Bed canopy

Abstract

To provide a technology capable of improving amenity of a sleeper lying in a space in a canopy, concerning a bed canopy installed in a habitable room into which air-conditioning air is blown out from above, and having an upper cover for covering an upper part of a sleeping space.SOLUTION: An upper cover 12 is constituted of an air-permeable sheet, and a first cool air reservoir part X1 is formed on the upper cover 12.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a bed canopy that covers at least the upper part of a sleeping space. [Background technology]

[0002] 2. Description of the Related Art A bed canopy is known that is installed in a room from which conditioned air is blown out from above and has a top cover that covers the upper part of a sleeping space (see, for example, Patent Document 1). The bed canopy described in Patent Document 1 is configured such that the top cover is made up of a breathable base and a non-breathable or poorly breathable exterior cloth that is detachable from the base, in order to prevent conditioned air blown out from an air conditioner from entering the internal space of the bed canopy directly from the top cover side (sometimes referred to as the "canopy interior space" in this application). In addition, the bed canopy described in Patent Document 1 can be used as a breathable mosquito net as a whole by removing the exterior cloth from the top cover. In the bed canopy described in the above Patent Document 1, the conditioned air blown out from the air conditioner and reaching the top cover is prevented from entering the space inside the canopy by the exterior fabric, and is diffused along the top cover toward the outside of the surrounding cover. Then, a part of this diffused conditioned air passes through the breathable surrounding cover and enters the space inside the canopy. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-049551 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the bed canopy described in Patent Document 1, the amount of conditioned air entering the canopy space from the surrounding cover and the entry point, etc., tend to be unstable, making it difficult to maintain the comfort of the sleeper in the canopy space. In addition, although the upper cover can be made breathable by removing the exterior cloth from the upper cover, most of the conditioned air that reaches the upper cover is diffused to the outside of the surrounding cover immediately after hitting the upper cover, making the entry state of the conditioned air from the upper cover unstable, making it difficult to sufficiently improve the comfort of the sleeper.

[0005] In view of this situation, the main objective of the present invention is to provide a technology that can improve the comfort of the sleeper in the space within a bed canopy that is installed in a room where conditioned air is blown out from above and has a top cover that covers the upper part of the sleeping space. [Means for solving the problem]

[0008] The present invention 1 The characteristic configuration is: The air conditioner is installed in a room where cold air, which is cooled conditioned air, is blown out from above by an air conditioner performing cooling operation. A bed canopy having a top cover that covers the upper part of a sleeping space, The upper cover is made of a breathable sheet, A first cold air reservoir, which is an upward recess with an open top, is formed on the top cover; The upper cover is provided in an inclined position with respect to a horizontal plane.

[0009] According to this configuration, since the first cold air reservoir, which is a recess, is formed on the top cover, the conditioned air that is blown out from the air conditioner and reaches the first cold air reservoir on the top cover can be temporarily stored in the first cold air reservoir. Then, the conditioned air temporarily stored in the first cold air reservoir on the top cover passes through the top cover stably throughout the entire top cover and enters the canopy interior space from above. Therefore, in the canopy interior space, an appropriate amount of conditioned air is supplied from above over a wide area, so that comfortable air conditioning with an appropriate air flow can be realized. Furthermore, since heat is sufficiently transferred from the conditioned air stored in the first cold air reservoir to the top cover, the top cover can be maintained at an appropriate temperature, and radiant heat from the building structure to the canopy interior space can be appropriately blocked, and air conditioning by radiation from the top cover can also be realized. Therefore, the present invention can provide a technology that can improve the comfort of sleepers in the space within a bed canopy that is installed in a room where conditioned air is blown out from the top and has a top cover that covers the upper part of the sleeping space. Furthermore, According to this configuration, by providing the top cover in an inclined position, more conditioned air can be stored on the lower side of the top cover than on the higher side in the first cold air reservoir on the top cover, Conditioned air can be supplied to a sleeper in the space within the canopy by actively passing the conditioned air through the lower side of the upper cover.

[0010] The present invention 2 The characteristic configuration is: The air conditioner is installed in a room where cold air, which is cooled conditioned air, is blown out from above by an air conditioner performing cooling operation. A bed canopy having a top cover that covers the upper part of a sleeping space, The upper cover is made of a breathable sheet, A first cold air reservoir, which is an upward recess with an open top, is formed on the top cover; the top cover has a high side and a low side that is lower than the high side, In the upper cover, the higher side is located on the foot side of the sleeping space, and the lower side is located on the head side of the sleeping space.

[0011] According to this configuration, since the first cold air reservoir, which is a recess, is formed on the top cover, the conditioned air that is blown out from the air conditioner and reaches the first cold air reservoir on the top cover can be temporarily stored in the first cold air reservoir. Then, the conditioned air temporarily stored in the first cold air reservoir on the top cover passes through the top cover stably throughout the entire top cover and enters the canopy interior space from above. Therefore, in the canopy interior space, an appropriate amount of conditioned air is supplied from above over a wide area, so that comfortable air conditioning with an appropriate air flow can be realized. Furthermore, since heat is sufficiently transferred from the conditioned air stored in the first cold air reservoir to the top cover, the top cover can be maintained at an appropriate temperature, and radiant heat from the building structure to the canopy interior space can be appropriately blocked, and air conditioning by radiation from the top cover can also be realized. Therefore, the present invention can provide a technology that can improve the comfort of sleepers in the space within a bed canopy that is installed in a room where conditioned air is blown out from the top and has a top cover that covers the upper part of the sleeping space. Furthermore, According to this configuration, by positioning the top cover with the head side lower than the foot side, more conditioned air can be stored on the head side of the top cover in the first cold air collection section on the top cover than on the foot side.The conditioned air can be supplied mainly to the head side of the sleeper in the space within the canopy in a manner that actively passes the conditioned air through the head side of the top cover, thereby improving the effect of keeping the sleeper's head cool and the feet warm.

[0012] The present invention 3 The characteristic configuration includes a surrounding cover that surrounds the sleeping space and has an upper opening covered by the top cover, The upper end of the surrounding cover is positioned higher than at least a portion of the top cover, and a recess surrounded by the top cover and the upper end portion of the surrounding cover is formed as the first cold air reservoir.

