JP3344208B2 - Ceiling cooler unit for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted cooler unit for a vehicle, and more particularly to a drainage channel structure in which drain water (condensed water) is prevented from leaking when the vehicle turns.

[0002]

2. Description of the Related Art Conventionally, in a wagon type vehicle or the like, a cooler unit is mounted on a vehicle ceiling in a vehicle lateral direction (vehicle width direction) in order to cool a rear seat side of a vehicle interior.
The ceiling-mounted cooler unit blows cool air toward the rear of the vehicle.

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

In Japanese Patent Application Laid-Open No. 4-108027, a unit case is curved so that a central portion in the vehicle left-right direction is high and both right and left ends are low. It has been proposed that drain water is drained out of the case through this drain port to improve drain water drainage.

[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 inner bottom surface of the unit case, so that the right and left ends of the unit case are suddenly applied. Occurs. However, in the prior art, none of the prior art specifically considers the rapid transition of the drain water at the time of a sharp turn of the vehicle, so the drain water suddenly shifts to the left and right ends of the unit case at the time of the sharp turn of the vehicle, The water level of the drain water at the right and left ends of the unit case rises temporarily temporarily, and as a result, there is a fear that water leaks from the mating surfaces of the upper and lower cases of the unit case.

[0006] The present invention has been made in view of the above points,
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 during a sharp turn of a vehicle in a vehicle ceiling cooler unit.

[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 case longitudinal direction,
In a vehicular ceiling-mounted cooler unit having second drainage channels (15a, 15b), attention is paid to the existence of the first and second drainage channels (15a, 15b), and ribs serving as ridges of the drainage channels are provided. About the height of (150-155)
By setting as follows, the above object is effectively achieved.

That is, when the vehicle makes a sharp turn, the centrifugal force of the sharp turn acts on the drain water, so that the drain water suddenly shifts to both longitudinal ends of the first and second drains (15a, 15b). Then, 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), a rib (150, 1
The height of 51) is set lower than the height of the outer ribs (152 to 155) serving as the outer levee of both drainage channels (15a, 15b).

With this configuration, the drain water collected at both ends of the first and second drains (15a, 15b) at the time of a sharp turn makes the ribs (150, 150) in the central part having a low height.
151), it is possible to flow from one drainage channel to the other drainage channel side, and it is possible to reliably prevent the drain water from leaking out of the case. According to the second aspect of the present invention, the width (W1) of the first drainage channel (15a) is made smaller than the width (W2) of the second drainage channel (15b), and cooling is performed in the first drainage channel (15a). The lower end of the vessel (12) is arranged, and the blower (13) is placed above the second drainage channel (15b).
And the air flow path of the unit case (10) is connected to the inlet (11), the cooler (12), and the blower (1).
3) and an outlet (14) in this order.

Therefore, in the second aspect of the invention, drain water mainly falls from the lower end of the cooler (12) toward the first drainage channel (15a), and the first drainage channel (15a).
Is narrower than the second drainage channel (15b) in width (cross-sectional area of the channel). Therefore, when turning sharply, the first drainage channel (15a) has a much higher water level rise at both ends. Become.

Then, the first drainage channel (15
The drain water collected at both ends of (a) passes over the lower central ribs (150, 151), flows into the second drainage channel (15b), and is discharged. Therefore, it is possible to reliably prevent the drain water from leaking out of the case. In addition, during normal traveling, the second drain passage (15b) in which the blower (13) is disposed above has a small inflow of the drain water and a wide width, so that the water level of the drain water can be kept low. By operating the blower (13), it is possible to suppress the drain water on the second drain passage (15b) side from splashing into the vehicle interior.

According to the fifth aspect of the present invention, the unit case (10) is divided into a resin upper case (10a) and a lower case (10b), and the lower case (10b) is provided with the first and second units. Drains (15a, 15b), drains (17-
20) Since the central ribs (150, 151) and the outer ribs (152 to 155) are integrally molded, 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.

