drainability of the drain water.

[0005]

By the way, when the vehicle makes a sharp turn, a large centrifugal force acts on the drain water existing in the drainage channel on the bottom of the unit case, and the drain water is suddenly applied to the left and right ends of the unit case. The phenomenon of transition to occurs. However, in the prior art, since no particular consideration is given to the abrupt transition of the drain water during a sharp turn of the vehicle, the drain water abruptly transitions to the left and right end portions of the unit case during a sudden turn of the vehicle, The water surfaces of the drain water at the left and right ends of the unit case temporarily rise rapidly, and as a result, water leakage may occur from the mating surfaces of the upper and lower unit cases.

[0006] The present invention has been made in view of the above points,
(EN) In a vehicle ceiling-mounted cooler unit, it is an object of the present invention to effectively suppress the occurrence of water leakage due to a sudden rise in the level of drain water when the vehicle makes a sharp turn.

[0007]

In order to achieve the above object, the present invention employs the following technical means. Claims 1-6
In the described invention, the first extending parallel to the longitudinal direction of the case,
In the vehicle ceiling-mounted cooler unit having the second drainage channels (15a, 15b), paying attention to the existence of the first and second drainage channels (15a, 15b), the rib serving as a bank of the drainage channel. About the height of (150-155),
By making the following settings, the above object is effectively achieved.

That is, when the vehicle makes a sharp turn, the centrifugal force caused by the sharp turn acts on the drain water, and the drain water abruptly moves to both longitudinal ends of the first and second drainage channels (15a, 15b). However, drain water concentrates on both ends and the water level rises. Therefore, paying attention to this point, at both ends of the first and second drainage channels (15a, 15b), the ribs (150, 1, 1) at the central portion for partitioning the drainage channels (15a, 15b) are separated.
The height of 51) is set lower than the height of the outer ribs (152-155) which are the outer bank of both drainage channels (15a, 15b).

With this structure, the drain water collected at both ends of the first and second drainage channels (15a, 15b) at the time of a sudden turn has a rib (150,
It is possible to pass through 151) and flow from one drainage channel to the other drainage channel side, and it is possible to reliably prevent drain water from leaking to the outside of the case. Further, in the invention according to claim 2, the width (W1) of the first drainage channel (15a) is made narrower than the width (W2) of the second drainage channel (15b) to cool the first drainage channel (15a). The blower (13) is arranged above the second drainage channel (15b) while arranging the lower end portion of the device (12).
The air flow path of the unit case (10), the suction port (11), the cooler (12), the blower (1
3) and the outlet (14) in that order.

Therefore, according to the second aspect of the invention, the drain water mainly drops from the lower end of the cooler (12) toward the first drainage channel (15a), and at the same time, the first drainage channel (15a).
Has a narrower width (flow passage cross-sectional area) than the second drainage channel (15b), and therefore the water level rise at both ends of the first drainage channel (15a) is much larger during a sharp turn. Become.

Therefore, the first drainage channel (15
The drain water collected at both ends of (a) gets over the ribs (150, 151) in the central portion having a low height, flows into the second drainage channel (15b) side, and is discharged. Therefore, it is possible to reliably prevent the drain water from leaking outside the case. Moreover, during normal traveling, the second drainage channel (15b), in which the blower (13) is arranged above, has a small inflow of drain water and is wide, so that the water level of the drain water can be kept low. By the operation of the blower (13), it is possible to prevent the drain water on the second drainage channel (15b) side from splashing into the vehicle interior.

In the invention according to claim 5, the unit case (10) is divided into an upper case (10a) and a lower case (10b) made of resin, and the lower case (10b) has first and second parts. Drainage channels (15a, 15b), drainage ports (17-
20), the central ribs (150, 151) and the outer ribs (152-155) are integrally molded, so that the ribs and the like can be easily molded into a required shape by utilizing the good moldability of the resin. Further, since the ribs and the like are integrally formed with the lower case, it can be manufactured at low cost.