[0013] According to this configuration, the upper end of the surrounding cover that surrounds the sleeping space is positioned higher than at least a portion of the top cover that covers the upper opening of the surrounding cover, so that a recess surrounded by the top cover and the upper end portion of the surrounding cover can be formed as a first cold air reservoir.

[0014] The present invention 4 The characteristic configuration is such that the top cover is surrounded by the surrounding cover, A high-level side and a low-level side that is lower than the high-level side, A hanging portion extending downward is provided on the lower side of the top cover, Between the hanging portion and the surrounding cover, a cooling air passage is provided which communicates with the first cold air reservoir and extends downward from the lower side. The area was surrounded by The difference is that a second cold air reservoir, which is a space, is formed.

[0015] According to this configuration, a second cold air reservoir is formed between the hanging part hanging from the lower side of the top cover and the surrounding cover, so that a part of the conditioned air that accumulates in the first cold air reservoir on the top cover can be accumulated in the second cold air reservoir. This allows the conditioned air that accumulates in the second cold air reservoir to pass through the air-permeable hanging part of the top cover and enter the space inside the canopy from the side, and together with the air-conditioned air entering from above, a large amount of conditioned air can be supplied to necessary locations such as the side of the sleeper's head. Furthermore, since heat is sufficiently transferred from the conditioned air accumulated in the second cold air reservoir to the hanging part of the top cover, the hanging part can be maintained at an appropriate temperature, and air conditioning by radiation from the hanging part can also be realized.

[0016] The present invention 5 The characteristic configuration is such that the top cover is surrounded by the surrounding cover, A high-level side and a low-level side that is lower than the high-level side, The surrounding cover has a specific surface connected to the higher side of the upper cover, which is made of a breathable sheet, and the surfaces other than the specific surface are made of non-breathable or poorly breathable sheets.

[0017] According to this configuration, since the specific surface of the surrounding cover is permeable and the other surfaces are non-permeable or poorly permeable, the conditioned air in the canopy interior space is discharged to the outside only from the specific surface of the surrounding cover. Therefore, the conditioned air that enters the canopy interior space mainly from the lower side of the upper cover can be made to flow throughout the canopy interior space toward the specific surface connected to the higher side of the upper cover, thereby suppressing air stagnation in the canopy interior space and improving comfort. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a perspective view showing a schematic configuration of a bed canopy according to an embodiment of the present invention; [Diagram 2] FIG. 2 shows the state of conditioned air supply to the bed canopy shown in FIG. 1. [Diagram 3] A diagram showing the top cover type A and type B [Figure 4] A diagram showing the top cover type C and type D [Diagram 5] A diagram showing the top cover type E and type F [Figure 6] Table showing the experimental results of Examples 1-9 and Comparative Example 1 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. The bed canopy 10 of this embodiment shown in Figures 1 and 2 is installed in a living room R where conditioned air A is blown out from above by an air conditioner 1, and is configured to have an upper cover 12 that covers the upper part of a sleeping space S, such as above a bed B. By installing such a bed canopy 10 in the sleeping space S and making the canopy inner space 10a formed within the bed canopy 10 into a space having the sleeping space S, the sleeping space S can be constructed as a personal space, giving the sleeper a sense of security and luxury.

[0020] At least a part of the top cover 12 is made of a breathable sheet such as a nonwoven fabric. With this configuration, the conditioned air A blown out from above in the living room R passes through the breathable sheet constituting the top cover 12 and enters the canopy interior space 10a. The conditioned air A that passes through the breathable sheet and enters the canopy interior space 10a is in a state in which drafts and sudden temperature fluctuations are suppressed, so the comfort of the sleeper in the canopy interior space 10a is maintained.

[0021] However, if most of the conditioned air A that reaches the breathable top cover 12 is dispersed to the surroundings immediately after colliding with the top cover 12, the entry state of the conditioned air A from the top cover 12 into the canopy interior space 10a becomes unstable, and the comfort of the sleeper cannot be sufficiently improved. Therefore, the bed canopy 10 of this embodiment has a characteristic configuration for improving the comfort of a sleeper in the canopy inner space 10a, and the details thereof will be described below.

[0022] A first cold air pool X1, which is a recess, is formed on the top cover 12 of the bed canopy 10. Since such a first cold air pool X1 exists as a recess on the top cover 12, the conditioned air A that is blown out from the air conditioner 1 and reaches the first cold air pool X1 on the top cover 12 temporarily stays in the first cold air pool X1. Then, the conditioned air A temporarily stagnating in the first cold air reservoir X1 on the top cover 12 passes through the top cover 12 stably throughout the entire top cover 12 and enters the canopy interior space 10a from above. Thus, in the canopy interior space 10a, an appropriate amount of conditioned air A is supplied from above over a wide area, realizing comfortable air conditioning with an appropriate airflow. Furthermore, heat is sufficiently transferred from the conditioned air A stored in the first cold air reservoir X1 to the top cover 12. Thus, the top cover 12 is maintained at an appropriate temperature, appropriately blocking radiant heat from the building structure to the canopy interior space 10a, and air conditioning by radiation from the top cover 12 is also realized.

[0023] The bed canopy 10 of this embodiment is provided with a surrounding cover 14. This surrounding cover 14 surrounds the periphery of the sleeping space S, and has an upper opening covered by the top cover 12. Furthermore, the upper end 14a of the surrounding cover 14 surrounding the periphery of the sleeping space S is located above at least a part of the top cover 12 covering the upper opening of the surrounding cover 14. With this configuration, a recess surrounded by the top cover 12 and the part of the surrounding cover 14 on the side of the upper end 14a is formed as the first cold air reservoir X1 described above.

[0024] The surrounding cover 14 is composed of a foot side surrounding cover part 14A and a head side surrounding cover part 14B arranged opposite to each other, and a side side surrounding cover part 14C arranged opposite to each other, and is formed by arranging the foot side surrounding cover part 14A, the head side surrounding cover part 14B, and the side side surrounding cover part 14C in a rectangular tubular shape in a plan view. The foot side surrounding cover part 14A is a flat sheet part erected on the foot side Sa of the sleeping person in the sleeping space S, the head side surrounding cover part 14B is a flat sheet part erected on the head side Sb of the sleeping person in the sleeping space S, and the side side surrounding cover parts 14C are flat sheet parts erected on both sides of the sleeping person in the sleeping space S.

