The Verification of the Duration of the Effects of Illuminance and Color Temperature on People’s Sense of Coolness and Warmth

The Verification of the Duration of the Effects of Illuminance and Color Temperature on People’s Sense of Coolness and Warmth

Yuka KAWAI^** , Keiko ONO^* , Yuya MAEDA^**, Kana KOBAYASHI^*, Erina MAKIHARA^*

(Received October 13, 2020)

We have been examining how the color temperature of the ceiling light affects people’s sense of coolness and warmth.

As a result of the verification, it was found that the color and illuminance of the ceiling light influenced the sense of coolness and warmth of people. This is assumed that the in-view environment changes due to the difference in the color and illuminance of the ceiling light, so the lighting environment in the field of view influences the sense of coolness and warmth of people. However, previous studies have not examined the effects of illuminance and color temperature on the coolness-warmth sensation after 20 minutes. Therefore, in this study, we examined the effects of both illuminance and color temperature on the coolness and warmth of the subjects after 20 minutes from the that they entered the room. The results showed that the coolness-warmth sensation was sustained both in summer and winter when there was a 2˃ C difference in room temperature.

Key words : ceiling light, room temperature, color temperatureɼa sense of coolness and warmth Ωʔϫʔυ: ఱҪর໌ɼࣨԹɼ৭Թ౓ɼྋஆײ

র໌ͷর౓ɾ৭Թ౓͕ਓͷྋஆײʹ༩͑ΔӨڹͷޮՌ࣋ଓͷݕূ

઒߹ ༝Ն, খ໺ ܠࢠ, લా ါ࠸, খྛ Ճಸ, ᴳݪ ֆཬಸ

1. ͸͡Ίʹ

ۙ೥ɼࣨ಺؀ڥΛվળ͢Δ͜ͱΛ໨ඪʹɼ༷ʑͳݚ ڀ͕ߦΘΕ͍ͯΔɽਓʹ͸ޒײͱݺ͹ΕΔࢹ֮ɼௌ֮ɼ ຯ֮ɼᄿ֮ɼ৮֮ͱ͍͏ײ͕֮͋Δ¹⁾ɽͦͷதͰ΋ࢹ֮

͸ਓ͕पғ͔ΒಘΔ৘ใͷ80%Ҏ্Λ઎Ί͍ͯΔ²⁾ɽ

ࣨ಺؀ڥʹ͓͍ͯɼਓ͕ࢹ͔֮ΒӨڹΛड͚Δ΋ͷͱ

ͯ͠ɼর໌͕ڍ͛ΒΕΔɽর໌͸໌Δ͞΍৭ͷҧ͍ʹ ΑͬͯɼۭؒશମͷงғؾΛมԽͤ͞ɼࣨ಺ͷҹ৅ʹ ӨڹΛ༩͑ΔɽੴҪΒ͸র໌ʹؔ͢Δݚڀͱͯ͠ɼর

໌ͷ໌Δ͞΍৭͕ਓͷײ͡Δॵ͞΍פ͞ʹ༩͑ΔӨڹ ʹ͍࣮ͭͯݧΛߦͬͨ³⁾ ɽ͜ͷ݁Ռɼਓ͸র໌͕҉

͍΄Ͳפ͘ɼ໌Δ͍΄Ͳॵ͘ײ͡Δ͜ͱ͕ใࠂ͞Εͯ

͍Δɽ৭Թ౓ʹؔͯ͠͸ɼਓ͸ஆ৭ܥͷর໌ͷͱ͖ॵ

͘ʢஆ͔͘ʣɼפ৭ܥͷর໌ͷͱ͖פ͘ʢྋ͘͠ʣײ͡

Δ͜ͱ͕ใࠂ͞Ε͍ͯΔɽ·ͨɼBennett & Rey͸੺

Λओମͱͨ͠؀ڥͰ͸ਓ͸ஆ͔͘ײ͡ΒΕɼ੨Λओମ ͱͨ͠؀ڥͰ͸ྋ͘͠ײ͡Δhue-heatԾઆΛఏএ͠

ͨ⁴⁾ɽੴҪΒͷݚڀ͸hue-heatԾઆͷݕূʹ΋ͳͬ

* Faculty of Science and Engineering, Doshisha University, Kyoto

Telephone:+81-774-65-6930, Fax:+81-774-65-6716, E-mail:[email protected]

** Graduate School of Science and Engineering, Doshisha University, Kyoto

Telephone:+81-90-4214-9852, Fax:+81-790-45-0043, E-mail:[email protected]