Further, in the invention according to claim 6, among the outer ribs (152 to 155), the central portion (15) of the outer ribs (152, 155) in the longitudinal direction of the unit case (10).
Since the height (h3, h11) of 2a, 155a) is made lower than the height (h4-h7) (h12) of both ends (152b-152e) (155b, 155c), the center of this height is low. By disposing the inlet (11) and the outlet (14) at the portions (152a, 155a), it becomes easy to secure the opening area of the inlet (11) and the outlet (14), and Rib in the center (15
Combined with the low height of 0), reduces the air flow resistance,
The amount of blown air can be increased.

The reference numerals in parentheses of the above-mentioned means indicate the correspondence with the concrete means described in the embodiments described later.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of a wagon type vehicle, and 1 is a ceiling-mounted cooler unit according to the present invention, which is installed on a ceiling portion 3 in a vehicle compartment 2. Since this cooler unit 1 cools the rear seat side in the passenger compartment 2, it is generally called a rear cooler.

A front air conditioning unit 5 is installed below the front instrument panel 4 in the vehicle compartment 2 to air-condition the front seat side in the vehicle compartment 2. Further, in the engine room 6, a condenser 7, a refrigerant compressor 8 and the like of an air conditioning refrigeration cycle are installed. FIG.
7 shows a specific structure of the above-mentioned ceiling-mounted cooler unit 1. The width dimension of the cooler unit 1 (the dimension in the left-right direction in FIG. 2) is approximately the same as the width dimension in the left-right direction of the ceiling portion 3 in the vehicle compartment. Is. Since the cooler unit 1 is arranged on the ceiling portion 3 in the vehicle compartment so as to extend in the vehicle left-right direction,
The ceiling 3 has a curved shape along the curve, that is, the left and right ends are curved downward.

The cooler unit 1 has a unit case 10 which forms an air passage therein, and the unit case 10 is divided into an upper case 10a and a lower case 10b made of resin (for example, ABS resin). Both cases 10a and 10b are detachably joined together by a fastening means such as a screw with a screw 10c (see FIG. 4).

At the end of the unit case 10 on the front side of the vehicle, a suction grill (suction port) 11 for sucking air in the vehicle compartment is provided. An evaporator 12 of the refrigeration cycle is installed at a portion immediately after the suction grill 11 in the air flow path inside the unit case 10. The evaporator 12 acts as a cooler that absorbs the latent heat of vaporization of the refrigerant from the air to cool and dehumidify the air.

The evaporator 12 is constructed and arranged so that air flows obliquely downward from above as indicated by arrow A in FIG. In FIG. 4, as the evaporator 12, a type in which a plate fin and a round tube are combined is used. Then, in the air flow path in the unit case 10, a blower 13 that blows air is provided at a downstream side portion of the evaporator 12. The blower 13 is a cylindrical fan 13a generally called a cross flow fan, which is rotationally driven by a motor (not shown), and is arranged above a second drainage channel 15b described later. This blower 13
Switch 40 provided on lower case 10b (see FIG. 3)
You can turn on and off and adjust the rotation speed. Therefore, the switch 40 serves as an operation switch of the rear cooler.

An outlet grill (outlet) 14 is provided at the downstream end of the air flow path in the unit case 10 (in other words, the rear end of the vehicle), and cool air is blown from the outlet grill 14 into the passenger compartment 2 It blows out to the rear seat side. This blowout grill 1
As shown in FIGS. 2 and 3, the reference numeral 4 is divided into four parts, and each blowing grill 14 can independently change the blowing direction of the cool air to both left and right and up and down directions by manually operating the knob 14a.