[0025] In the bed canopy 10 of this embodiment, the upper cover portion 12A, which is a planar portion of the upper cover 12 that covers the upper side of the sleeping space S, is arranged in an inclined position relative to the horizontal plane, specifically, in a position inclined with the head side Sb lower than the foot side Sa. Since the top cover part 12A is provided in such an inclined position, the first cold air pool X1 formed on the top cover part 12A is a recessed portion having a deeper head side Sb than foot side Sa. Thus, in the first cold air pool X1, more conditioned air A is pooled on the deeper lower side (head side Sb) of the top cover part 12A than on the shallower higher side (foot side Sa). The pooled conditioned air A actively passes through the lower side (head side Sb) of the top cover part 12A and enters the canopy inner space 10a, and the entered conditioned air A is supplied mainly to the head side Sb of the sleeper, improving the sleeper's effect of keeping the head cool and the feet warm.

[0026] In the bed canopy 10 of this embodiment, a hanging part 12B extending downward is provided on the lower side (head side Sb) of the top cover 12. That is, in the top cover 12, the top cover part 12A is provided in an inclined position descending from the foot side Sa to the head side Sb, and a flat breathable sheet part extending vertically from its lower end is provided as the hanging part 12B. The hanging part 12B is disposed inwardly and spaced apart from the head side surrounding cover part 14B of the surrounding cover 14, and a space extending downward from the head side Sb of the first cold air pool part X1 is formed between the hanging part 12B and the head side surrounding cover part 14B as the second cold air pool part X2. By forming such a second cold air pool X2, a part of the conditioned air A that accumulates in the first cold air pool X1 on the upper cover part 12A flows into the second cold air pool X2 at the head side Sb and accumulates in the second cold air pool X2. As a result, the conditioned air A that accumulates in the second cold air pool X2 passes through the hanging part 12B made of a breathable sheet and enters the canopy inner space 10a from the side. Therefore, in the canopy inner space 10a, the conditioned air A enters from the second cold air pool X2 on the head side together with the conditioned air A entering from the first cold air pool X1 above, so that a large amount of conditioned air A can be supplied to necessary places such as the head side Sb of the sleeper. Furthermore, heat is sufficiently transferred from the conditioned air A accumulated in the second cold air pool X2 to the hanging part 12B. Therefore, hanging portion 12B is maintained at an appropriate temperature, and air conditioning by radiation from hanging portion 12B is also achieved.

[0027] In the bed canopy 10 of this embodiment, in the surrounding cover 14, the foot side surrounding cover part 14A as a specific surface connected to the high side (foot side Sa) of the upper surface cover 12 is made of a breathable sheet having breathability such as nonwoven fabric. On the other hand, in the surrounding cover 14, the head side surrounding cover part 14B and the both side surrounding cover parts 14C other than the foot side surrounding cover part 14A are made of a non-breathable sheet having no breathability or a poorly breathable sheet having very little breathability. With this configuration, the conditioned air A in the canopy inner space 10a is discharged to the outside only from the foot side surrounding cover part 14A of the surrounding cover 14. Then, the conditioned air A that enters the canopy inner space 10a mainly from the low side (head side Sb) of the upper surface cover part 12A flows throughout the canopy inner space 10a toward the foot side surrounding cover part 14A connected to the high side (foot side Sa) of the upper surface cover part 12A. Therefore, air stagnation in the canopy inner space 10a is suppressed, improving comfort.

[0028] As the form of the upper cover 12 of the bed canopy 10, in addition to the above-mentioned forms, forms A to F as shown in Figures 3 to 5 can be adopted. The details will be described below.

[0029] (Top cover type A) Configuration A of the top cover 12 shown in FIG. 3(a) is the same configuration as the top cover 12 shown in FIGS. 1 and 2 described above. That is, in the form A of the top cover 12, a flat top cover part 12A is provided that is in an inclined position with the head side Sb lower than the foot side Sa (hereinafter, this inclined position is referred to as the "head-low, feet-high inclined position.") Then, a recess that is deeper on the head side Sb than the foot side Sa is formed on the entire top of the top cover part 12A as a first cool air reservoir part X1. Furthermore, the upper cover 12 of this form A has a hanging portion 12B, and between the hanging portion 12B and the head side surrounding cover portion 14B, a space extending downward from the head side Sb of the first cold air pool portion X1 is formed as a second cold air pool portion X2. In addition, in the top cover 12 of form A, the top cover portion 12A and the hanging portion 12B are entirely made of a breathable sheet.

[0030] (Top cover type B) In the form B of the top cover 12 shown in Fig. 3(b), a flat top cover part 12A is provided in a head-low, foot-high inclined position, as in the form A (see Fig. 3(a)). A recess that is deeper on the head side Sb than on the foot side Sa is formed on the entire top of the top cover part 12A as a first cool air reservoir part X1. Furthermore, the upper cover 12 of this embodiment B is not provided with the hanging portion and the second cold air reservoir portion as described above. In the top cover 12 of this form B, the entire top cover portion 12A is made of a breathable sheet.

[0031] (Top cover type C) 4(a), a top cover 12 of type C is provided with a flat top cover part 12A in an inclined position with the head side Sb higher than the foot side Sa (hereinafter, this inclined position will be referred to as the "head-high, feet-low inclined position.") A recess in which the foot side Sa is deeper than the head side Sb is formed as a first cool air reservoir X1 on the entire top of the top cover part 12A. Furthermore, the upper cover 12 of this form C is not provided with the hanging portion and the second cold air reservoir portion as described above. In the top cover 12 of form C, the entire top cover portion 12A is made of a breathable sheet.