͍ͯΔɽ

Ҏ্ͷ͜ͱ͔Βɼর໌ͷ໌Δ͞ͱ৭ͷࠩ͸ɼྋ͠͞

΍ஆ͔͞ͷࢦඪͰ͋ΔྋஆײʹӨڹΛ༩͍͑ͯΔͱߟ

͑ΒΕΔɽ͔͠͠ɼੴҪΒͷݚڀͰ͸ɼྋஆײ΁ͷӨڹ

͕Ͳͷఔ౓ͷࣨԹࠩʹ૬౰͢Δ͔͸໌Β͔ʹͳ͍ͬͯ

ͳ͍ɽΑͬͯզʑͷݚڀࣨͰ͸Ұࡢ೥౓ʹɼর໌ͷ໌

Δ͞ͱ৭ͷ͕ࠩྋஆײʹͲͷఔ౓ͷӨڹΛ༩͑Δ͔ͷ ݕূΛՆقͷྫྷ๪࣌ͱౙقͷஆ๪࣌ʹ͓͍ͯߦͬͨɽ

ͦͷ࣮ݧʹΑΓɼՆقྫྷ๪࣌ͱౙقஆ๪࣌ͷͲͪΒʹ

͓͍ͯ΋ɼর໌ͷޮՌʹΑΓࣨԹ͕2ˆࠩ͋Δ2෦԰

͕ಉఔ౓ͷྋஆײͱͳΔͱ͍͏݁Ռ͕ಘΒΕͨɽ Αͬͯ͜ΕΒͷ݁Ռ͔Βɼর໌ͷ໌Δ͞ͱ৭ͷࠩͷ

྆ํ͕ྋஆײʹ༩͑ΔӨڹ͸ࣨԹ2 ˆࠩఔ౓Ͱ͋Δ

͜ͱ͕෼͔ͬͨɽ͔͠͠ɼ͜Ε͸࣮ݧ։͔࢝Β20෼ ܦա࣌ͷݕূ݁ՌͰ͋Γɼ20෼Ҏ߱ʹ͓͚Δর໌ͷ

໌Δ͞ͱ৭ͷࠩͷ྆ํ͕ྋஆײʹ༩͑ΔӨڹʹ͍ͭͯ

͸ݕূΛߦ͍ͬͯͳ͍ɽΑͬͯɼຊߘͰ͸ɼ࣮ݧࣨʹ

ೖ͔ࣨͯ͠Β20෼Ҏ্ܦաͨ͠ͱ͖ʹ͓͚Δর໌ͷ র౓ͱ৭Թ౓ͷࠩͷ྆ํ͕ྋஆײʹ༩͑ΔӨڹΛݕূ

͢Δɽ

2. র໌ͱྋஆײʹؔ͢Δ࣮ݧͷ֓ཁ

2.1 ࣮ݧ಺༰

ੴҪΒͷݚڀʹ͓͍ͯɼ࣮ݧࣨ͸1෦԰Ͱ͋ͬͨɽ

ͦͷͨΊɼඃݧऀ͕̍౓ͷ࣮ݧͰҟͳΔࣨ಺Λମݧ͢

Δ͜ͱ͕Ͱ͖ͣɼর໌ͷ໌Δ͞΍৭ɼࣨԹ͕ҟͳΔ2 छྨͷ؀ڥΛൺֱ͢Δ͜ͱ͕ࠔ೉Ͱ͋ͬͨɽͦ͜Ͱɼ

࣮ݧࣨΛ2෦԰༻ҙ͠ɼඃݧऀʹর໌ͷর౓΍৭Թ౓ɼ

ࣨԹ͕ҟͳΔ؀ڥΛ1౓ͷ࣮ݧͰମݧͤ͞Δɽ͜Εʹ ΑΓɼর໌ͷর౓΍৭Թ౓ɼࣨԹ͕ҟͳΔ2छྨͷ؀

ڥΛൺֱ͠ɼධՁ͢Δ͜ͱ͕Ͱ͖Δɽࡢ೥౓ߦ࣮ͬͨ

ݧʹΑΓɼর໌ͷর౓ͱ৭Թ౓ͷࠩͷ྆ํ͕ྋஆײʹ ༩͑ΔӨڹ͸20෼ܦա࣌ʹ͓͍ͯࣨԹ2ˆఔ౓Ͱ͋

Δ͜ͱ͕෼͔͕ͬͨɼ20෼Ҏ߱ʹ͓͍ͯӨڹ͕͋Δ͔

͸෼͔͍ͬͯͳ͍ɽ΋͠ɼ20෼Ҏ߱ʹ͓͚Δর໌ͷর

౓ͱ৭Թ౓ͷࠩͷ྆ํ͕ྋஆײʹ༩͑ΔӨڹ͕ͳ͍৔

߹ɼྋஆײΛҡ࣋͢ΔͨΊʹ͸ɼௐޫௐ৭Մೳͳর໌

Ͱదٓর໌ͷর౓ͱ৭Թ౓Λมߋ͢Δඞཁ͕͋Δɽ͠

͔͠ɼௐޫௐ৭Մೳͳর໌Λಋೖ͍ͯ͠Δ؀ڥ͸গͳ

Table 1. Experimental items and number of subjects.

