• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.9
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• pp.2221-2226
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• 2009

This paper presents the design of the LED sign board system installed on the exterior of a building and powered by a photovoltaic system. A grid connected photovoltaic system has been designed with the capacity estimate of the load, battery and power. After the luminance and uniformity of LED load has been checked, the sign board and the solar cell modules have been installed. The performance and problems occurred during the field test for the photovoltaic LED sign board system have been analyzed.

• Journal of the Korean Academic Society of Industrial Cluster
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• v.4 no.1
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• pp.51-61
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• 2010

Digital Signage is outdoor media to provide each content and message through digital displays instead that posters and signs are displayed on public facilities. Recently, digital signage have been popular to deliver variety information and advertising on the rapid development of intelligent digital imaging devices based LCD, LED. Continuously digital signage demand and market are growing because digital signage feature is able to capable of interactive communication. Digital signage is expected that digital advertising market is continue rising in spite of global economic downturn at various research institutions, and it is expected to replace traditional media advertising in a new way with the coming digital signage at convergence media side.

• Journal of the Institute of Convergence Signal Processing
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• v.11 no.4
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• pp.326-331
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• 2010

This paper has proposed and experimentally demonstrated a new BLU using an LED and an acryl, which is specially focused on the implementation about the guiding effect of an acryl luminous by the LED. While the conventional BLU using a fluorescent lamp is generally and widely used, it shows big power consumption with a short life even more too thick to hold on the wall. To solve such demerits, we propose a new method for a BLU using an LED and an acryl in this paper. This BLU system has various scratches on the surface of acryl to get diffusion effect of light, and has been included an embedded board that can dynamically control the colors and the intensity of the BLU through the Internet. We have conducted computer simulations to find out the optimal scratch pattern on the surface of the acryl for the backlight system. Based on the resulted out simulation. The the optimal scratch pattern signs has been developed. The simulation result shows 2,673Lux an average for a luminous intensity test, and the other hand, experiential result shows 2,554Lux. From the experiments, it is possible for the proposed BLU system to be used for real advertisements.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.21 no.3
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• pp.1-10
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• 2007

As one of the important metropolitan cities in Asia, Seoul shows vibrant atmosphere in the night as well as daytime. Colorful signboards and outdoor lightings are consists of major night elements. In this research, nightscapes of four major streets in Seoul are photographed to analyze the image of Seoul at night. After preparing of slides, questionnaire survey is conducted to study people's subjective responses on the images of streets at night. After survey, SPSS 10.0 statistical program was used to analyze the results of subjective responses on the nightscapes in Seoul. According to the result, night streetscape 4(showing and business district)shows vibrant and interesting image. Meanwhile, streetscape 1(high-rise with exterior lighting in showing district)shows beautiful and harmonious image. Major factor's are named as 'harmonious' and 'vibrant'. Variable 'arranged' shows the highest coefficient to the variable 'harmonious'. Every variables except the variable 'warm' shows significant difference among the mean values of each variables.

• Journal of the Korean Institute of Landscape Architecture
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• v.40 no.5
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• pp.88-99
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• 2012

This study was to analyze the changes made in the landscape cognition in Yong-in City for the past 10 years. For the analysis, the landscape plan in 2001, and the survey data collected for the new 2012-landscape plan were used. The questions on the survey covered the cognition of the current landscape status, the evaluation of landscape depending on the types of landscape, the understanding of each element on the landscape, the residents' cognition, etc. In the evaluation of the status on current landscape, Everland was ranked outstandingly high as a symbol and a representative place both in 2001 and 2012. The image of the overall city landscape was changed from the image of unique, diverse, grand-scale and well ordered in 2001, to the image of wide, disordered, common and realistic. As the evaluation of individual landscape types such as the view of the mountain, the surroundings of the tourist attractions, colors, etc, has improved overall. The image of the city has been evaluated to improve gradually, especially in the level of individual element. In the study of participating the willingness of residents, despite the interest in landscape has been continued, the attitude for the actual participation in the action plan or the restriction of property right has been changed into a negative side. For the direction of the landscape plan, the residents are more interested in the detailed subjects : such as the financial support, the night landscape plan, the improvement of the problems, etc. During the last 10 years, the changes on the landscape cognition in Yong-in City have changed more in detail and specifically, the cognitions on the local government and developers changed positively. However the reducion of the participants' willingness suggested a review on the policies and the projects of the landscape.