[0032] (Top cover type D) 4(b), a flat top cover part 12A is provided in a horizontal position with the feet side Sa and the head side Sb at the same height. A first cool air reservoir X1 is formed as a recess whose depth does not change between the head side Sb and the feet side Sa over the entire top of the top cover part 12A. Furthermore, the upper cover 12 of this embodiment D is not provided with the hanging portion and the second cold air reservoir portion as described above. In the top cover 12 of this form D, the entire top cover portion 12A is made of a breathable sheet.

[0033] (Top cover type E) In the form E of the top cover 12 shown in Fig. 5(a), a flat top cover part 12A is provided in a head-low, foot-high inclined position, as in the form B (see Fig. 3(b)). A recess that is deeper on the head side Sb than on the foot side Sa is formed on the entire top of the top cover part 12A as a first cool air reservoir part X1. Furthermore, the upper cover 12 of this form E is not provided with the hanging portion and the second cold air reservoir portion as described above. In addition, in the top cover 12 of form E, the head side top cover part 12Ab, which is the head side Sb part of the top cover part 12A, is made of a breathable sheet, and the other part, the foot side Sa part, which is the foot side top cover part 12Aa, is made of a non-breathable sheet or a poorly breathable sheet.

[0034] (Top cover type F) In the form F of the top cover 12 shown in FIG. 5(b), a stepped top cover part 12A is provided. That is, in this top cover part 12A, the foot side top cover part 12Aa, which is the part on the foot side Sa, is in a horizontal position at the same height as the upper end 14a of the surrounding cover 14. On the other hand, the head side top cover part 12Ab, which is the part on the head side Sb other than the foot side top cover part 12Aa, is in a horizontal position at a lower position than the foot side top cover part 12Aa. Furthermore, the foot side top cover part 12Aa and the head side top cover part 12Ab in the horizontal position are connected by a connecting part 12Ac in a vertical position. Then, a first cold air reservoir part X1 whose depth does not change is formed only on the head side top cover part 12Ab of the top cover part 12A. Furthermore, the top cover 12 of this form F is not provided with the hanging portion and the second cold air reservoir portion as described above. In addition, in the top cover 12 of this form F, the head side top cover portion 12Ab and the connection portion 12Ac are made of breathable sheets, and the remaining part, the foot side top cover portion 12Aa, is made of a non-breathable sheet or a poorly breathable sheet.

[0035] [Experimental Example] Next, experimental examples carried out using prototypes of bed canopies according to Examples 1 to 9 and Comparative Example 1 will be described. In this experimental example, an air conditioner that blows conditioned air at a predetermined blowing angle α (see FIG. 2) onto various bed canopy prototypes was operated continuously for a predetermined period of time in cooling mode with a set temperature of 26°C, and the air temperature, head-side radiant temperature, carbon dioxide concentration, and head-side wind speed were measured and evaluated. The experimental results are shown in FIG. 6. First, the evaluation methods for the experimental results shown in FIG. 6 will be explained.

[0036] In the experimental results shown in Figure 6, the air temperature condition was evaluated by calculating the temperature difference between the average air temperature measured at multiple points on the head side and the average air temperature measured at multiple points on the foot side in the space inside the canopy, and if the temperature difference was less than 0.5°C, it was evaluated as "○", and if it was 0.5°C or more, it was evaluated as "△". In other words, it can be said that the effect of keeping the head cool and the feet warm is improved when the air temperature condition is evaluated as "○" compared to "△".

[0037] In the experimental results shown in Figure 6, the head-side radiant temperature condition was evaluated by finding the temperature difference between the average radiant temperature (globe temperature) measured at multiple points on the head side in the space inside the canopy and the average air temperature measured at multiple points on the head side, and if the temperature difference was 0.5°C or more, it was evaluated as "○", and if it was less than 0.5°C, it was evaluated as "△". In other words, in evaluating the head-side radiant temperature condition, it can be said that the cooling effect on the head side due to radiation from the top cover cooled by conditioned air is greater when it is "○" than when it is "△".

[0038] In the experimental results shown in Figure 6, the carbon dioxide (CO2) concentration state was evaluated by calculating the difference in concentration between the carbon dioxide concentration measured in the room outside the bed canopy and the carbon dioxide concentration measured in the space inside the canopy, and if the difference in concentration was between 0 ppm or more and less than 100 ppm, it was evaluated as "○", if it was between 100 ppm or more and less than 200 ppm, it was evaluated as "△", and if it was 200 ppm or more, it was evaluated as "×". In other words, it can be said that less carbon dioxide is retained in the bed canopy in the "△" case than in the "×" case, and in the "○" case than in the "△" case.

[0039] In the experimental results shown in Figure 6, the head-side wind speed condition was evaluated by determining the average and maximum wind speeds measured at multiple locations on the head side in the canopy space, and judging whether the average wind speed was 0.2 m / s or less and whether the maximum wind speed was 0.4 m / s or less. If both were true, it was rated as "○", if only one was true, it was rated as "△", and if neither was true, it was rated as "×". In other words, it can be said that the sleeper feels less of a draft on the head side when the head-side wind speed condition is evaluated as "△" than when it is "×", and when it is evaluated as "○" than when it is "△".

[0040] Next, the configurations of the prototypes of the bed canopies of Comparative Example 1 and Examples 1 to 9 used in this experiment and the evaluation results thereof will be described.

[0041] Comparative Example 1 The bed canopy of Comparative Example 1 did not have an upper cover. In this Comparative Example 1, the conditioned air blowing angle α was set to 45°.

[0042] In this experiment, in Comparative Example 1, as shown in FIG. 6, the air temperature condition was evaluated as "△", the head-side radiant temperature condition was evaluated as "△", the carbon dioxide concentration condition was evaluated as "○", and the head-side wind speed condition was evaluated as "X".

[0043] Example 1 The bed canopy of Example 1 employed the above-mentioned form C (see FIG. 4(a)) as the form of the upper cover, which has the head-high, foot-low inclined position and has no hanging part. The breathable sheet used in the ventilation part of the upper cover was a high-opening ratio breathable sheet (hereinafter referred to as "high-opening ratio breathable sheet") with openings of about 0.36 mm width formed at an opening ratio of about 32%. In this Example 1, the conditioned air blowing angle α was set to 45°.

