air conditioning unit

Abstract

To provide an air conditioning unit capable of cooling a user's body without reducing the cooling efficiency of a Peltier element. [Solution] The air conditioning unit 1 has a casing 2 having an air intake 2a formed at one end and an air outlet 2b formed at the other end, and an air outlet 2c formed in part of the side wall of a cylindrical body, and a Peltier element 11, a fan 9, and a partition plate 12 are provided inside the casing 2. The partition plate 12 is provided on the same surface as the Peltier element 11 inside the casing 2, and divides the internal space of the casing 2 downstream of the fan 9 into an air-conditioned space 51 and a heat exhaust space 52. Inside the casing 2, the opening area of ​​the heat exhaust space 52 separated by the partition plate 12 is configured to be 1.3 times or more the opening area of ​​the air-conditioned space 51.

Description

[Technical Field]

[0001] The present invention relates to an air conditioning unit that cools a user's body. [Background technology]

[0002] Conventionally, air conditioning units for cooling or heating the user's body have been proposed, for example, as disclosed in Patent Documents 1 and 2. These conventional air conditioning units are all configured to cool or heat the user's body using a Peltier element. These air conditioning units have a metal plate member bonded to one side of the Peltier element, and the plate member is placed in close proximity to the user's back, etc. Then, a heat absorption effect is generated on one side of the Peltier element, cooling the plate member, thereby cooling the user's back, etc.

[0003] When heat is absorbed on one side of a Peltier element, the other side generates heat. If the amount of heat absorbed by one side is 1, the amount of heat generated by the other side is approximately 1.3 times greater. Therefore, when using a Peltier element to cool a user, the heat generated on the heat-generating side must be released into the surrounding area, and if this is not done sufficiently, the cooling efficiency of the Peltier element will decrease. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2022-63478 [Patent Document 2] Japanese Patent Application Publication No. 2023-56164 Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the object of this invention is to provide an air conditioning unit that can continuously cool the user's body without reducing the cooling efficiency of the Peltier element. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, first, the present invention provides an air conditioning unit for cooling a user's body, comprising: a casing having an air intake at one end and an air outlet at the other end, and an air outlet formed in a portion of the side wall of the casing; a plate-shaped Peltier element arranged inside the casing parallel to the direction from the air intake to the air outlet; a fan arranged inside the casing between the Peltier element and the air intake; a partition plate arranged on the same surface as the Peltier element inside the casing and dividing the internal space of the casing downstream of the fan into an air-conditioned space and a heat exhaust space; and a guide plate downstream of the partition plate for guiding air flowing through the heat exhaust space to the air exhaust port. The air is sucked in through the air intake by driving the fan, cooled in the air-conditioned space, and blown out through the air outlet to cool the user's body. The configuration is characterized in that the opening area of ​​the heat exhaust space separated by the partition plate inside the casing is 1.3 times or more the opening area of ​​the air-conditioned space.

[0007] Secondly, the present invention is characterized in that, in an air conditioning unit having the first configuration, a trapezoidal bulge portion is provided in the air-conditioning space by causing the inner wall of the casing to bulge toward the partition plate, and the bulge portion narrows the flow path of the air sent into the air-conditioning space by the fan.

[0008] Thirdly, the present invention is characterized in that in the air conditioning unit having the second configuration, a plurality of straightening plates are arranged parallel to each other at a predetermined interval in the heat exhaust space, standing from the inner wall of the casing toward the partition plate and extending from the air intake toward the air outlet, and the exhaust port is opened in the form of a slit between the plurality of straightening plates.

[0009] Fourth, the present invention provides an air conditioning unit having the third configuration, further comprising: a first heat exchanger member joined to a first surface of the Peltier element facing the air-conditioning space and having a plurality of fins arranged in parallel at a predetermined interval; and a second heat exchanger member joined to a second surface of the Peltier element facing the heat dissipation space and having a plurality of fins arranged in parallel at a predetermined interval; wherein the first heat exchanger member is attached with the plurality of fins abutting the bulge portion, and the second heat exchanger member is attached with the plurality of fins abutting the straightening plate.