Next, the drain water drainage structure, which is a feature of the present invention, will be described. FIG. 5 is a view showing the internal shape of the lower case 10b. The inner bottom surface of the lower case 10b has two first and second drainage channels 15a for draining drain water generated in the evaporator 12. , 15b are provided parallel to the vehicle left-right direction (the case longitudinal direction). Fifteen
Reference numerals 0 and 151 denote central ribs that partition between the two drainage channels 15a and 15b. Reference numeral 16 is a heat insulating material (see FIG. 4). In FIG. 5, reference numeral 40a denotes the switch 40.
It is a case portion for storing.

The width W1 of the first drainage channel 15a is sufficiently smaller than the width W2 of the second drainage channel 15b.
1 = 55.1 mm and width W2 = 94.3 mm. As shown in FIG. 4, the first drainage channel 15a having a smaller width is
Since the lower end portion of the evaporator 12 is arranged, the drain water directly flows in from this lower end portion. Further, the drain water that is scattered along with the air flow in the direction of arrow A shown in FIG. 4 drops into the wider second drainage channel 15b. Here, in the wide second drainage channel 15b close to the cylindrical fan 13a of the blower 13, the space between the second drainage channel 15b and the cylindrical fan 13a is inevitably small due to space restrictions.
When the water surface of the drain water rises, the water surface of the drain water is disturbed by the air flowing into the cylindrical fan 13a, water droplets of the drain water are mixed into the air, and water splash easily occurs in the passenger compartment. Therefore, the drainage channel is divided into two drainage channels 15a and 15b by the partition members 150 and 151, and mainly the first drainage channel is formed.
By flowing the drain water to the drainage channel 15a side, the water level of the second drainage channel 15b close to the cylindrical fan 13a is prevented from rising.

As can be understood from the curved shape of the unit case 10 shown in FIG. 2, the two drainage channels 15a and 15b are provided.
Has a shape in which the central portion in the vehicle left-right direction is high and the left and right ends are low. Therefore, drain water drainage ports (drainage ports) 1 are provided at the left and right ends of the two drainage channels 15a and 15b.
7, 18, 19, and 20 are provided. This drain port 17〜
20 is formed so as to project outward in a cylindrical shape from the lower position at both left and right ends of the lower case 10b. The drain ports 17 to 20 each have a drain hose 21 made of rubber (for example, EPDM rubber). , 22, 23, 24 are connected at one end.

The other ends of the drain hoses 21 to 24 are
The Y-shaped hose connectors 25 and 26 made of resin (for example, polypropylene) are connected to the forked portions. A rubber drain hose (not shown) on the vehicle side is further connected to the other ends of the hose connectors 25 and 26. The vehicle side drain hose passes from the vehicle ceiling to the inside of the vehicle body on the side wall of the vehicle, It is piped to the bottom of the vehicle, and drain water is discharged from the bottom of the vehicle to the outside of the vehicle.

By the way, the upper case 10a of the unit case 10 is formed with curved projecting portions 29, 30 at both left and right ends thereof along the curved shape of the vehicle ceiling. The curved protrusions 29 and 30 are not necessary for the cooler function but are installed for design reasons, and as shown in FIGS. 2 and 3, the left and right end portions 31 and 32 of the lower case 10b. Is a thin-walled protruding portion that further protrudes outward in the left-right direction from the part.

The curved protrusion 2 of the upper case 10a
Guide pieces 33 and 34 for restricting the drain hoses 21 to 24 at predetermined positions are formed on the lower surfaces of the numerals 9 and 30 by resin integral molding. The guide pieces 33, 34 are formed so as to vertically project downward (from the floor surface) from the lower surface of the curved projections 29, 30 of the upper case 10a. Of the guide pieces 33 and 34, the guide piece 33 on the right side of the vehicle is provided at one location in the present embodiment, which is located above the drain hose 22 having the longer length, of the drain hoses 21 and 22. The drain hoses 22 and 21 are brought into contact with the drain hoses 22 at predetermined positions (the drain port 1
7 and 18 below a predetermined position).