Experimental item Male Female ʢaʣ 8 8 ʢbʣ 4 3

͘ɼর໌ͷ໌Δ͞΍৭Λదٓมߋ͢Δ͜ͱ͸೉͍͠ɽ

ͦ͜ͰɼຊݚڀͰর໌ͷ໌Δ͞ͱ৭ͷࠩͷ྆ํ͕ྋ ஆײʹ༩͑ΔӨڹͷ࣋ଓ࣌ؒΛݕূ͠ɼ௕࣌ؒӨڹ͕

࣋ଓ͢Δ͜ͱ͕Θ͔Ε͹ɼقઅʹΑͬͯܬޫ౮Λ෇͚

ସ͑Δ౳Λ͢Δ͜ͱʹΑͬͯɼௐޫௐ৭Մೳͳর໌͕

ͳ͍؀ڥʹ͓͍ͯ΋ྋஆײΛҡ࣋͢Δ͜ͱ͕Ͱ͖Δɽ

2.2 ࣮ݧ߲໨

ຊݚڀͰߦ͏ྋஆײʹ͓͚Δ࣮ݧ߲໨ΛҎԼʹࣔ͢

ͱͱ΋ʹ࣮ݧ͝ͱͷඃݧऀ਺ΛTable 1ʹࣔ͢ɽશͯ

ͷ࣮ݧʹ͓͚Δඃݧऀͷ߹ܭ͸Ԇ΂23໊Ͱ͋ͬͨɽ ʢaʣՆقྫྷ๪࣌ʹ͓͚Δর౓ɾ৭Թ౓ͷ͕ࠩྋஆײ ʹ༩͑ΔӨڹͷ࣋ଓݕূ࣮ݧ

ʢbʣౙقஆ๪࣌ʹ͓͚Δর౓ɾ৭Թ౓ͷ͕ࠩྋஆײ ʹ༩͑ΔӨڹͷ࣋ଓݕূ࣮ݧ

ҎԼʹ֤࣮ݧ߲໨ʹ͍ͭͯ୺తʹड़΂Δɽʢaʣ͸Նق

ྫྷ๪࣌ʹ͓͍ͯɼʢbʣ͸ౙقஆ๪࣌ʹ͓͍ͯɼর౓ɾ ৭Թ౓ͷࠩʹΑΔྋஆײʹ༩͑ΔӨڹͷ࣋ଓ࣌ؒΛ໌

Β͔ʹ͢Δɽ࣮ݧͷৄࡉʹ͍ͭͯɼʢaʣ͸3ষɼʢbʣ

͸4ষͰͦΕͧΕड़΂Δɽ

2.3 ࣮ݧ؀ڥ

࣮ݧ؀ڥΛFig.1ʹࣔ͢ɽ࣮ݧ͸ɼ͚͍͸ΜͳΦʔ ϓϯΠϊϕʔγϣϯηϯλʔ಺ͷ࣮ݧࣨɼϝλίϯ ϑΥʔτɾϥϘͰߦͬͨɽԹ࣪౓੍ޚʹ͸᫔ࣹۭௐΛ

༻͍ͨɽҰൠతʹ༻͍ΒΕΔۭௐ͸ۭؾͷରྲྀʹΑΓ Թ౓ௐ੔Λߦ͏ରྲྀۭௐͰ͋Δɽ͔͠͠ɼରྲྀۭௐͰ

͸চԼͱਧ͖ग़͠ޱͰࣨԹ͕ࠩੜ͡ɼԹ౓Ϝϥ͕ى͖

Δ໰୊͕͋Δ⁵⁾ɽͦΕʹରͯ͠ɼ᫔ࣹۭௐ͸ରྲྀۭௐ ͱҟͳΓɼ᫔ࣹ೤ͷҠಈʹΑΓ෦԰શମͷԹ౓Λௐ੔

͢ΔɽͦͷͨΊɼ᫔ࣹۭௐ͸ରྲྀۭௐͱҟͳΓɼԹ౓

Ϝϥ͕ੜ͡ʹ͍͘⁶⁾ɽ

ࣨԹ͸Թ౓ޡࠩ±0.3 ˆɼ࣪౓ޡࠩ±0.25%ͷԹ࣪

౓ܭʹΑΓܭଌͨ͠ɽࣨԹ͸Նقྫྷ๪࣌ʹ͓͍ͯ͸25 ˆ͔Β27ˆͷൣғͰɼౙقྫྷ๪࣌ʹ͓͍ͯ͸22ˆ

͔Β24ˆͷൣғͰ࣮ݧΛߦͬͨɽ

Waiting Room

5.5 5.5

5.5

5.5

[m]

Room1 Room2

Air Conditioning Desk Ceiling Light

Fig. 1. Experimental environment.

ɹ

Sense coolnessof

Neither Slightly

Slightly Considerably

Considerably

Sense warmthof

Fig. 2. Rating scale.