[0010] Fifth, the present invention is an air conditioning unit having any of the configurations 1 to 4, characterized in that, inside the casing, the opening area of ​​the heat exhaust space separated by the partition plate is 1.5 times or more the opening area of ​​the air-conditioning space. [Effects of the Invention]

[0011] According to this invention, the opening area of ​​the heat exhaust space separated by the partition plate inside the casing is 1.3 times or more the opening area of ​​the cooling space. This allows the heat generated on the other side of the Peltier element to be efficiently exhausted. Therefore, the air conditioning unit of this invention can continuously cool the user's body without reducing the cooling efficiency of the Peltier element. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 2 is a perspective view showing the air conditioning unit. [Figure 2] FIG. 2 is a perspective view showing the air conditioning unit in an exploded state. [Figure 3] FIG. 2 is a diagram showing the configuration of a heat exchanger. [Figure 4] FIG. 10 is a diagram showing a state in which the fan and the heat exchanger are attached to the casing body. [Figure 5] FIG. 4 is a perspective view showing the inside of the casing cover. [Figure 6]4 is a side cross-sectional view showing the internal configuration of the air conditioning unit with the casing cover fixed to the casing body. FIG. [Figure 7] 7 is a cross-sectional view taken along the line AA in FIG. 6, showing the opening areas of the cooling space and the heat exhaust space separated by the partition plate. FIG. [Figure 8] FIG. 2 is a diagram showing an attachment that can be attached to the air conditioning unit. [Figure 9] FIG. 10 is a diagram showing a neck-hanging type attachment. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Note that common members in the embodiments described below are designated by the same reference numerals, and redundant descriptions thereof will be omitted.

[0014] 1 is a perspective view showing an example of an air conditioning unit 1 according to one embodiment of the present invention. This air conditioning unit 1 is a unit for cooling the user's body, and can be used by itself as a handheld unit, or can be used with various attachments as described below.

[0015] This air conditioning unit 1 is configured with a cylindrical casing 2 having an air intake 2a formed at one end and an air outlet 2b formed at the other end. Note that both ends of the casing 2 are cut obliquely rather than perpendicularly to the axial direction of the casing 2. Therefore, the air intake 2a and the air outlet 2b are formed as inclined openings at both ends of the casing 2.

[0016] The casing 2 is made up of a casing main body 4, which is split in half along the central axis of a cylindrical body having, for example, a rectangular cross section, and a casing cover 3. The casing 2 is formed into a cylindrical body by covering the casing main body 4 with the casing cover 3. The casing 2 has a plurality of exhaust ports 2c formed in the shape of slits in part of the side wall of the cylindrical body. For example, the exhaust ports 2c are formed in the wall portion (ceiling wall) of the casing cover 3.

[0017] The casing 2 also has ribs 5 extending along the longitudinal direction of the casing 2 on both the left and right sides where the casing body 4 and the casing cover 3 are joined. The ribs 5 are positioning protrusions when attaching various attachments to the air conditioning unit 1.

[0018] The air conditioning unit 1 is equipped with a heat exchanger inside, and draws in air through the intake port 2a and exchanges heat inside the casing 2. The air conditioning unit 1 then blows out cooled air from the outlet port 2b and releases and exhausts warm air from the outlet port 2c. In other words, the air conditioning unit 1 generates an airflow inside the casing 2 from the intake port 2a toward the outlet port 2b, and blows out cooled air from the outlet port 2b. Plate-shaped guards 6 are arranged at predetermined intervals at the intake port 2a and the outlet port 2b to prevent the entry of users' hands or foreign objects. In the following, the "upstream side" and "downstream side" inside the casing 2 are defined according to the direction of the air flowing from the intake port 2a toward the outlet port 2b.

[0019] 2 is a perspective view showing an exploded state of the air conditioning unit 1. Horizontal plates 7 that cross between the upper ends of the left and right walls are fixed to one end and the other end of the casing main body 4. A plurality of guards 6 are arranged at predetermined intervals above and below the horizontal plates 7, forming an intake port 2a and an outlet port 2b that are difficult for foreign objects to enter.

[0020] Inside the casing main body 4, from upstream to downstream, are provided a fan holding section 40, a support wall 43, a heat exchanger 47, and a guide plate 49. The fan holding section 40 is a holding space formed between a pair of holding walls 41, 42 (see FIG. 6) provided at a predetermined distance downstream of the air intake 2a, and houses and holds the cylindrical fan 9 inside. For example, the pair of holding walls 41, 42 are formed as arc-shaped walls that engage with the outer edge of the fan 9. As shown in FIG. 5, a similar pair of holding walls 41, 42 is also formed on the casing cover 3, and the fan 9 is fixed to the fan holding section 40 by joining and fixing the casing cover 3 to the casing main body 4.