Here, the guide piece 33 on the right side of the vehicle comes into contact with an upper portion of the drain hose 22, particularly a portion in the vicinity of the hose connector 25, so that the two drain hoses 21 are connected via the hose connector 25. , 22 can be simultaneously and reliably regulated to predetermined positions. On the other hand, the guide piece 34 on the left side of the vehicle is, in this example, the drain hose 2 which is the shorter one of the drain hoses 23 and 24.
The drain hose 23 is provided at one position on the upper side of the position 3 and contacts the drain hose 23 to regulate the drain hoses 23 and 24 to predetermined positions (predetermined positions below the drain ports 19 and 20).

Here, the guide piece 34 on the left side of the vehicle abuts on a portion of the upper portion of the drain hose 23 which is close to the hose connector 26, whereby the hose connector 2
The two drain hoses 23 and 24 can be simultaneously and reliably regulated at predetermined positions via the control unit 6. Further, the guide pieces 33, 34 have a flat plate shape, and the tips (lower ends) of the guide pieces 33, 34 are formed in an arcuate rounded shape (R shape) so as not to damage the rubber drain hoses 22, 23. I am doing it.

The curved protrusion 29 of the upper case 10a,
An auxiliary cover (not shown) is attached to the lower surface of 30.
This auxiliary cover covers the drain hoses 21 to 24 so that the appearance of the drain hoses 21 to 24 is not impaired. Further, in the drain water drainage structure, in the present embodiment, as a measure for preventing water leakage due to the abrupt transition of the drain water during a sharp turn of the vehicle, the first extension extending parallel to the longitudinal direction of the case (the vehicle left-right direction), The heights of the ribs 150 to 155 that serve as banks of the second drainage channels 15a and 15b are set as follows.

That is, when the vehicle makes a sharp turn, the centrifugal force caused by the sharp turn acts on the drain water, so that the drain water abruptly moves to both ends of the first and second drainage channels 15a, 15b in the longitudinal direction (left-right direction). The drain water concentrates on the left and right ends and the water level rises. Moreover, the first drainage channel 15
Although the drain water mainly falls toward a, the first drainage channel 15a has a narrower width (flow channel cross-sectional area) than the second drainage channel 15b. The water level rise at both ends will be much larger.

Therefore, paying attention to this point, at both left and right ends of the first and second drainage channels 15a and 15b, both drainage channels 15 are formed.
The height of the ribs 150, 151 at the central portion for partitioning a and 15b is set to be the outer rib 1 which becomes the outer bank of both drainage channels 15a, 15b.
It is set lower than the height of 52 to 155. This rib 1
5 to 7 for specific design examples of heights of 50 to 155.
More specifically, since the lower case 10b is curved in the vehicle left-right direction as described above, the height h1 of the rib 150 at the center is used as a reference (h1 = 0), and other ribs are used. The heights of 151 to 155 will be described below. The height h2 of the central rib 151 located at the left end of the vehicle is −
It is 2.5 mm.

On the other hand, the height of the outer rib 152 on the vehicle front side of the first drainage channel 15a gradually increases from the central portion toward the left end portion of the vehicle. That is, the height h3 of the central portion 152a of the rib 152 is −0.6 mm, and the height h4 of the adjacent left side portion 152b thereof is +5 m.
It is set to m. The height h5 of the vehicle left end portion 152c is +13 mm, which is sufficiently higher than the height h2 of the rib 151 at the center of the vehicle left end portion.

Similarly, the height of the outer rib 152 is gradually increased from the central portion toward the right end portion of the vehicle. That is, the height h6 of the portion 152d on the right of the central portion 152a of the rib 152 is +9.4 mm, and the height h7 of the portion 152e at the right end portion of the vehicle is +17.
The height is 1 mm, which is sufficiently higher than the height h1 of the rib 150 at the center.

On the other hand, the outside rib 153 on the left side of the vehicle
Has a height h8 of its central portion 153a of +7.5 mm, and the front and rear portions 153b of the vehicle,
The height h9 of 153c is set to +13 mm. Further, the height h10 of the outer rib 154 on the side of the right side of the vehicle is as shown in FIG.
As can be seen from the above, the height is the same and +13 mm.