In the invention according to the sixth aspect, of 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).
2a and 155a) are lower than the heights (h4 to h7) and (h12) of both ends (152b to 152e) (155b and 155c). By arranging the inlet (11) and the outlet (14) at the portions (152a, 155a), it is easy to secure the opening area of the inlet (11) and the outlet (14). Center rib (15
0) combined with the low height, reduces the ventilation resistance,
The amount of air blow 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. Reference numeral 1 denotes a ceiling-mounted cooler unit according to the present invention, which is installed on a ceiling portion 3 in a passenger compartment 2. Since the 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 instrument panel 4 in the front of the passenger compartment 2 and air-conditions the front seat side in the passenger compartment 2. In the engine room 6, a condenser 7 of a refrigeration cycle for air conditioning, a refrigerant compressor 8, and the like are provided. FIG.
FIG. 7 to FIG. 7 show a specific structure of the above-mentioned cooler unit 1, and the width dimension of the cooler unit 1 (the dimension in the left-right direction in FIG. 2) is substantially equal to the width dimension of the ceiling part 3 in the vehicle interior in the left-right direction. It is. The cooler unit 1 is disposed on the ceiling 3 in the vehicle interior so as to extend in the left-right direction of the vehicle.
It has a curved shape that follows the curve of the ceiling portion 3, that is, a shape in which both left and right ends are curved downward.

The cooler unit 1 has a unit case 10 inside which an air flow path is formed. The unit case 10 is divided into an upper case 10a and a lower case 10b made of resin (for example, ABS resin). The two cases 10a and 10b are integrally detachably connected to each other by fastening means such as screws with screws 10c (see FIG. 4).

At the front end of the unit case 10 on the vehicle front side, a suction grille (suction port) 11 for sucking air in the vehicle compartment is provided. An evaporator 12 of a refrigeration cycle is installed in a portion of the air flow path in the unit case 10 immediately after the suction grill 11. The evaporator 12 acts as a cooler for absorbing the latent heat of evaporation 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, a type combining a plate fin and a round tube is used as the evaporator 12. A blower 13 that blows air is provided at a downstream side of the evaporator 12 in the air flow path in the unit case 10. The blower 13 rotates a cylindrical fan 13a generally called a cross flow fan by a motor (not shown), and is disposed above a second drain passage 15b described later. This blower 13
Switch 40 provided on lower case 10b (see FIG. 3)
, The on / off and the rotation speed can be adjusted. Therefore, this switch 40 plays a role of an operation switch of the rear cooler.

At the downstream end of the air flow path in the unit case 10 (in other words, at the end on the rear side of the vehicle), an outlet grill (outlet) 14 is provided. Blow out to the rear seat inside. This outlet grill 1
4 is divided into four, as shown in FIGS. 2 and 3, and each of the blow grilles 14 can independently change the blow direction of the cool air in 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. First and second two drain passages 15a for draining drain water generated in the evaporator 12 are provided on the inner bottom surface of the lower case 10b. , 15b are provided in parallel with the vehicle left-right direction (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 denotes a heat insulating material (see FIG. 4). In FIG. 5, 40a is the switch 40.
Is a case part for storage.

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 the width W2 = 94.3 mm. In the narrower first drainage channel 15a, as shown in FIG.
Since the lower end of the evaporator 12 is disposed, the drain water directly flows in from the lower end. Further, the drain water scattered along with the air flow in the direction of arrow A shown in FIG. 4 falls into the wider second drain passage 15b. Here, in the wide second drainage channel 15b adjacent to the cylindrical fan 13a of the blower 13, the space between the cylindrical fan 13a is inevitably small due to space restrictions.
When the water level of the drain water becomes high, the water surface of the drain water is disturbed by the air flowing into the cylindrical fan 13a, and water droplets of the drain water are mixed into the air, so that water jumps easily into the vehicle interior. Therefore, the drainage channel is partitioned into two drainage channels 15a and 15b by partition members 150 and 151, and the first
By flowing drain water to the drainage channel 15a, 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, 15b
Has a shape in which a central portion in the vehicle left-right direction is high and both left and right ends are low. Therefore, drain water drain ports (drain ports) 1 are provided at the left and right ends of the two drain channels 15a and 15b.
7, 18, 19 and 20 are provided. This drain 17 ~
20 are formed at both left and right ends of the lower case 10b so as to protrude outwardly from the lower position in a cylindrical shape. Drain hoses 21 made of rubber (e.g., EPDM rubber) are respectively provided in the drain ports 17 to 20. , 22, 23, 24 are connected to 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 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 through the inside of the vehicle body from the vehicle ceiling to the vehicle side wall. The pipe is routed under the floor of the vehicle, and drain water is discharged from the tip of the vehicle under the floor to the outside of the vehicle.

The upper case 10a of the unit case 10 has curved projections 29 and 30 formed on 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. As shown in FIGS. 2 and 3, the left and right ends 31 and 32 of the lower case 10 b are provided. Is a thin-walled protruding portion that protrudes further outward in the left-right direction from the part.