[0021] A support wall 43 is provided downstream of the fan holding portion 40. The support wall 43 stands upright from the bottom of the casing main body 4. The height of the support wall 43 is determined so that it joins with the inner ceiling surface of the casing cover 3 when the casing cover 3 is placed over the casing main body 4.

[0022] Two openings 44, 45 are formed in the support wall 43, one at the top and one at the bottom, and the air blown out from the fan 9 is guided through the two openings 44, 45 to a heat exchanger 47 on the downstream side. The support wall 43 has a cross beam 46 between the two openings 44, 45, and a support portion 46a is provided in the center of the cross beam 46 to position and support the heat exchanger 10. The support portion 46a is formed, for example, by a recess formed by cutting out the upper edge of the cross beam 46.

[0023] Guide plate 49 is joined to guard 6 and horizontal plate 7 provided at air outlet 2b, stands perpendicular to the wind direction inside casing 2, and is positioned so as to directly face the wind blown from fan 9. Guide plate 49 is provided only above horizontal plate 7 provided at air outlet 2b, and is not provided below horizontal plate 7. Therefore, the wind blown out from fan 9 passes only below horizontal plate 7 before being blown out from air outlet 2b.

[0024] The guide plate 49 also has a support portion 49a at the lower center that positions and supports the heat exchanger 10. The support portion 49a is formed by a hole provided in the guide plate 49, for example.

[0025] The heat exchanger 47 is provided inside the casing 2 between the support wall 43 and the guide plate 49. The heat exchanger 47 accommodates and holds the heat exchanger 10 between the support wall 43 and the guide plate 49. In addition, a bulge 48 that bulges out in a trapezoidal shape toward the casing cover 3 disposed opposite the heat exchanger 47 is formed on the inner wall (bottom) of the casing main body 4.

[0026] 3 is a diagram showing the configuration of the heat exchanger 10. The heat exchanger 10 includes a plate-shaped Peltier element 11, a partition plate 12, a first heat exchange member 21, and a second heat exchange member 22.

[0027] Peltier element 11 is disposed parallel to the direction of airflow from intake port 2a to outlet port 2b inside casing 2. When electricity is applied to Peltier element 11, a heat absorption effect occurs on first surface 11a and a heat generation effect occurs on second surface 11b.

[0028] The partition plate 12 is a rectangular plate with heat-insulating and insulating properties. The thickness of the partition plate 12 is equal to the thickness of the Peltier element 11. A holding hole 12a capable of housing and holding the Peltier element 11 is formed in the center of the partition plate 12. The Peltier element 11 is held in a housed state in the holding hole 12a. Therefore, the partition plate 12 is disposed on the same plane as the Peltier element 11.

[0029] The length of the partition plate 12 is equal to the distance between the support wall 43 and the guide plate 49 in the casing body 4. Engagement protrusions 13 and 14 are provided at the center of both ends of the partition plate 12. These engagement protrusions 13 and 14 are used to position and mount the heat exchanger 10 in the heat exchange section 47. That is, the engagement protrusion 13 engages with a support portion 46a provided on the cross beam 46 of the support wall 43, and the engagement protrusion 14 engages with a support portion 49a provided on the guide plate 49.

[0030] A first heat exchange member 21 is arranged on the lower surface side of the partition plate 12 that holds the Peltier element 11 so as to be joined to the first surface 11a of the Peltier element 11. Furthermore, a second heat exchange member 22 is arranged on the upper surface side of the partition plate 12 that holds the Peltier element 11 so as to be joined to the second surface 11b of the Peltier element 11.

[0031] The first heat exchange member 21 is configured by stacking a plurality of fins 24, which are formed, for example, by bending a copper plate into a U-shape. The top surface of the first heat exchange member 21 is joined to the first surface 11a of the Peltier element 11, and the plurality of fins 24 are cooled by the heat absorption effect of the first surface 11a. The first heat exchange member 21 then passes the airflow sent from the fan 9 between the plurality of fins 24, thereby exchanging heat between the fins 24 and the air, cooling the airflow and converting it into cooling air.