র໌ʹ͸র౓ɾ৭Թ౓ΛมߋͰ͖ΔLEDর໌Λ༻

͍ͨɽর౓͸ޫʹরΒ͞Εͨ໘ͷ໌Δ͞Ͱ͋Γɼ୯Ґ

͸lxʢϧΫεʣΛ༻͍Δɽ৭Թ౓͸ޫͷ৭Ͱ͋Γɼ஋

͕େ͖͍΄Ͳפ৭ʹɼখ͍͞΄Ͳஆ৭ʹͳΔɽ୯Ґ͸

KʢέϧϏϯʣΛ༻͍Δɽর౓͸௿র౓৚݅ͱͯ͠300

lxɼߴর౓৚݅ͱͯ͠800 lxͰ࣮ݧΛߦͬͨɽ৭Թ౓

͸௿৭Թ౓৚݅ͱͯ͠3000 Kɼߴ৭Թ౓৚݅ͱͯ͠

5500 KͰ࣮ݧΛߦͬͨɽ

࣮ݧ࣌ͷҥ෰͸ඃݧऀ͕ීஈ͔Βண༻͍ͯ͠Δ΋ͷ ͱͨ͠ɽ͜Ε͸ɼීஈͱҟͳΔҥ෰Λඃݧऀʹண༻͞

ͤΔ͜ͱͰɼྋஆײʹର͢Δ൑அ͕ීஈͱҟͳͬͯ͠

·͏͜ͱΛ๷͙ͨΊͰ͋Δɽ·ͨɼྋஆײʹؔ͢Δධ

Ձ͸Fig.2ʹࣔ͢ධఆई౓Λ༻͍ɼ7ஈ֊ͰධՁͤ͞

ͨɽධఆई౓͸౷ܭղੳΛߦ͏ࡍɼ1͔Β7ͷִؒई

౓ͱͯ͠औΓѻͬͨɽ࣮ݧ͸ʢaʣΛ2018೥7݄30

೔͔Β8݄22೔ʹ࣮ࢪ͠ɼʢbʣΛ2018೥12݄3೔

͔Β2019೥1݄6೔ʹ࣮ࢪͨ͠ɽ

2.4 ࣮ݧखॱ

ඃݧऀ࣮ݧͷखॱΛҎԼʹࣔ͢ɽ ʢ1ʣԹ࣪౓ॱԠʢ30෼ؒʣ ʢ2ʣ࣮ݧࣨ1΁Ҡಈ

ʢ3ʣΞϯέʔτʢ5෼ຖʹ20෼ؒʣ ʢ4ʣ࣮ݧࣨ2΁Ҡಈ

ʢ5ʣΞϯέʔτʢ5෼ຖʹ90෼ؒʣ

Fig. 3. An example of a sustainability assessment of the effect on sense of coolness and warmth.

·ͣɼඃݧऀ͸଴ػࣨ಺Ͱ30෼ؒҜࢠʹண੮͠ɼ҆

੩ͳঢ়ଶͰԹ࣪౓ॱԠΛߦ͏ɽ30෼ܦաޙʹඃݧऀ

͸࣮ݧࣨ1ʹೖΓɼ20෼ؒ଺ࡏ͢Δɽͦͷؒɼ5෼ຖ ͷΞϯέʔτ΁ͷճ౴ͱॻ੶ͷ໧ಡΛߦ͏ɽΞϯέʔ τͰ͸ɼྋஆײʹ͍ͭͯ7ஈ֊Ͱճ౴͢Δɽ20෼ܦ աޙɼඃݧऀ͸࣮ݧࣨ2ʹҠಈ͠ɼ࣮ݧࣨ1ͱಉ༷ʹ Ξϯέʔτ΁ͷճ౴ͱॻ੶ͷ໧ಡΛ90෼ؒߦ͏ɽҎ