On the other hand, in the outer rib 155 on the vehicle rear side of the second drainage channel 15b, the height h of the central portion 155a thereof is set.
11 is +7 mm, the part 15 near the left and right ends
The height h12 of 5b and 155c is +23 mm, which is sufficiently higher than the heights h1 and h2 of the ribs 150 and 151 in the central portion. Next, the operation of the above structure will be described.
When the air conditioning switch (not shown) of the front seat air conditioning unit 5 is turned on, the compressor 8 of the air conditioning refrigeration cycle is driven by the vehicle engine (not shown), and the refrigerant circulates in the refrigeration cycle. Then, when the operation switch 40 of the cooler unit 1 for cooling the rear seat side is turned on, the blower 13 is activated. At the same time, a solenoid valve (not shown) provided in the refrigerant circuit of the evaporator 12 of the cooler unit 1 opens,
A refrigerant whose pressure is reduced by an expansion valve (pressure reducer) not shown flows into the evaporator 12.

Then, by the operation of the blower 13, the air in the vehicle compartment is sucked into the unit case 10 through the suction grill 11 and passes through the evaporator 12 in the unit case 10 as shown by an arrow A in FIG. At this time, in the evaporator 12, the refrigerant absorbs latent heat of vaporization from the air to evaporate, and the blown air is cooled and dehumidified to become cold air. The cool air is blown from the outlet grill 14 at the downstream end of the air flow path in the unit case 10 to the rear seat side in the vehicle compartment 2 to cool the rear seat side.

By the way, mainly generated by the cooling and dehumidifying action of the evaporator 12, it mainly passes through the lower end of the evaporator 12 and falls to the drainage channel 15a side of the bottom surface of the lower case 10b, and the remaining drain water is drained. It drops to the 15b side. Since the left and right ends of the drainage channels 15a and 15b are lower than the central part thereof, the drainage water is drained from the drainage ports 17 to 20 at the left and right ends of the drainage channels 15a and 15b to the drain hose 2.
After passing through 1 to 24 and the hose connectors 25 and 26, they are discharged to the outside of the vehicle from a drain hose (not shown) on the vehicle side.

In the drainage water discharge path described above,
The drain hoses 22 and 23 come into contact with the guide pieces 33 and 34 and are pushed down, whereby the drain hoses 21 to
Since the entire 24 is forcibly regulated to a predetermined position below the drain ports 17 to 20, the drain hose bends upward due to variations in drain hose piping work when the cooler unit 1 is mounted on a vehicle. Can be reliably prevented. Therefore, without always collecting drain water,
Can be discharged smoothly.

Further, by making the tips of the guide pieces 33, 34 rounded, the drain hoses 22, 23 are formed.
The drain hoses 22 and 2 can be prevented from being damaged.
3 is made of rubber, and the contact state between the drain hoses 22, 23 and the guide pieces 33, 34 can be reliably held by the elastic force of the rubber without being affected by the vibration of the vehicle or the like. Moreover, since the drain hoses 22 and 23 are made of rubber, a tapping sound is not generated at the abutting portions of the guide pieces 33 and 34 due to vehicle vibration or the like.

By the way, when the vehicle makes a sharp turn due to traveling on a sharply curved road or the like, the centrifugal force caused by the sharp turn acts on the drain water, and the drain water is discharged to the first and second drainage channels 15a, 15b. Abruptly shifts to both ends in the longitudinal direction (horizontal direction), drain water concentrates at the left and right ends, and the water level rises. Here, the drain water mainly falls into the first drainage channel 15a via the lower end portion of the evaporator 12, and
Since the first drainage channel 15a has a narrower width (channel cross-sectional area) than the second drainage channel 15b, the water level rise at both ends of the first drainage channel 15a is much larger.