[0032] The second heat exchange member 22 is configured by stacking multiple fins 25, each formed by bending a copper plate into a U-shape, for example. The lower surface of the second heat exchange member 22 is joined to the second surface 11b of the Peltier element 11, so the multiple fins 25 are heated by the heat generation effect of the second surface 11b. The second heat exchange member 22 exchanges heat between the fins 25 and the air by causing the airflow sent from the fan 9 to flow between the multiple fins 25, and dissipates heat generated from the second surface 11b into the air. An opening 26 is formed on the upper surface of the second heat exchange member 22, which is open on the downstream side of the airflow and guides the airflow upward.

[0033] 4 is a diagram showing the state in which the fan 9 and the heat exchanger 10 are attached to the casing main body 4. As shown in FIG. 4, the heat exchanger 10 is installed between the support wall 43 and the guide plate 49. The partition plate 12 is supported at both ends by the support wall 43 and the guide plate 49. Therefore, the partition plate 12 is installed so as to divide the heat exchange section 47 into upper and lower halves.

[0034] The casing cover 3 is placed over the casing body 4 with the fan 9 and heat exchanger 10 attached. Ribs 5a are formed on both left and right edges of the casing cover 3. Ribs 5b are also formed on both left and right edges of the casing body 4. The casing cover 3 and the casing body 4 are fixed together with the ribs 5a and 5b overlapping each other. The two ribs 5a and 5b overlap to form ribs 5 on both left and right sides of the casing 2.

[0035] 5 is a perspective view showing the inside of the casing cover 3. As described above, the casing cover 3 has a fan holding portion 40 that houses the fan 9, just like the casing main body 4. The fan holding portion 40 is formed on the inside of a pair of holding walls 41, 42 that are spaced a predetermined distance apart, and holds the fan 9 inside the casing 2. When the casing cover 3 is placed over the casing main body 4, the holding walls 41, 42 of the casing cover 3 join to the holding walls 41, 42 of the casing main body 4 to form an integrated holding wall 41, 42.

[0036] The casing cover 3 also includes a plurality of straightening vanes 31 that are erected toward the casing main body 4 between the plurality of slit-shaped exhaust ports 2c downstream of the fan holder 40 and extend from the intake port 2a toward the outlet port 2b. The plurality of straightening vanes 31 are erected perpendicularly from the wall (ceiling wall) of the casing cover 3 and are arranged parallel to each other at predetermined intervals. Therefore, the air blown out from the fan 9 can pass between the plurality of straightening vanes 31. The plurality of slit-shaped exhaust ports 2c are arranged from the center of the straightening vanes 31 toward the downstream side. The plurality of straightening vanes 31 form a trapezoidal shape when viewed from the side.

[0037] FIG. 6 is a side cross-sectional view showing the internal configuration of the air conditioning unit 1 with the casing cover 3 fixed to the casing main body 4. As shown in FIG. 6, the heat exchanger 10 provided in the heat exchange section 47 has a partition plate 12 that divides the internal space of the casing 2 into two spaces, upper and lower, downstream of the fan 9. The first surface 11a of the Peltier element 11 faces the space below the partition plate 12, and a first heat exchange member 21 is disposed in contact with the first surface 11a. Therefore, the space below the partition plate 12 is a cooling space 51 that cools the air blown out by the fan 9. The second surface 11b of the Peltier element 11 faces the space above the partition plate 12, and a second heat exchange member 22 is disposed in contact with the second surface 11b. Therefore, the space above the partition plate 12 is a heat exhaust space 52 that exhausts heat generated by the heat generation of the Peltier element 11.

[0038] 6, the first heat exchange member 21 is disposed so that its lower surface abuts against a bulge 48 provided on the bottom of the casing 2. The second heat exchange member 22 is disposed so that its upper surface abuts against a flow rectifying plate 31 protruding from the ceiling wall of the casing 2. Therefore, when the casing cover 3 is attached to the casing body 4, the heat exchanger 10 is fixed in the heat exchange section 47.

[0039] The air conditioning unit 1 configured as described above is used by energizing the Peltier element 11 to generate heat absorption on the first surface 11a and heat generation on the second surface 11b, and then driving the fan 9. The air sent into the casing 2 from the air intake 2a by the fan 9 is separated into air flowing through the air-conditioned space 51 and air flowing through the heat exhaust space 52 as it enters the heat exchanger 47 from the support wall 43.