্ͷʢ1ʣ͔Βʢ5ʣ·ͰͷྲྀΕͰɼʢaʣͱʢbʣͷ࣮

ݧΛߦ͏ɽ

2.5 র౓ɾ৭Թ౓ͷ͕ࠩྋஆײʹ༩͑ΔӨڹͷ

࣋ଓੑධՁ

ຊ࣮ݧͰ͸ɼর౓ɾ৭Թ౓ͷࠩʹΑΔྋஆײ΁ͷӨ ڹ͕࣋ଓ͍ͯ͠Δ͔Λ૬ؔ܎਺Λ༻͍Δख๏ͰධՁ͢

ΔɽධՁखॱ͸ҎԼͷ௨ΓͰ͋Δɽ

(1) ࣋ଓੑݕূ࣮ݧͰ90෼ؒ଺ࡏ࣮ͨ͠ݧࣨʹ͓͚

ΔશඃݧऀͷΞϯέʔτ݁Ռʹ͍ͭͯ૬ؔ܎਺R Λࢉग़

(2) ૬ؔ܎਺Rʹ͍ͭͯݕఆΛ࣮ࢪ

(3) ݕఆ݁ՌΑΓɼʮਖ਼ͷ૬͕ؔ͋Δʯɼʮෛͷ૬͕ؔ͋

Δʯɼʮ૬͕ؔͳ͍ʯͷ3۠෼ʹධՁ

্هͷධՁखॱͰධՁͨ͠ධՁྫΛFig.3ʹࣔ͢ɽ͜

ΕΒͷධՁ͸ɼྋஆײ͕࣌ؒܦաʹΑͬͯͲͷΑ͏ʹ มԽ͢Δͷ͔Λ͍ࣔͯ͠Δɽ3ධՁ͕ࣔ͢ྋஆײͷม Խ͸Լهͷ௨ΓͰ͋Δɽ

• ਖ਼ͷ૬ؔ͋Γɿ࣌ؒܦաͰঃʑʹஆ͔͘ײ͡Δ

• ෛͷ૬ؔ͋Γɿ࣌ؒܦաͰঃʑʹྋ͘͠ײ͡Δ

• ૬ؔͳ͠ɹɹɿྋஆײ͸Ұఆ

ຊ࣮ݧ͸র౓ɾ৭Թ౓ͷ͕ࠩྋஆײʹ༩͑ΔӨڹͷ

࣋ଓ࣌ؒΛݕূ͢Δ͜ͱ͕໨తͰ͋ΔͨΊɼͦΕͧΕ Նقྫྷ๪࣌ʹ͓͍ͯ͸ʮෛͷ૬ؔ͋Γʯͱʮ૬ؔͳ͠ʯ ͷ৔߹Ͱর౓ɾ৭Թ౓ͷࠩʹΑΔྋஆײ΁ͷӨڹ͸࣋

ଓ͍ͯ͠Δͱ൑அ͢Δɽ·ͨɼౙقྫྷ๪࣌ʹ͓͍ͯ͸

ʮਖ਼ͷ૬ؔ͋Γʯͱʮ૬ؔͳ͠ʯͷ৔߹Ͱɼর౓ɾ৭ Թ౓ͷࠩʹΑΔྋஆײ΁ͷӨڹ͸࣋ଓ͍ͯ͠Δͱ൑அ

͢Δɽ

༗ҙࠩͷݕఆʹ͸ϐΞιϯͷੵ཰૬ؔ܎਺ͷ༗ҙੑ

ݕఆΛ༻͍ͨɽ͜ͷݕఆ͸૬ؔ܎਺R͕ແ૬ؔͰͳ

͍͜ͱΛݕఆ͢Δݕఆख๏Ͱ͋Δɽݕఆ͍ͨ͠૬ؔ܎

਺ͷઈର஋ͱඪຊ૬ؔ܎਺Λൺֱ͠ɼඪຊ૬ؔ܎਺ͷ

ํ͕஋͕େ͖͚Ε͹૬ؔͳ͠ɼඪຊ૬ؔ܎਺ͷํ͕஋

͕খ͚͞Ε͹૬ؔ͋ΓͰ͋Δɽඪຊ૬ؔ܎਺ͷࢉग़ࣜ

Λࣜ(1)ʹࣔ͢ɽ͜͜Ͱɼr͸ඪຊ૬ؔ܎਺ɼn͸αϯ ϓϧαΠζɼt͸t෼෍ͷύʔηϯτ఺Λࣔ͢ɽt෼෍

ͷύʔηϯτ఺ͷ਺஋ʹΑͬͯ৴པ۠ؒΛมߋ͢Δ͜

ͱ͕Ͱ͖Δɽ

r= t

√n−2 +t² (1)

3. Նقྫྷ๪࣌ʹ͓͚Δর౓ɾ৭Թ౓ͷ͕ࠩྋஆײ ʹ༩͑ΔӨڹͷ࣋ଓੑݕূ࣮ݧ

3.1 ࣮ݧ಺༰

Նقྫྷ๪࣌ʹ͓͍ͯর౓ɾ৭Թ౓ͷ͕ࠩྋஆײʹ༩

͑ΔӨڹ͸ࣨԹ2 ˆࠩఔ౓Ͱ͋Δ͜ͱ͕Θ͔͍ͬͯ

Δɽͦ͜ͰຊষͰ͸௿র౓ɾߴ৭Թ౓ͷ࣮ݧࣨͰর౓ɾ ৭Թ౓ͷ͕ࠩྋஆײʹ༩͑ΔӨڹ͕Ͳͷఔ౓࣋ଓ͢Δ ͷ͔ݕূΛߦ͏ɽ

3.2 ࣮ݧ৚݅

ࣨԹ͸࣮ݧࣨ1Λ25ˆɼ࣮ݧࣨ2Λ27ˆͱ͠ɼ૬ର

࣪౓Λ50%ͱͨ͠ɽTable 2ʹࣨԹ͕ࠩ2ˆͷʢaʣʹ

͓͚ΔԹ࣪౓ͷฏۉͱඪ४ภࠩΛࣔ͢ɽর໌ͷর౓ɾ ৭Թ౓͸ɼ࣮ݧࣨ1Λ800 lxɼ3000 Kɼ࣮ݧࣨ2Λ 300 lxɼ5500 Kͱͨ͠ɽ

Table 2. Temperature and humidity in experiments of 2ˆdifference.

Temperature[ˆ] Relative humidity[%]

Room1 25.0±0.2 S.D. 49.5%±1.6 S.D.

Room2 27.0±0.2 S.D. 48.9%±2.1 S.D.

Fig. 4. Average of coolness and warmth in two rooms with 2ˆdifference in room temperature.