Then, the curved projecting portion 2 of the upper case 10a
Guide pieces 33 and 34 for regulating the drain hoses 21 to 24 at predetermined positions are formed on the lower surfaces of the parts 9 and 30 by integral molding of resin. The guide pieces 33 and 34 are formed so as to protrude vertically (toward the floor) from the lower surfaces of the curved protruding portions 29 and 30 of the upper case 10a. Of the guide pieces 33, 34, the guide piece 33 on the right side of the vehicle is provided at a location located above the longer drain hose 22 of the drain hoses 21, 22 in this example, The drain hoses 22 and 21 are brought into contact with the drain hose 22 at predetermined positions (the drain port 1).
(Predetermined positions below 7, 18).

Here, the guide piece 33 on the right side of the vehicle is brought into contact with a portion above the drain hose 22, particularly a portion close to the hose connector 25, so that the two drain hoses 21 are connected via the hose connector 25. , 22 can be reliably and simultaneously restricted to a predetermined position. On the other hand, the guide piece 34 on the left side of the vehicle is, in this example, the drain hose 2 having the shorter length of the drain hoses 23 and 24.
One is provided at a position located above 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 is brought into contact with a portion of the upper portion of the drain hose 23 that is close to the hose connector 26, so that the hose connector 2
6, the two drain hoses 23, 24 can be simultaneously and reliably restricted to a predetermined position. The guide pieces 33 and 34 have a flat plate shape, and the tip (lower end) thereof is formed in an arcuate round shape (R shape) so that the rubber drain hoses 22 and 23 are not damaged. It is.

Note that the curved projecting portion 29 of the upper case 10a,
An auxiliary cover (not shown) is attached to the lower surface of
The drain hoses 21 to 24 are covered with the auxiliary cover so that the appearance of the drain hoses 21 to 24 is not hindered by the appearance. Further, in the drain water drainage structure, in the present embodiment, as a countermeasure for preventing water leakage due to a sudden transition of the drain water at the time of a sharp turn of the vehicle, first and second extending parallel to the case longitudinal direction (vehicle left-right direction). The heights of the ribs 150 to 155 functioning 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 of the sharp turn acts on the drain water, so that the drain water is suddenly applied to both longitudinal ends (left and right directions) of the first and second drain passages 15a and 15b. The drain water concentrates on the left and right ends, and the water level rises. Moreover, the first drainage channel 15
Although the first drainage channel 15a has a smaller width (cross-sectional area of the flow channel) than the second drainage channel 15b, the first drainage channel 15a has a smaller width than the second drainage channel 15b despite the fact that the drain water mainly falls toward the portion a. The rise in water level at both ends will be much greater.

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 15a and 15b are provided.
The height of the central ribs 150, 151 partitioning the drain ribs 15a, 15b is adjusted to the outer rib 1 serving as the outer levee of both drainage channels 15a, 15b.
It is set lower than the height of 52 to 155. This rib 1
FIGS. 5 to 7 show 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 center rib 150 is set 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 −
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 is gradually increased from the center toward the left end 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 is +5 m.
m. The height h5 of the portion 152c at the left end of the vehicle is +13 mm, which is sufficiently higher than the height h2 of the rib 151 at the center of the left end of the vehicle.

Similarly, the height of the outer rib 152 is gradually increased from the center toward the right end 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 on the right side of the vehicle is +17.
1 mm, which is sufficiently higher than the height h1 of the rib 150 at the center.

On the other hand, the outer rib 153 on the side of the left end of the vehicle
Has a height h8 of its central portion 153a of +7.5 mm and a portion 153b on the front and rear sides of the vehicle,
The height h9 of the 153c is +13 mm. The height h10 of the outer rib 154 on the right side of the right end of the vehicle is determined by the height h10 in FIG.
As can be understood from FIG.

On the other hand, the height h of the central portion 155a of the outer rib 155 on the vehicle rear side of the second drainage channel 15b
11 is +7 mm, and the portion 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 at the center. Next, the operation of the above configuration 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, an electromagnetic valve (not shown) provided in the refrigerant circuit of the evaporator 12 of the cooler unit 1 opens,
The refrigerant decompressed by an expansion valve (decompressor) not shown flows into the evaporator 12.

Then, by the operation of the blower 13, the air in the passenger compartment is sucked into the unit case 10 from 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 the latent heat of evaporation from the air and evaporates, and the blown air is cooled and dehumidified to become cool air. This 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 interior 2 to cool the rear seat side.