[0040] The air-conditioned space 51 has a trapezoidal bulge 48 downstream of the support wall 43, narrowing the air flow path. As a result, air entering the air-conditioned space 51 is compressed by the narrowed air flow path. The compressed air is then cooled by heat exchange with the first heat exchange member 21. The air flow path downstream of the first heat exchange member 21 is widened by the downward slope of the bulge 48. As a result, the air passing through the first heat exchange member 21 expands in the widened air flow path, further reducing its temperature. The cooled air then becomes cooled air and is blown out from the air outlet 2b. In other words, the air flowing through the air-conditioned space 51 is cooled by two actions: cooling through heat exchange with the first heat exchange member 21 and a temperature reduction due to expansion.

[0041] On the other hand, the heat release space 52 has a flow path of a substantially constant width compared to the cooling space 51. The air entering the heat release space 52 forms two flows: air flowing inside the second heat exchange member 22 and air flowing above the second heat exchange member 22. The air flowing inside the second heat exchange member 22 passes through gaps between the multiple fins 25 of the second heat exchange member 22 and is heated to air at a temperature higher than room temperature by heat exchange. In addition, the air flowing above the second heat exchange member 22 is heated to air at a temperature higher than room temperature by heat exchange with the upper surface of the second heat exchange member 22.

[0042] A guide plate 49 is provided in the heat exhaust space 52 downstream of the second heat exchange member 22. This guide plate 49 functions as a baffle plate that prevents the air flowing through the heat exhaust space 52 from proceeding toward the outlet 2b, and guides the air that has been heated by heat exchange toward the exhaust port 2c. Therefore, the high-temperature air is not blown out from the outlet 2b. In other words, the air heated in the heat exhaust space 52 is discharged in a direction different from the cooling air blown out from the outlet 2b.

[0043] Fig. 7 is a cross-sectional view taken along line AA in Fig. 6, showing the opening areas of the cooling space 51 and the heat exhaust space 52 separated by the partition plate 12. As shown in Fig. 7, the opening area of ​​the cooling space 51 is S1. The opening area of ​​the heat exhaust space 52 is S2.

[0044] When the Peltier element 11 absorbs heat on the first surface 11a, it generates heat on the second surface 11b. If the amount of heat absorbed on the first surface 11a is 1, the amount of heat generated on the second surface 11b is approximately 1.3 times that amount. The air conditioning unit 1 is configured so that the opening area S2 of the heat exhaust space 52 is 1.3 times or more the opening area S1 of the cooling space 51. For example, if the distance between the upper surface of the bulge 48 and the partition plate 12 is H1 and the distance between the partition plate 12 and the exhaust port 2c is H2, achieving the relationship H2 > 1.3 × H1 allows the opening area S2 to be 1.3 times or more the opening area S1. This allows 1.3 times the amount of air flowing through the heat exhaust space 52 as the amount of air flowing through the cooling space 51, thereby effectively dissipating the heat generated on the second surface 11b. As a result, the heat absorption effect of the first surface 11a can be prevented from decreasing, and the air conditioning unit 1 can improve the cooling efficiency of the Peltier element 11.

[0045] Furthermore, depending on the Peltier element 11 used, when the amount of heat absorbed on the first surface 11a is set to 1, the amount of heat generated on the second surface 11b may be approximately 1.5 times that amount. Therefore, a more preferable configuration of the air conditioning unit 1 is one in which the opening area S2 of the heat exhaust space 52 is 1.5 times or more the opening area S1 of the cooling space 51. This makes it possible to prevent a decrease in the heat absorption effect on the first surface 11a, even if the amount of heat generated on the second surface 11b differs due to individual differences in the Peltier elements 11.

[0046] Next, Fig. 8 is a diagram showing an attachment 60 that is attached to the air conditioning unit 1. Fig. 8(a) shows the attachment 60 in an unattached state, and Fig. 8(b) shows the attachment 60 in an attached state. Two air conditioning units 1a, 1b can be attached to this attachment 60. As shown in Fig. 8(a), the attachment 60 has two slots 62, 63 in a box-shaped housing 61, with a partition wall 64 between the two slots 62, 63. The partition wall 64 is provided with a slit 65 into which the ribs 5 of the air conditioning units 1a, 1b can be inserted, and the outer wall portions of the slots 62, 63 are provided with guides 66 into which the ribs 5 of the air conditioning units 1a, 1b can be inserted.

[0047] Furthermore, openings 67 are provided on the top surface of the housing 61 at positions corresponding to the exhaust ports 2c of the air conditioning units 1a and 1b. The attachment 60 is attached by inserting the air conditioning units 1a and 1b into the slots 62 and 63 through insertion openings 68 provided on one end of the housing 61. The attachment 60 holds the two air conditioning units 1a and 1b side by side, as shown in Fig. 8(b).