However, in this embodiment, both drainage channels 15 are provided at the left and right ends of the first and second drainage channels 15a and 15b.
The heights h1 and h2 of the ribs 150 and 151 at the central portion for partitioning a and 15b are set to the heights h4, h6, h7, and h of the outer ribs 152 to 155 serving as the outer bank of the drainage channels 15a and 15b.
It is set sufficiently lower than 9, h10 and h12. Therefore, when the water level at the left and right ends of the first drainage channel 15a rises sharply due to a sharp turn, the drain water will pass over the ribs 150, 151 at the central portion having a low height, and the second drainage channel 15a.
It flows into the b side and is discharged through the drain ports 18 and 20.
Therefore, it is possible to reliably prevent the drain water from running over the outer ribs 152 to 155 and leaking to the outside of the case from the mating surfaces of the upper and lower cases 10a and 19b.

On the other hand, during normal running of the vehicle, the ribs 150 and 151 in the central portion cause the first and second drainage channels 15a,
By partitioning the space between 15b and keeping the water surface on the side of the second drainage channel 15b low, the mixture of drain water into the blown air of the blower 13 is suppressed. Further, by making the height h3 of the central portion 152a of the outer rib 152 on the vehicle front side lower than the heights h4 to h6 of the left and right end portions thereof, the suction grill 1
It becomes easy to secure the opening area of 1.

Further, the height h11 of the central portion 155a of the outer rib 155 on the rear side of the vehicle is changed to the height h12 of the left and right end portions thereof.
By lowering it, the blow resistance of the blower 13 can be reduced. Further, in order to prevent the flow of drain water from the first drainage channel 15a to the drainage port 19 from being obstructed by the switch housing case 40a, the central rib 151 is
From the left end of the case 40a for storing switches to the drain port 1
It is arranged so as to smoothly guide the drain water to 9. Due to the arrangement of the ribs 151 in the central portion, the first
At the left end of the drainage channel 15a, the channel width (channel cross-sectional area) is significantly smaller than the width (55.1 mm) of other portions (2
5.6 mm). Therefore, the rib 151 in the central portion
The height h2 is set to the lowest height (-2.5 mm). (Other Embodiments) In the above-described embodiment, among the outer ribs 152 to 155, the central portions 152a, 1 of the outer ribs 152, 155 in the longitudinal direction of the unit case 10 are arranged.
The heights h3 and h11 of 55a are set at both ends 15b to 152.
e, 155b, 155c are lower than the heights h4 to h7, h12, but if there is no hindrance to the cooling function such as securing the air flow, the central portions 152 of the outer ribs 152, 155
a, 155a at the heights h3 and h11 at both ends 15b to 1
52e, 155b, 155c heights h4 to h7, h12
May be equivalent to

The point is that, at both ends of the unit case 10 in the longitudinal direction, the heights of the outer ribs 152 to 155 need to be higher than the heights of the ribs 150 and 151 at the central portion, and other dimensional relationships. Can be variously changed according to the specific form of the cooler unit.

[Brief description of drawings]

FIG. 1 is a schematic layout diagram of a vehicle equipped with a ceiling-mounted cooler unit according to the present invention.

FIG. 2 is a front view showing a state where the ceiling-mounted cooler unit according to the embodiment of the present invention is viewed from the rear seat side of the vehicle compartment.

FIG. 3 is a bottom view showing a state where the ceiling-mounted cooler unit of FIG. 2 is viewed from the lower side in the vehicle compartment.

FIG. 4 is a sectional view taken along line XX of FIG.

5A is a plan view of a lower case of the ceiling-mounted cooler unit shown in FIG. 2, and FIG. 5B is a sectional view taken along line YY of FIG.

6 is a partially enlarged perspective view of the left side end portion of the vehicle of FIG. 5 (a).

FIG. 7 is a partially enlarged perspective view of the right side end portion of the vehicle of FIG. 5 (a).