[0044] In this experiment, in this Example 1, as shown in FIG. 6, the air temperature condition was evaluated as "○", the head-side radiant temperature condition was evaluated as "△", the carbon dioxide concentration condition was evaluated as "△", and the head-side wind speed condition was evaluated as "X".

[0045] From the evaluation results, in terms of air temperature conditions, the bed canopy of this embodiment 1 having an upper cover of type C, which uses a high opening ratio breathable sheet and has an upper cover part in an inclined position with the head positioned high and the feet positioned low, received a higher evaluation for the air temperature conditions compared to the above-mentioned comparison example 1 which does not have an upper cover, and it can be seen that the effect of keeping the head cool and the feet warm is improved by providing such an upper cover and forming the first cold air pool portion X1.

[0046] Example 2 The bed canopy of Example 2, like Example 1, employs the above-mentioned form C (see FIG. 4(a)) as the form of the upper cover, with the head-high, feet-low inclined position described above and no hanging portion. The breathable sheet used in the ventilation part of the upper cover was a medium-opening ratio breathable sheet (hereinafter referred to as "medium-opening ratio breathable sheet") with openings of about 1.6 mm width formed at an opening ratio of 26%. In this Example 2, the conditioned air blowing angle α was set to 45°.

[0047] In this experiment, in Example 2, as shown in FIG. 6, the air temperature condition was evaluated as "△", the head-side radiant temperature condition was evaluated as "△", the carbon dioxide concentration condition was evaluated as "○", and the head-side wind speed condition was evaluated as "△".

[0048] From these evaluation results, it can be seen that, in terms of the state of carbon dioxide concentration, the bed canopy of this Example 2 having an upper cover of Form C, which uses a medium opening ratio breathable sheet and has an upper cover part in an inclined position with the head positioned high and the feet positioned low, was evaluated as having the same carbon dioxide concentration state as comparison example 1 which did not have an upper cover, and therefore even when such an upper cover is provided, there is little retention of carbon dioxide within the bed canopy.

[0049] In addition, with regard to the state of wind speed on the head side, the bed canopy of this embodiment 2 having an upper cover of type C, which uses a medium opening ratio breathable sheet and has an upper cover part in an inclined position with the head positioned high and the feet positioned low, was rated higher for the state of wind speed on the head side compared to the above comparison example 1 which did not have an upper cover, and it can be seen that by providing such an upper cover, the sleeper feels less of a draft on the head side.

[0050] Example 3 The bed canopy of Example 3, like that of Example 1, employs the above-mentioned form C (see FIG. 4(a)) as the form of the upper cover, with the head-high, feet-low inclined position described above and no hanging portion. The breathable sheet used in the ventilation part of the upper cover was a low-opening ratio breathable sheet (hereinafter referred to as "low-opening ratio breathable sheet") with openings of about 1.1 mm width formed at an opening ratio of 19%. In this Example 3, the conditioned air blowing angle α was set to 45°.

[0051] In this experiment, in Example 3, as shown in FIG. 6, the air temperature condition was evaluated as "○", the head-side radiant temperature condition was evaluated as "△", the carbon dioxide concentration condition was evaluated as "○", and the head-side wind speed condition was evaluated as "×".

[0052] From these evaluation results, in terms of air temperature conditions, the bed canopy of this embodiment 3 having an upper cover of type C, which uses a low opening ratio breathable sheet and has an upper cover part in an inclined position with the head positioned high and the feet positioned low, received a higher evaluation for the air temperature conditions compared to the above-mentioned comparison example 1 which does not have an upper cover, and it can be seen that the effect of keeping the head cool and the feet warm is improved by providing such an upper cover and forming the first cold air pool portion X1.

[0053] In addition, with regard to the state of carbon dioxide concentration, the bed canopy of this Example 2, which has an upper cover of type C using a low opening ratio breathable sheet and in which the upper cover part is in an inclined position with the head positioned high and the feet positioned low, was evaluated as having a similar state of carbon dioxide concentration compared to Comparative Example 1, which did not have an upper cover, and it can be seen that even when such an upper cover is provided, there is little retention of carbon dioxide within the bed canopy.

[0054] Furthermore, when comparing the above Examples 1 to 3 in which the upper cover is the same Form C and only the opening rate of the breathable sheet used in the ventilation section is different, it was confirmed that in terms of the evaluation of the carbon dioxide concentration state, when the opening rate of the breathable sheet used as the ventilation section of the upper cover is a medium opening rate (Example 2) or a low opening rate (Example 3), the difference in the carbon dioxide concentration inside the bed canopy compared to outside the bed canopy is lower compared to when the opening rate is high (Example 1), and less carbon dioxide remains inside the bed canopy.

[0055] Example 4 The bed canopy of Example 4 employed the above-mentioned form B (see FIG. 3(b)) as the form of the upper cover, which has the head-low, foot-high inclined position and no hanging part. The breathable sheet used in the ventilation portion of the upper cover was a high opening ratio breathable sheet, similar to the above-mentioned Example 1. In this Example 4, the conditioned air blowing angle α was set to 45°.

[0056] In this experiment, in Example 4, as shown in FIG. 6, the air temperature condition was evaluated as "○", the head-side radiant temperature condition was evaluated as "△", the carbon dioxide concentration condition was evaluated as "×", and the head-side wind speed condition was evaluated as "○".

[0057] From these evaluation results, in terms of air temperature conditions, the bed canopy of this Example 4, which has an upper cover of type B using a high opening ratio breathable sheet and in which the upper cover part has an inclined position with the head low and the feet high, received a higher evaluation for the air temperature conditions compared to the above-mentioned Comparative Example 1 which does not have an upper cover, and it can be seen that the effect of keeping the head cool and the feet warm is improved by providing such an upper cover and forming the first cold air pool portion X1.