[0048] This attachment 60 is worn, for example, around the user's waist, and is intended to blow cooling air toward the user's back. For this purpose, a housing 61 of the attachment 60 is provided with a wearing section 70 for the user to wear it. For example, a belt wearing section 71 for wearing a rubber band or the like is provided on the body of the housing 61. An insertion section 72 for inserting into a belt or the inside of trousers is provided on the intake port 2a side of the housing 61. Furthermore, holding sections 73 and 74 for receiving and holding the bottom of a jacket worn by the user are provided near the air outlet 2b of the housing 61. By using these wearing sections 70, the user can wear the attachment 60 around their waist.

[0049] FIG. 9 is a diagram showing a neck-hanging type attachment 80. Similar to the attachment 80 described above, this attachment 80 also has a slot 82 in its housing 81, into which the air conditioning unit 1 is inserted and attached. The left and right sides of the housing 81 of the attachment 80 are bulged, and controllers such as a battery and drive circuit can be housed inside these bulged portions. In addition, neck straps 84 are provided on both the left and right sides of the attachment 80. Therefore, by hanging the neck strap 84 around the user's neck, the user can enjoy the cooling air blown out from the air conditioning unit 1 on their neck and face.

[0050] In this way, the air conditioning unit 1 of this embodiment can be used not only by itself, but also with the above-mentioned various attachments 60, 80. In particular, using the various attachments 60, 80 has the advantage of allowing the user to use both hands freely.

[0051] It should be noted that the present invention is not limited to the contents described in the above embodiment, and various modifications are of course applicable. [Explanation of symbols]

[0052] 1...air conditioning unit, 2...casing, 2a...air intake, 2b...air outlet, 2c...exhaust outlet, 3...casing cover, 4...casing body, 9...fan, 10...heat exchanger, 11...Peltier element, 12...partition plate, 49...guide plate, 21...first heat exchange member, 22...second heat exchange member, 31...rectifying plate, 48...bulge, 51...air conditioning space, 52...heat exhaust space, S1, S2...opening area.

Claims

1. 1. An air conditioning unit for cooling a user's body, comprising: a casing having an intake port at one end and an outlet port at the other end, the casing being a cylindrical body having an exhaust port formed in a part of a side wall thereof; a plate-shaped Peltier element disposed inside the casing in parallel with a direction from the intake port toward the air outlet; a fan provided inside the casing between the Peltier element and the air intake; a partition plate provided inside the casing on the same surface as the Peltier element, the partition plate dividing the interior space of the casing downstream of the fan into a cooling space and a heat exhaust space; a guide plate located downstream of the partition plate and configured to guide the air flowing through the heat exhaust space to the exhaust port; Equipped with The fan is driven to cool the air drawn in through the air intake port in the cooling space and then blow the cooled air out through the air outlet, thereby cooling the body of a user. An air conditioning unit characterized in that, inside the casing, the opening area of ​​the heat exhaust space partitioned by the partition plate is 1.3 times or more the opening area of ​​the cooling space.

2. The cooling space is provided with a trapezoidal bulging portion formed by bulging an inner wall of the casing toward the partition plate, 2. The air conditioning unit according to claim 1, wherein the bulging portion narrows a flow path of air sent into the cooling space by the fan.

3. a plurality of straightening plates are provided in parallel at predetermined intervals in the heat exhaust space, the straightening plates standing from the inner wall of the casing toward the partition plate and extending from the intake port toward the outlet port; The air conditioning unit according to claim 2, wherein the exhaust port is a slit-shaped opening between the plurality of rectifying plates.

4. a first heat exchange member joined to a first surface of the Peltier element facing the air-conditioned space and including a plurality of fins arranged in parallel at predetermined intervals; a second heat exchange member joined to a second surface of the Peltier element facing the heat exhaust space and including a plurality of fins arranged in parallel at predetermined intervals; Further provided with the first heat exchange member is attached with a plurality of fins in contact with the bulging portion, The air conditioning unit according to claim 3, wherein the second heat exchange member is attached with a plurality of fins in contact with the rectifying plate.

5. 5. The air conditioning unit according to claim 1, wherein the opening area of ​​the heat exhaust space partitioned by the partition plate inside the casing is 1.5 times or more the opening area of ​​the cooling space.

Images