[Explanation of symbols]

1 ... Ceiling-mounted cooler unit, 10 ... Unit case,
10a ... upper case, 10b ... lower case, 11 ... suction grill, 12 ... cooler, 13 ... blower, 14 ... blowing grill,
15a, 15b ... 1st, 2nd drainage channel, 17-20 ... Drainage port, 21-24 ... Drain hose, 25, 26 ... Hose connector, 27, 28 ... Vehicle side drain hose, 15
0, 151 ... Central ribs, 152-155 ... Outer ribs.

Claims (6)

[Claims] 1. A unit case (1) forming an air flow path.
0), and an inlet port (11) provided at the upstream end of the air flow path of the unit case (10) for sucking air in the passenger compartment,
A blower (13) arranged in the unit case (10) for blowing air, and a cooler (12) arranged in the unit case (10) for cooling the blown air of the blower (13), The unit case (10) is provided at a downstream end of an air flow path, and is provided with a blowout port (14) that blows out the cool air cooled by the cooler (12) into the vehicle compartment. In a vehicle ceiling-mounted cooler unit to be installed on a ceiling part (3), the unit bottom surface of the unit case (10) is provided parallel to the longitudinal direction of the unit case (10), and the cooler (12) is provided. First and second drained water flows
Drainage channels (15a, 15b) of the unit case (10), and drain water from the first and second drainage channels (15a, 15b) provided at both ends in the longitudinal direction of the unit case (10). A drain outlet (17 to 20) for discharging to the outside, and a drain hose (21 to 24) connected to the drain outlet (17 to 20) for guiding the drain water to the lower side of the vehicle are provided. The ribs (150, 151) in the central portion for partitioning between the second drainage channels (15a, 15b) and the outer ribs (152 to 152) serving as the banks on the outside of the first and second drainage channels (15a, 15b). 155), and at least at both ends in the longitudinal direction of the unit case (10), the heights (h1, h2) of the ribs (150, 151) at the central portion are equal to those of the outer ribs (152-155). Height (h4, h5, h 6, h7, h9, h10, h1
2) A vehicle-mounted ceiling-mounted cooler unit characterized by a lower height. 2. The width (W1) of the first drainage channel (15a).
Is narrower than the width (W2) of the second drainage channel (15b), the lower end of the cooler (12) is disposed in the first drainage channel (15a), and the second drainage channel (15b) is disposed. The blower (13) is arranged above, and the air flow path of the unit case (10) includes the suction port (11), the cooler (12), the blower (13),
The vehicle-mounted ceiling-mounted cooler unit according to claim 1, wherein the air-conditioning unit and the air outlet (14) are arranged in this order. 3. The unit case (10) is arranged so that its longitudinal direction extends in the vehicle left-right direction, and the drain ports (17 to 20) and the drain are provided at both left and right ends of the unit case (10). Hose (21-2
4) is arranged, The vehicle ceiling mounted cooler unit according to claim 1 or 2. 4. The drainage ports (17 to 20) are arranged at the left and right ends of the unit case (10) corresponding to the first and second drainage channels (15a, 15b), respectively. The drain hose (21) is connected to the drain port (17 to 20).
To 24) are respectively connected, the vehicle ceiling-mounted cooler unit according to claim 3. 5. The unit case (10) is divided into an upper case (10a) and a lower case (10b) made of resin, and the lower case (10b) includes the first and second cases. The drainage channel (15a, 15b), the drainage port (17-20), the central rib (150, 151) and the outer rib (152-155) are integrally formed. The vehicle-mounted ceiling-mounted cooler unit according to any one of 1 to 4. 6. The height (h3, h11) of the central portion (152a, 155a) of the outer ribs (152, 155) in the longitudinal direction of the unit case (10) among the outer ribs (152 to 155) is defined as: Both ends (152b to 152e)
Height of (155b, 155c) (h4 to h7) (h1
The vehicle-mounted ceiling-mounted cooler unit according to any one of claims 1 to 5, which is lower than 2).