[0058] In addition, the bed canopy of this embodiment 4, which uses a high opening ratio breathable sheet and has an upper cover of type B in which the upper cover part is in a head-low, foot-high inclined position, is evaluated highly for the state of head-side wind speed compared to Comparative Example 1, which does not have an upper cover, and it is understood that the provision of such an upper cover reduces the feeling of a draft on the head side of the sleeper. Furthermore, the bed canopy of this embodiment 4, which uses a high opening ratio breathable sheet and has an upper cover of type B in which the upper cover part is in a head-low, foot-high inclined position, is evaluated highly for the state of head-side wind speed compared to Example 1, which differs from this embodiment 4 only in that it has an upper cover of type C in which the upper cover part is in a head-high, foot-low inclined position, and it is understood that the sleeper reduces the feeling of a draft on the head side by having such an upper cover part in a head-low, foot-high inclined position rather than a head-high, foot-low inclined position.

[0059] Example 5 The bed canopy of Example 5, like that of Example 4, employs the above-mentioned form B (see FIG. 3(b)) as the form of the upper cover, which has the head-low, foot-high inclined position described above and has no hanging portion. The breathable sheet used in the ventilation portion of the upper cover was a medium opening ratio breathable sheet, similar to the above-mentioned Example 2. In this Example 5, the conditioned air blowing angle α was set to 45°.

[0060] In this experiment, in Example 5, as shown in FIG. 6, the air temperature condition was evaluated as "△", the head-side radiant temperature condition was evaluated as "○", the carbon dioxide concentration condition was evaluated as "○", and the head-side wind speed condition was evaluated as "○".

[0061] From these evaluation results, with regard to the state of the head-side radiant temperature, the bed canopy of this Example 5, which uses a medium opening ratio breathable sheet and has an upper cover of type B in which the upper cover part is in an inclined position with the head positioned low and the feet positioned high, was rated higher for the state of the head-side radiant temperature compared to Comparison Example 1, which has no upper cover, and Example 2, which differs from this Example 5 only in that it has an upper cover of type C in which the upper cover part is in an inclined position with the head positioned high and the feet positioned low. This shows that by providing such an upper cover and forming a first cold air pool, the cooling effect on the head side due to radiation from the upper cover is increased. Furthermore, the bed canopy of this Example 5, which uses a medium opening ratio breathable sheet and has an upper cover of Type B in which the upper cover part has a head-low, feet-high inclined position, is rated higher in terms of the head-side radiant temperature state than Example 2, which differs from this Example 5 only in that it has an upper cover of Type C in which the upper cover part has a head-high, feet-low inclined position. Therefore, it can be seen that by having such an upper cover part in a head-low, feet-high inclined position rather than a head-high, feet-low inclined position, the cooling effect on the head side by radiation from the upper cover is increased.

[0062] In addition, with regard to the state of carbon dioxide concentration, the bed canopy of this Example 5, which has an upper cover of type B using a medium opening ratio breathable sheet and in which the upper cover part is in an inclined position with the head low and the feet high, was evaluated as having the same carbon dioxide concentration state as comparison example 1, which did not have an upper cover, and it can be seen that even when such an upper cover is provided, there is little retention of carbon dioxide within the bed canopy.

[0063] In addition, the bed canopy of this embodiment 5, which uses a medium opening rate breathable sheet and has an upper cover of type B in which the upper cover part is in a head-low, foot-high inclined position, is evaluated highly for the state of head-side wind speed compared to Comparative Example 1, which does not have an upper cover, and it is understood that the provision of such an upper cover reduces the feeling of a draft on the head side of the sleeper. Furthermore, the bed canopy of this embodiment 5, which uses a medium opening rate breathable sheet and has an upper cover of type B in which the upper cover part is in a head-low, foot-high inclined position, is evaluated highly for the state of head-side wind speed compared to Example 2, which differs from this embodiment 5 only in that it has an upper cover of type C in which the upper cover part is in a head-high, foot-low inclined position, and it is understood that the sleeper reduces the feeling of a draft on the head side by having such an upper cover part in a head-low, foot-high inclined position rather than a head-high, foot-low inclined position.

[0064] Example 6 The bed canopy of Example 6, like that of Example 4, employs the above-mentioned form B (see FIG. 3(b)) as the form of the upper cover, which has the head-low, foot-high inclined position described above and has no hanging portion. The breathable sheet used in the ventilation portion of the upper cover was a low opening ratio breathable sheet, similar to the above-mentioned Example 3. In this Example 6, the conditioned air blowing angle α was set to 45°.

[0065] In this experiment, in Example 6, as shown in FIG. 6, the air temperature condition was evaluated as "△", the head-side radiant temperature condition was evaluated as "○", the carbon dioxide concentration condition was evaluated as "○", and the head-side wind speed condition was evaluated as "○".

[0066] From this evaluation result, the bed canopy of this Example 6, which uses a low-opening ratio breathable sheet and has an upper cover of type B in which the upper cover part is in a head-low, foot-high inclined position, is evaluated higher for the state of the head-side radiation temperature compared to Comparative Example 1, which does not have an upper cover, and therefore it is understood that the provision of such an upper cover and the formation of a first cold air pool improves the cooling effect on the head side due to radiation from the upper cover. Furthermore, the bed canopy of this Example 6, which uses a low-opening ratio breathable sheet and has an upper cover of type B in which the upper cover part is in a head-low, foot-high inclined position, is evaluated higher for the state of the head-side radiation temperature compared to Example 3, which differs from this Example 6 only in that it has an upper cover of type C in which the upper cover part is in a head-high, foot-low inclined position, and therefore it is understood that the cooling effect on the head side due to radiation from the upper cover is improved by making such an upper cover part in a head-low, foot-high inclined position rather than a head-high, foot-low inclined position.

[0067] In addition, with regard to the state of carbon dioxide concentration, the bed canopy of this Example 6, which has an upper cover of type B using a low opening ratio breathable sheet and in which the upper cover part is in an inclined position with the head lower and the feet higher, was evaluated as having the same carbon dioxide concentration state as comparison example 1, which did not have an upper cover, and it can be seen that even when such an upper cover is provided, there is little retention of carbon dioxide within the bed canopy.