By the way, mainly the cooling water and the dehumidifying action of the evaporator 12 drop through the lower end of the evaporator 12 to the drain 15a on the inner bottom surface of the lower case 10b, and the remaining drain water is drained. It falls to the 15b side. Since the drainage channels 15a and 15b are lower at the left and right ends than at the center, the drain water is drained from drain ports 17 to 20 at the left and right ends of the drainage channels 15a and 15b.
Through the hose connectors 25 and 26, the water is discharged from the drain hose (not shown) on the vehicle side to the outside of the vehicle.

In the above drain water discharge path,
When the drain hoses 22 and 23 contact the guide pieces 33 and 34 and are pushed down, the drain hoses 21 to 23 are pushed down.
24 is forcibly regulated to a predetermined position below the drain ports 17 to 20, so that the drain hose piping bends when the cooler unit 1 is mounted on a vehicle, or the like, so that a bent portion of the drain hose is bent upward. Can be reliably prevented. Therefore, without always collecting drain water,
Can be discharged smoothly.

The tips of the guide pieces 33, 34 are rounded so that the drain hoses 22, 23
Of the drain hose 22, 2
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. In addition, since the drain hoses 22 and 23 are made of rubber, there is no generation of a tapping sound at the abutting portions of the guide pieces 33 and 34 due to the vibration of the vehicle or the like.

When the vehicle makes a sharp turn due to running on a sharply curved road or the like, the centrifugal force of the sharp turn acts on the drain water, and the drain water is drained by the first and second drain passages 15a and 15b. Abruptly moves to both ends in the longitudinal direction (left-right direction), and the drain water concentrates on both left and right ends, and the water level rises. Here, drain water mainly falls into the first drainage channel 15a via the lower end of the evaporator 12, and
Since the first drainage channel 15a has a smaller width (cross-sectional area of the channel) than the second drainage channel 15b, the first drainage channel 15a has a much larger rise in water level at both ends.

However, in the present embodiment, the two drainage channels 15a and 15b are located at the left and right ends of the drainage channels 15a and 15b.
The heights h1, h2 of the central ribs 150, 151 partitioning the a, 15b are determined by the heights h4, h6, h7, h of the outer ribs 152 to 155 serving as the outer levee of the drainage channels 15a, 15b.
9, it is set sufficiently lower than h10 and h12. Therefore, when the water level at the left and right end portions of the first drainage channel 15a rises sharply due to a sharp turn, the drain water climbs over the lower middle ribs 150, 151 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 getting over the outer ribs 152 to 155 and leaking out 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 first and second drainage channels 15a, 15a
By partitioning the space between 15b and keeping the water surface on the second drainage path 15b side low, the mixing of drain water into the air blown by the blower 13 is suppressed. In addition, the height h3 of the central portion 152a of the outer rib 152 on the front side of the vehicle is made lower than the heights h4 to h6 of the left and right ends thereof, so that the suction grill 1
1, the opening area can be easily secured.

The height h11 of the central portion 155a of the outer rib 155 on the rear side of the vehicle is the height h12 of the left and right ends.
By making it lower, the blowing resistance of the blower 13 can be reduced. Further, in order to prevent the flow of the drain water from the first drain passage 15a to the drain outlet 19 from being hindered by the switch housing case 40a, the central rib 151 is
Drain port 1 from the left end of switch storage case 40a
9 is arranged to smoothly guide the drain water. Due to the arrangement of the central ribs 151, the first
At the left end of the drainage channel 15a, the flow channel width (flow channel cross-sectional area) is significantly smaller than the width (55.1 mm) of the other portion (25.1 mm).
5.6 mm). Therefore, the center rib 151
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, 1a of the outer ribs 152, 155 in the longitudinal direction of the unit case 10 are provided.
The heights h3 and h11 of 55a are set at both ends 15b to 152.
e, 155b and 155c are lower than the heights h4 to h7 and h12. However, if there is no obstacle to the cooling function such as securing the air flow rate, the central portion 152 of the outer ribs 152 and 155.
a, 155a, the heights h3, h11 at both ends 15b-1
Heights h4 to h7 and h12 of 52e, 155b and 155c
May be equivalent to

The point is that the height of the outer ribs 152 to 155 should be higher than the height of the center ribs 150 and 151 at both ends in the longitudinal direction of the unit case 10. Can be variously changed according to the specific form of the cooler unit.

[Brief description of the 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 in which the ceiling-mounted cooler unit according to the embodiment of the present invention is viewed from a rear seat side in a vehicle cabin.