3.3 ࣮ݧ݁Ռͱߟ࡯

ࣨԹ2ˆࠩͷ2෦԰ʹ͓͚ΔྋஆײͷฏۉΛFig.4 ʹࣔ͢ɽඃݧऀ͸࣮ݧࣨ2ʢ27ˆɼ300 lxɼ5500 Kʣʹ

ೖ͔ࣨͯ͠Β10෼ܦա࣌·Ͱ͸ࣨԹʹࠨӈ͞Εɼ࣮

ݧࣨ1ʢ25ˆɼ800 lxɼ3000 KʣΑΓ΋࣮ݧࣨ2ͷํ

͕ஆ͔͍ͱධՁͨ͠ɽͦͯ͠ɼ15෼Ҏ߱͸࣮ݧࣨ1ͱ

࣮ݧࣨ2͕ಉఔ౓ͷྋஆײʹײ͡ΔͱධՁ͠ɼͦͷධ Ձ͸90෼·Ͱ࣋ଓ͢Δ܏޲͕͋ͬͨɽඃݧऀ΁ώΞ ϦϯάΛߦͬͨͱ͜Ζɼೖࣨ௚ޙ͸࣮ݧࣨ1ͱͷࣨԹ

͕ࠩେ͖͘ײͨͨ͡Ίɼ࣮ݧࣨ1ΑΓ΋࣮ݧࣨ2ͷํ

͕ஆ͔͍ͱධՁͨ͠ɼͱ͍͏ҙݟ͕͋ͬͨɽ·ͨɼ15

෼Ҏ߱ʹ͓͍ͯධՁ͕มಈ͠ͳ͔ͬͨཧ༝ͱͯ͠͸ɼ

؀ڥʹมԽΛײ͡ͳ͔ͬͨͨΊಉ͡ධՁΛͨ͠ɼͱ͍

Fig. 5. Evaluation distribution of the sense of cool- ness and warmth in room 2.

Table 3. Temperature and humidity in experiments of 2ˆdifference.

Temperature[ˆ] Relative humidity[%]

Room1 22.3±0.1 S.D. 45.5%±3.9 S.D.

Room2 23.9±0.1 S.D. 50.6%±0.4 S.D.

͏ҙݟ͕͋ͬͨɽҎ্ͷ͜ͱ͔Βɼর౓ɾ৭Թ౓ͷࠩ

ʹΑΔྋஆײ΁ͷӨڹ͸࣌ؒܦաʹΑͬͯޮՌ͕ݮগ

͢Δ͜ͱͳ࣋͘ଓ͍ͯ͠Δͱߟ͑ΒΕΔɽ

࣍ʹɼ࣮ݧࣨ2Ͱඃݧऀ͕ճ౴ͨ͠ྋஆײʹର͢Δ ධՁͷ෼෍ΛFig.5ʹࣔ͢ɽۙࣅ௚ઢΛݟΔͱ࣌ؒܦ աʹΑΓɼྋ͘͠ײ͍ͯ͡Δ͜ͱ͕Θ͔Δɽ·ͨɼධ Ձ෼෍͔Β΋࣌ؒܦաʹΑΓɼྋ͘͠ײ͡Δඃݧऀ͕

૿͍͑ͯΔ͜ͱ͕Θ͔Δɽ࣮ݧࣨ2ʹ଺ࡏͨ͠ඃݧऀ

ͷྋஆײʹର͢ΔධՁʹରͯ͠2.4અͰड़΂ͨ࣋ଓੑ

ධՁํ๏Λߦͬͨ݁Ռɼ༗ҙࠩ0.1 %ʹ͓͍ͯෛͷ૬

͕ؔ͋Δ͜ͱ͕ೝΊΒΕͨɽ͜ΕΒͷ݁Ռ͔ΒɼՆق

ྫྷ๪࣌ʹ͓͚Δর౓ɾ৭Թ౓ͷࠩʹΑΔྋஆײ΁ͷӨ ڹ͸ࣨԹ2ˆࠩʹ͓͍ͯ90෼࣋ଓ͢Δͱߟ͑ΒΕΔɽ

4. ౙقஆ๪࣌ʹ͓͚Δর౓ɾ৭Թ౓ͷ͕ࠩྋஆײ ʹ༩͑ΔӨڹͷ࣋ଓੑݕূ࣮ݧ

4.1 ࣮ݧ಺༰

ౙقஆ๪࣌ʹ͓͍ͯর౓ɾ৭Թ౓ͷ͕ࠩྋஆײʹ༩

͑ΔӨڹ͸ࣨԹ2ˆఔ౓Ͱ͋Δ͜ͱ͕Θ͔͍ͬͯΔɽ

ͦ͜ͰຊষͰ͸ߴর౓ɾ௿৭Թ౓ͷ࣮ݧࣨͰর౓ɾ৭ Թ౓ͷ͕ࠩྋஆײʹ༩͑ΔӨڹ͕Ͳͷఔ౓࣋ଓ͢Δͷ

͔ݕূΛߦ͏ɽ

4.2 ࣮ݧ৚݅

ࣨԹ͸࣮ݧࣨ1Λ22ˆɼ࣮ݧࣨ2Λ24ˆͱ͠ɼ૬ର

࣪౓Λ50%ͱͨ͠ɽTable 3ʹࣨԹ͕ࠩ2ˆͷʢbʣʹ

͓͚ΔԹ࣪౓ͷฏۉͱඪ४ภࠩΛࣔ͢ɽর໌ͷর౓ɾ ৭Թ౓͸ɼ࣮ݧࣨ1Λ800 lxɼ3000 Kɼ࣮ݧࣨ2Λ 300 lxɼ5500 Kͱͨ͠ɽ

4.3 ࣮ݧ݁Ռͱߟ࡯

ࣨԹ2ˆࠩͷ2෦԰ʹ͓͚ΔྋஆײͷฏۉΛFig.6 ʹࣔ͢ɽඃݧऀ͸ೖࣨ௚ޙ͸ࣨԹʹࠨӈ͞Εɼ࣮ݧࣨ

Fig. 6. Average of coolness and warmth in two rooms with 2ˆdifference in room temperature.