[0068] In addition, the bed canopy of this embodiment 6, which uses a low-opening ratio breathable sheet and has an upper cover of type B in which the upper cover part is in a head-low, foot-high inclined position, is evaluated highly for the state of head-side wind speed compared to Comparative Example 1, which does not have an upper cover, and it is understood that the provision of such an upper cover reduces the feeling of a draft on the head side of the sleeper. Furthermore, the bed canopy of this embodiment 6, which uses a low-opening ratio breathable sheet and has an upper cover of type B in which the upper cover part is in a head-low, foot-high inclined position, is evaluated highly for the state of head-side wind speed compared to Example 3, which differs from this embodiment 6 only in that it has an upper cover of type C in which the upper cover part is in a head-high, foot-low inclined position, and it is understood that the sleeper reduces the feeling of a draft on the head side by having such an upper cover part in a head-low, foot-high inclined position rather than a head-high, foot-low inclined position.

[0069] Furthermore, when comparing the above Examples 4 to 6 in which the upper cover is the same form B and only the opening rate of the breathable sheet used in the ventilation section is different, it was confirmed that in terms of the evaluation of the carbon dioxide concentration state, when the opening rate of the breathable sheet used as the ventilation section of the upper cover is a medium opening rate (Example 5) or a low opening rate (Example 6), the difference in carbon dioxide concentration inside the bed canopy compared to outside the bed canopy is lower compared to when the opening rate is high (Example 4), and less carbon dioxide remains inside the bed canopy.

[0070] Example 7 The bed canopy of Example 7 employed the above-mentioned form D (see FIG. 4(b)) as the form of the top cover, which is in the above-mentioned horizontal position and has no hanging part. The breathable sheet used in the ventilation portion of the upper cover was a medium opening ratio breathable sheet, similar to the above-mentioned Example 2. In this Example 7, the conditioned air blowing angle α was set to 45°.

[0071] In this experiment, in Example 7, as shown in FIG. 6, the air temperature condition was evaluated as "△", the head-side radiant temperature condition was evaluated as "○", the carbon dioxide concentration condition was evaluated as "○", and the head-side wind speed condition was evaluated as "○".

[0072] From these evaluation results, in terms of the state of radiant temperature on the head side, the bed canopy of this Example 7, which has an upper cover of type D using a medium opening ratio breathable sheet and in which the upper cover portion is in a horizontal position, received a higher evaluation for the state of radiant temperature on the head side compared to Comparative Example 1, which does not have an upper cover, and therefore it can be seen that by providing such an upper cover and forming the first cold air pool portion, the cooling effect on the head side by radiation from the upper cover is increased.

[0073] In addition, with regard to the state of carbon dioxide concentration, the bed canopy of this Example 7, which has an upper cover of type D using a medium opening ratio breathable sheet and with the upper cover portion in a horizontal position, was evaluated as having the same carbon dioxide concentration state as comparison example 1, which did not have an upper cover, and it can be seen that even when such an upper cover is provided, there is little retention of carbon dioxide within the bed canopy.

[0074] In addition, with regard to the state of wind speed on the head side, the bed canopy of this Example 7, which has an upper cover of type D using a medium opening ratio breathable sheet and with the upper cover part in a horizontal position, received a higher evaluation for the state of wind speed on the head side compared to Comparative Example 1, which does not have an upper cover, and it can be seen that by providing such an upper cover, the sleeper feels less of a draft on the head side.

[0075] Example 8 The bed canopy of Example 8 employed the above-mentioned form A (see FIG. 3(a)) as the form of the upper cover, which has a hanging portion in the above-mentioned head-low, foot-high inclined position. The breathable sheet used in the ventilation part of the upper cover was a high opening ratio breathable sheet, as in the above-mentioned Example 1. In this Example 8, the conditioned air blowing angle α was set to 52°, different from the above-mentioned Examples 1 to 7. In this Example 8, the operating time of the air conditioner was made longer than in the above-mentioned Examples 1 to 7, and various conditions were evaluated.

[0076] In this experiment, in Example 8, as shown in FIG. 6, the air temperature condition was evaluated as "○", the head-side radiant temperature condition was evaluated as "△", the carbon dioxide concentration condition was evaluated as "△", and the head-side wind speed condition was evaluated as "△".

[0077] From these evaluation results, in terms of air temperature conditions, the bed canopy of this Example 8, which uses a high opening ratio breathable sheet and has an upper cover of type A in which the upper cover part is inclined with the head low and the feet high and has a hanging part, received a high evaluation for the air temperature conditions compared to the above-mentioned Comparative Example 1 which does not have an upper cover, and it can be seen that the effect of keeping the head cool and the feet warm is improved by providing such an upper cover and forming the first cold air pool portion X1.

[0078] In addition, with regard to the state of wind speed on the head side, the bed canopy of this Example 8, which uses a high opening ratio breathable sheet and has an upper cover of type A in which the upper cover part is inclined with the head lower and the feet higher and has a hanging part, was rated higher for the state of wind speed on the head side compared to Comparative Example 1 which does not have an upper cover, and it can be seen that by providing such an upper cover, the sleeper feels less of a draft on the head side.

[0079] Example 9 The bed canopy of Example 9, like that of Example 8, adopted the above-mentioned Form A (see FIG. 3(a)) as the form of the upper cover, with the head-low, feet-high inclined position described above and a hanging portion. The breathable sheet used in the ventilation portion of the upper cover was a medium opening ratio breathable sheet, as in the above-mentioned Example 2. In this Example 9, the conditioned air blowing angle α was set to 52°, unlike the above-mentioned Examples 1 to 7. In this Example 9, as in the above-mentioned Example 8, the operating time of the air conditioner was made longer than in the above-mentioned Examples 1 to 7, and various conditions were evaluated.

[0080] In this experiment, in Example 9, as shown in FIG. 6, the air temperature condition was evaluated as "○", the head-side radiant temperature condition was evaluated as "○", the carbon dioxide concentration condition was evaluated as "○", and the head-side wind speed condition was evaluated as "○".

[0081] From this evaluation result, the bed canopy of this embodiment 9, which uses a medium-high opening ratio breathable sheet, has an upper cover part in a head-low, foot-high inclined position, and has an upper cover of type A with a hanging part, is highly evaluated for the state of air temperature compared to the above-mentioned Comparative Example 1, which does not have an upper cover, and has an upper cover of type A with a hanging part, and has an air conditioning air blowing angle α of 52°, is highly evaluated for the state of air temperature compared to Example 5, which differs from this embodiment 9 only in that it has an upper cover of type B without a hanging part and that the air conditioning air blowing angle α is 45°, and has an upper cover of type B with a hanging part, and has an upper cover of type A with a hanging part, and has an air conditioning air blowing angle α of 52°, and has an upper cover of type B with a hanging part ...