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

FIG. 4 is a sectional view taken along line XX of FIG. 2;

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

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

FIG. 7 is a partially enlarged perspective view of the right end portion of the vehicle in FIG.

[Explanation of symbols]

1 ... Cooler unit placed on the ceiling, 10 ... Unit case,
10a: Upper case, 10b: Lower case, 11: Suction grill, 12: Cooler, 13: Blower, 14: Blow grill,
15a, 15b: first and second drainage channels, 17 to 20: drain outlets, 21 to 24: drain hoses, 25, 26: hose connectors, 27, 28: vehicle side drain hoses, 15
0, 151: central rib, 152 to 155: outer rib.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-108027 (JP, A) JP-A-1-254417 (JP, A) JP-A-59-80625 (JP, U) JP-A-59-80625 102515 (JP, U) Japanese Utility Model Showa 54-114457 (JP, U) Japanese Utility Model Utility Model 2-93622 (JP, U) Japanese Utility Model Utility Model 59-53115 (JP, U) Japanese Utility Model Utility Model 62-32925 (JP, U) (JP, Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60H 1/32 613 B60H 1/32 614 B60H 1/00 F24F 1/00 F24F 1/00 371

Claims (6)

(57) [Claims] A unit case (1) forming an air flow path.
0), an intake port (11) provided at an upstream end of the air flow path of the unit case (10), and for inhaling vehicle interior air;
A blower (13) arranged in the unit case (10) and blowing air, and a cooler (12) arranged in the unit case (10) and cooling the blown air of the blower (13). An outlet (14) that is provided at the downstream end of the air flow path of the unit case (10) and that blows cold air cooled by the cooler (12) into the vehicle interior; In a vehicle-mounted cooler unit installed on a ceiling part (3), the cooler unit (12) is provided on an inner bottom surface part of the unit case (10) in parallel with a longitudinal direction of the unit case (10). First and second flows of generated drain water
Drain passages (15a, 15b) and drain water from the first and second drain passages (15a, 15b) provided at both longitudinal ends of the unit case (10). A drain port (17-20) for discharging to the outside, and a drain hose (21-24) connected to the drain port (17-20) for guiding drain water downward of the vehicle. Central ribs (150, 151) partitioning between the second drainage channels (15a, 15b), and outer ribs (152-152) serving as dykes outside the first and second drainage channels (15a, 15b). 155), and at least at the longitudinal ends of the unit case (10), the heights (h1, h2) of the central ribs (150, 151) are adjusted to the heights of the outer ribs (152-155). Height (h4, h5, h 6, h7, h9, h10, h1
2) A vehicular ceiling cooler unit characterized by being lower. 2. The width (W1) of the first drainage channel (15a).
Is smaller than the width (W2) of the second drainage channel (15b), the lower end of the cooler (12) is arranged in the first drainage channel (15a), and the second drainage channel (15b) The air blower (13) is disposed above the air conditioner, and the air flow path of the unit case (10) is formed by the suction port (11), the cooler (12), the blower (13),
The ceiling-mounted cooler unit for a vehicle according to claim 1, wherein the cooler unit is arranged in the order of a blower and an outlet (14). 3. The unit case (10) is disposed such that a longitudinal direction thereof extends in the vehicle left-right direction. The drain ports (17 to 20) and the drain are provided at left and right end portions of the unit case (10). Hose (21-2
4. The cooler unit according to claim 1, wherein 4) is disposed. 4. The drain ports (17 to 20) are disposed at both left and right end portions of the unit case (10) in correspondence with the first and second drain paths (15a, 15b), respectively. The drain hose (21-20) is connected to the drain port (17-20).
The ceiling cooler unit for a vehicle according to claim 3, wherein each of the cooling units is connected. 5. The unit case (10) is divided into an upper case (10a) and a lower case (10b) made of resin, and the first case and the second case are provided in the lower case (10b). The drainage channel (15a, 15b), the drainage port (17-20), the central rib (150, 151) and the outer rib (152-155) are integrally formed. 5. The vehicle-mounted cooler unit according to any one of items 4 to 4. 6. The height (h3, h11) of the central portion (152a, 155a) of the outer rib (152, 155) in the longitudinal direction of the unit case (10) among the outer ribs (152-155). Both ends (152b-152e)
(155b, 155c) height (h4-h7) (h1
The ceiling cooler unit for a vehicle according to any one of claims 1 to 5, wherein the cooling unit is lower than 2).