| Title |
A Basic Study on the Preferable Illumination Environment According to Latitude of Hometown |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2017.31.6.001 |
| Keywords |
Illumination Environment ; LED lighting ; Lighting design ; Preferable Illumination Environment ; Latitude |
| Abstract |
Humans have adapted and evolved under the constantly changing natural light. At this paper, it started the research under the assumption that the perception of light environment is different according to geographic environment such as latitude. Based on color temperature, intensity of illumination, and lighting method, it investigated the preference response to readability for people with various latitudes and derived lighting data on light environment preference according to their native latitude groups. It was found that for those people who have lived long hours under the strong light near the equator through the analysis process, they prefer the high illumination level and the high color temperature in the space environment for reading. The people lived in the ‘latitude 35°～40°’ and ‘latitude 15°∼20°’ range hasve been similarly evaluated for readability of the light environment. Although it is evaluated differently depending on the illumination level and the illumination method, the suitable color temperature for the illumination environment in the reading environment is 4000K, which is suitable for the illumination environment in the reading environment. In particular, 4000K with of 700lx of direct illumination or the mix of direct and indirect illumination use is are preferred. Although there are limitations on various kinds of experiments on in the experimental variables, the preferable illumination environment of different latitude has more influenced by the color temperature rather than the illumination method or the change in the illuminance levels. the illumination direction for the readability function in the presented condition is preferable to the illumination environment according to the latitude of the hometown according to the color temperature rather than the illumination method or the illumination change in the range of illumination, The difference was significant. This study has significance in raising the importance of experimental study on the light environment based on latitude which is the overlooked geographical environment. |