[0082] In addition, the bed canopy of this embodiment 9, which uses a medium-high opening ratio breathable sheet, has an upper cover part in a head-low, foot-high inclined position, and has an upper cover of type A with a hanging part, is highly evaluated for the state of the head-side radiation temperature compared to Comparative Example 1, which does not have an upper cover, and has an upper cover of type A with a hanging part, and has a high evaluation for the state of the head-side radiation temperature, and thus it is understood that the cooling effect on the head side due to the radiation of the upper cover is enhanced by providing such an upper cover and forming a first cold air pool. Furthermore, the bed canopy of this embodiment 9, which uses a medium opening ratio breathable sheet, has an upper cover part in a head-low, foot-high inclined position, has an upper cover of type A with a hanging part, and has an air-conditioned air blowing angle α of 52°, is highly evaluated for the state of the head-side radiation temperature compared to Comparative Example 1, which does not have an upper cover, and Example 2, which differs from this embodiment 9 only in that it has an upper cover of type C without a hanging part and that the air-conditioned air blowing angle α is 45°, and thus it is understood that the cooling effect on the head side is enhanced by providing a hanging part in such an upper cover to form a second cold air pool and then adjusting the air-conditioned air blowing angle.

[0083] In addition, with regard to the state of carbon dioxide concentration, the bed canopy of this Example 9, which uses a medium-high opening ratio breathable sheet and has an upper cover of type A in which the upper cover part is in an inclined position with the head low and the feet high and has a hanging part, was evaluated as having the same carbon dioxide concentration state as comparison example 1 which did not have an upper cover, and it can be seen that even when such an upper cover is provided, there is little retention of carbon dioxide within the bed canopy.

[0084] In addition, the bed canopy of this embodiment 9, which uses a medium-high opening ratio breathable sheet, has an upper cover part in a head-low, foot-high inclined position, and has an upper cover of type A with a hanging part, is highly evaluated for the state of head-side wind speed compared to Comparative Example 1, which does not have an upper cover, and therefore it is understood that the provision of such an upper cover reduces the feeling of a draft on the head side of the sleeper. Furthermore, the bed canopy of this embodiment 9, which uses a medium opening ratio breathable sheet, has an upper cover part in a head-low, foot-high inclined position, has an upper cover of type A with a hanging part, and has an air-conditioned air blowing angle α of 52°, is highly evaluated for the state of head-side wind speed compared to Example 2, which differs from this embodiment 9 only in that it has an upper cover of type C without a hanging part and that the air-conditioned air blowing angle α is 45°, and therefore it is understood that the sleeper will feel less of a draft on the head side by providing a hanging part on such an upper cover to form a second cold air pool and then adjusting the air-conditioned air blowing angle.

[0085] Furthermore, when comparing the above Examples 8 and 9, in which the upper cover is the same form A and only the opening rate of the breathable sheet used in the ventilation section is different, it was confirmed that, in terms of the evaluation of the carbon dioxide concentration state, when the opening rate of the breathable sheet used as the ventilation section of the upper cover is a medium opening rate (Example 9), the difference in the carbon dioxide concentration inside the bed canopy compared to outside the bed canopy is lower compared to when the opening rate is a high opening rate (Example 8), and less carbon dioxide remains inside the bed canopy.

[0086] It was confirmed that the air temperature on the head side was higher than the air temperature in other parts in Examples 2 to 7 and 9, excluding Examples 1 and 8, and Comparative Example 1. This may be because the amount of heat generated by the sleeper's head is greater than that of other parts, causing the air temperature in the vicinity to rise. [Explanation of symbols]

[0087] 10 Bed Canopy 12 Top cover 12B Drooping part 14 Surrounding cover 14a top end A. Air-conditioned air B Bed R living room S Sleeping space Sa Foot side Sb head side X1 First cold air reservoir X2 Second cold air reservoir

Claims

1. An air conditioner is installed in a room where cold air, which is conditioned air that has been cooled, is blown out from above by an air conditioner performing cooling operation, A bed canopy having a top cover that covers the upper part of a sleeping space, The upper cover is made of a breathable sheet, A first cold air reservoir, which is an upward recess with an open top, is formed on the top cover; A bed canopy in which the top cover is provided in an inclined position inclined relative to a horizontal plane.

2. The air conditioner is installed in a room where cold air, which is conditioned air cooled by an air conditioner performing cooling operation, is blown out from above, A bed canopy having a top cover that covers the upper part of a sleeping space, The upper cover is made of a breathable sheet, A first cold air reservoir, which is an upward recess with an open top, is formed on the top cover; the top cover has a high side and a low side that is lower than the high side, A bed canopy in which the upper cover has a higher side positioned at the foot side of the sleeping space and a lower side positioned at the head side of the sleeping space.

3. a surrounding cover that surrounds the sleeping space and has an upper opening covered by the top cover; A bed canopy as described in claim 1 or 2, wherein the upper end of the surrounding cover is located above at least a portion of the top cover, and a recess surrounded by the top cover and the upper end portion of the surrounding cover is formed as the first cold air reservoir.

4. the top cover is surrounded by the surrounding cover and has a high side and a low side that is lower than the high side, A hanging portion extending downward is provided on the lower side of the top cover, A bed canopy as described in claim 3, wherein a second cold air pool portion is formed between the hanging portion and the surrounding cover, the second cold air pool portion being connected to the first cold air pool portion, extending downward from the lower side and being an enclosed space.

5. the top cover is surrounded by the surrounding cover and has a high side and a low side that is lower than the high side, A bed canopy as described in claim 3 or 4, wherein in the surrounding cover, a specific surface connected to the higher side of the upper cover is made of a breathable sheet, and surfaces other than the specific surface are made of non-breathable or poorly breathable sheets.

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