Fig. 7. Evaluation distribution of the sense of cool- ness and warmth in room 1.

2ΑΓ΋࣮ݧࣨ1ͷํ͕ྋ͍͠ͱධՁͨ͠ɽͦͯ͠ɼ5

෼Ҏ߱͸ࣨԹͷߴ͍࣮ݧࣨ2ʢ300 lxɼ5500 KʣΑΓ

΋ࣨԹͷ௿͍࣮ݧࣨ1ʢ800 lxɼ3000 Kʣͷํ͕ஆ͔

͍ͱධՁ͠ɼͦͷ܏޲͸90෼ܦաͯ͠΋มΘΒͳ͍

܏޲͕͋ͬͨɽඃݧऀ΁ώΞϦϯάΛߦͬͨͱ͜Ζɼ

ೖࣨ௚ޙ͸࣮ݧࣨ1ͱͷࣨԹ͕ࠩେ͖͘ײͨͨ͡Ίɼ

࣮ݧࣨ1ΑΓ΋࣮ݧࣨ2ͷํ͕ྋ͍͠ͱධՁͨ͠ɼͱ

͍͏ҙݟ͕͋ͬͨɽ·ͨɼ15෼Ҏ߱ʹ͓͍ͯධՁ͕ม ಈ͠ͳ͔ͬͨཧ༝ͱͯ͠͸ɼ؀ڥʹมԽΛײ͡ͳ͔ͬ

ͨͨΊಉ͡ධՁΛͨ͠ɼͱ͍͏ҙݟ͕͋ͬͨɽҎ্ͷ

͜ͱ͔Βɼর౓ɾ৭Թ౓ͷࠩʹΑΔྋஆײ΁ͷӨڹ͸

࣌ؒܦաʹΑͬͯޮՌ͕ݮগ͢Δ͜ͱͳ࣋͘ଓ͍ͯ͠

Δͱߟ͑ΒΕΔɽ

࣍ʹɼ࣮ݧࣨ1Ͱඃݧऀ͕ճ౴ͨ͠ྋஆײʹର͢Δ ධՁͷ෼෍ΛFig.7ʹࣔ͢ɽۙࣅ௚ઢͷ܏͖͕΄΅ͳ

͍͜ͱ͔Βɼ͕࣌ؒܦաͯ͠΋ྋஆײ͕΄ͱΜͲมԽ

͠ͳ͍͜ͱ͕Θ͔Δɽ·ͨɼධՁ෼෍ΛΈΔͱೖࣨ௚

ޙ͔Β5෼ܦա࣌·Ͱ͸ࣨԹʹࠨӈ͞Ε͍ͯΔ͕ɼ10

෼Ҏ߱ͷஆ͔͍ͱײ͡Δඃݧऀ਺͸มԽ͍ͯ͠ͳ͍͜

ͱ͕Θ͔Δɽ࣍ʹɼ࣮ݧࣨ1ʹ଺ࡏͨ͠ඃݧऀͷྋஆ

ײʹର͢ΔධՁʹରͯ͠3.3અ͓Αͼ4.3અͰड़΂ͨ

࣋ଓੑͷධՁΛߦͬͨ݁Ռɼ༗ҙࠩ0.1 %ʹ͓͍ͯ૬ؔ

͕ͳ͍͜ͱ͕ೝΊΒΕͨɽ͜ΕΒͷ݁Ռ͔Βɼౙقஆ

๪࣌ʹ͓͚Δর౓ɾ৭Թ౓ͷࠩʹΑΔྋஆײ΁ͷӨڹ

͸ɼࣨԹ2ˆࠩʹ͓͍ͯ90෼࣋ଓ͢Δͱߟ͑ΒΕΔɽ

5. ݁࿦ͱࠓޙͷల๬

ຊݚڀ͸ɼর౓ɾ৭Թ౓ͷ͕ࠩྋஆײʹ༩͑ΔӨڹ ͷ࣋ଓ࣌ؒΛ໌Β͔ʹ͢Δ໨తͰɼඃݧऀ਺Ԇ΂23

໊Ͱ࣮ݧΛߦͬͨɽͦͷ݁Ռɼর౓ɾ৭Թ౓ͷࠩʹΑ Δྋஆײ΁ͷӨڹ͸ࣨԹ2 ˆࠩʹ͓͍ͯɼ90෼࣋ଓ

͢Δ͜ͱ͕Θ͔ͬͨɽ͜ͷ͜ͱ͔ΒɼՆقʹ͓͍ͯ͸

ࣨԹΛ2ˆఔ౓ܧଓ্ͯ͛͠ɼౙقʹ͓͍ͯ͸ࣨԹΛ 2ˆఔ౓ܧଓͯ͠Լ͛Δ͜ͱͰɼۭௐʹΑΔফඅిྗ

Λ࡟ݮ͢Δ͜ͱ͕Ͱ͖ɼলΤωϧΪʔʹͭͳ͕Δͱߟ

͑ΒΕΔɽ

͔͠͠ɼຊ࣮ݧͷ࣮ݧ؀ڥ͸շదੑʹ͍ͭͯͷߟྀ

͸͓ͯ͠Βͣɼ࣮ݧࣨ2ʢ300 lxɼ5500 KʣͷΑ͏ͳ

௿র౓ߴ৭Թ౓ͷۭؒʹ௕͍࣌ؒΔͱɼ҉͍ͨΊʹຊ

͕ಡΈʹ͘͘ɼർΕΔͱ͍͏ҙݟΛඃݧऀ͔Βಘ͍ͯ

Δɽ·ͨɼߴ৭Թ౓ͷর໌؀ڥ͸ޕલ͔Βனʹ͔͚ͯ

͸࡞ۀʹूதͰ͖ͯΑ͍͕ɼ༦ํʹߴ৭Թ౓ͷর໌͸

దͣ͞ɼूத͠ʹ͍͘ͱ͍͏ҙݟ΋ಘ͍ͯΔɽ ΑͬͯշదੑΛଛͳΘͣʹྋஆײΛҡ࣋͢Δγες Ϝ͕ඞཁͰ͋Δͱߟ͑Δɽྫ͑͹ɼಉۭؒ͡ʹ͍Δࣥ

຿ऀ͕ଟ਺ܾʹΑۭͬͯௐͷઃఆԹ౓΍র໌ͷর౓ɾ ৭Թ౓Λܾఆ͢Δͱ͍͏γεςϜͰ͋Δɽ͜ͷγες Ϝ͸1೔ʹ਺ճଟ਺ܾΛߦ͏͜ͱͰɼ࣌ؒ΍ۀ຿಺༰ ʹ͋ͬͨ؀ڥΛఏڙ͢Δ͜ͱ͕Ͱ͖ɼշదੑ͕૿͢ͱ ߟ͍͑ͯΔɽࠓޙͷݚڀํ਑͸͜ͷΑ͏ͳγεςϜ࡞

੒͢Δ͜ͱͰ͋Δɽ͜ͷΑ͏ͳγεςϜΛ࡞੒͢Δ͜

ͱʹΑͬͯɼշదੑͱྋஆײΛಉ࣌ʹҡ࣋͠ͳ͕Βɼ ΤωϧΪʔ࡟ݮʹߩݙͰ͖Δͱߟ͑ΒΕΔɽ

ຊݚڀ͸ɼJSTͷิॿۚʹج͚͍ͮ͘͸ΜͳϦαʔ νίϯϓϨοΫεͷݚڀϓϩδΣΫτͱ࣮ͯ͠ࢪ͞Ε

·ͨ͠ɽ·ͨɼຊݚڀΛ਱ߦ͢Δʹ͋ͨΓɼಉࢤࣾେ

ֶཧ޻ֶ෦ͷࡾ໦ޫൣ໊༪ڭतʹ͸ɼஸೡ͔ͭ೤৺ͳ

͝ࢦಋͦͯ͠͝ڠྗΛࣀΓ·ͨ͠ɽ͜͜ʹײँͷҙΛ

ද͠·͢ɽ

ࢀߟจݙ

1) ࡾ໦ޫൣ, “஌తর໌γεςϜͱ஌తΦϑΟε؀ڥίϯιʔγ ΞϜ”,ਓ޻஌ೳֶձࢽ,22[3], 399-410 (2007).

2) র໌ֶձ, “԰಺র໌ͷΨΠυ”,র໌ֶձ, (1980).

3) ੴҪਔɼງӽ఩ඒ, “ҟͳΔ࡞༻Թ౓ɾর౓Ϩϕϧɾޫݯͷ૊

Έ߹Θ͕ͤਓମͷੜཧɾ৺ཧ൓Ԡʹٴ΅͢ෳ߹తӨڹ”,೔ຊ ݐஙֶձܭըܥ࿦จू,64[517], 85-90 (1999).

4) C.A.Bennett, P.Rey, “What’s So Hot about Red?”,Hu- man Factors,14[2], 149-154 (1972).

5) ӏࣂਅ੒,໺෦ୡ෉, “ࣄ຿ॴϏϧʹ͓͚ΔԹ೤؀ڥͷෆۉҰੑ

ʹؔ͢Δݚڀ”,೔ຊݐஙֶձ؀ڥܥ࿦จू,82[738], 739-746 (2017).

6) ෢ాਔɼ੉পԝɼٱอా߁඙, “ఱҪ᫔ࣹྫྷஆ๪γεςϜʹؔ

͢ΔݚڀʢಉҰݐங෺࢓༷ʹ͓͚ΔఱҪ᫔ࣹྫྷஆ๪ͱࡏདྷྫྷஆ

๪ͷൺֱʣ”,೔ຊݐஙֶձٕज़ใࠂू,6[11], 294 (2000).