LISTSERV mailing list manager LISTSERV 16.0

Help for BEST-L Archives


BEST-L Archives

BEST-L Archives


BEST-L@LISTS.UFL.EDU


View:

Message:

[

First

|

Previous

|

Next

|

Last

]

By Topic:

[

First

|

Previous

|

Next

|

Last

]

By Author:

[

First

|

Previous

|

Next

|

Last

]

Font:

Monospaced Font

LISTSERV Archives

LISTSERV Archives

BEST-L Home

BEST-L Home

BEST-L  January 2009

BEST-L January 2009

Subject:

Welcome to Toyota 'LED Town'

From:

Mark van Soestbergen <[log in to unmask]>

Reply-To:

Mark van Soestbergen <[log in to unmask]>

Date:

Fri, 30 Jan 2009 11:36:53 -0500

Content-Type:

multipart/related

Parts/Attachments:

Parts/Attachments

text/plain (99 lines) , image001.jpg (99 lines) , image002.jpg (99 lines) , image003.jpg (99 lines) , image004.jpg (99 lines) , image005.jpg (99 lines) , image006.jpg (99 lines) , image007.jpg (99 lines) , image001.jpg (99 lines)

TWA-NOST-headerNL03, NL05
http://techon.nikkeibp.co.jp/english/NEWS_EN/20090116/164123/

 

Welcome to Toyota 'LED Town' (1)
Jan 20, 2009 20:42
Satoshi Ookubo, Nikkei Electronics

 


The main entrance to "Green Avenue Azabu no Oka"


The panoramic view of the residential area


The sale price is at the high \50 million (approx US$553,000) level for a property with a land area of slightly less than 70 tsubo (approx 231m2) and a floor space of slightly less than 40 tsubo.


A street light illuminating an intersection with white LEDs that emit light similar to that of light bulbs


Azabu no Oka has some features intended for plug-in hybrid cars.


Tsutomu Ochiai, productive lighting designer of Member & Ochiai Design Office, worked out plans and designs for illuminating the residential area.


Kentaro Kiuchi (left) and Takayuki Ozawa (right) of Toyota Smile Life Inc

Imagine what it would be like if there is a town illuminated only by LED lamps?

In October 2008, we wrote a story about the residential area "Green Avenue Azabu no Oka" developed by Toyota Smile Life Inc (See related article). The area, which uses only LED lights for all outdoor lighting, is now for sale in lots.

This time, Nikkei Electronics actually visited Azabu no Oka and interviewed Tsutomu Ochiai, lighting designer of Member & Ochiai Design Office, which created the plans and designs for illuminating this residential area, and Toyota Smile Life's employees.

Nearly 1,000 LED lamps used
The LED lights installed in Azabu no Oka illuminate public areas including streets, sidewalks and parks as well as private areas such as the gate, porch and walls of each house. There will be a total of 204 houses built in this residential area when it is completed. Currently, 21 houses (including one model home) have already been completed and other houses are under construction. It will take four years to build all the houses.

When completed, Azabu no Oka will have a total of about 1,000 LED lights with each house having four or five lights. To create relaxing and warm atmosphere, all the LED lights in the area are white LEDs that emit light similar to that of light bulbs and have a color temperature of slightly less than 3,000K.

In addition, the LED lights are laid out to indirectly illuminate wide areas of streets and walls to create a vivid scenery. The LED lights do not directly enter the human eye, preventing "glaring," which is sometimes a concern about LED lights. This measure was adopted because "glaring is unfavorable for residential lighting," Ochiai said.

The illumination of Azabu no Oka was designed by leveraging the characteristics of LED lights, which have a low power consumption and can easily highlight objects through indirect lighting, Ochiai said. LEDs emit light in one direction unlike other light sources that emit light in all directions, making it possible to efficiently provide indirect lighting, he said.

In addition, only LED lights with high luminance efficiency were used to illuminate only the minimum necessary areas. Furthermore, the irradiating areas of LEDs were widened so that people can see wider illuminated areas and feel more brightness than the actual value. Through these methods, power consumption was reduced by about 75% compared with normal light sources, Ochiai said.

LEDs directly connected to AC 100V power source
Japan Outdoor Lighting Mfg Co Ltd supplies the LED lights for Azabu no Oka. Each light incorporates white LED modules manufactured by Toyoda Gosei Co Ltd. About five types of LED modules were used to make the LED lights, according to Japan Outdoor Lighting Mfg.

The LED modules are directly connected to an AC 100V power source, without using an AC-DC converter. Though long life is sometimes a selling point of LED lights, which are resistant to deterioration, some say that the operating life of LEDs is affected by deterioration of power supply circuits. From this perspective, LED lights used in Azabu no Oka are free from such problems.

For lighting LEDs through direct connection with an AC 100V power supply, it is common to connect 20 to 30 LEDs in series. With this method, 3-4V is applied to each LED, making it possible to light LEDs (in the case of GaN-based LEDs such as white and blue LEDs). Though details of the method employed this time were not disclosed, it is possible that this common method was applied to the residential area.

Also, all of the subdivisions are equipped with an exterior LED light as well as an AC 100V outlet, which is intended for plug-in hybrid cars, in the vicinity of the parking area. There is no wonder that Toyota Smile Life Inc, which belongs to the Toyota Group, highlights the environmentally friendly feature that utilizes the next-generation automotive technology.

  a.. [Column] Residential Area to Open with Streets Illuminated Only by LED Lights
  b.. Welcome to Toyota 'LED Town' (2)
  c.. Welcome to Toyota 'LED Town' (3)
  

 

 

            Embassy of the Kingdom of the Netherlands
            Office of Science and Technology
            Netherlands Embassy
            3-6-3 Shibakoen, Minato-Ku
            Tokyo 105-0011, Japan
            Tel: +81-(0)3-5776-5510
            Fax: +81-(0)3-5776-5534
            Email: [log in to unmask]
            TWA website: http://www.TWAnetwerk.nl
            Embassy website: http://www.oranda.or.jp/
           
     Japan and the Netherlands commemorate 150 years of diplomatic and 400 years of trade relations. Visit www.nihonoranda.jp to get an idea of our shared past, present and future and see how you can take part in the celebrations!

      日本とオランダの外交関係樹立から150年、通商交易開始から400年になります。あなたも是非 www.nihonoranda.jp を訪れて、ふたつの国の過去、現在、未来に触れ、体験してみて下さい。
     


       
     

 

 

P Before printing, consider ENVIRONMENTAL responsibility...


--------------------------------------------------------------------------------

This message shall not constitute any obligations. This message is intended solely for the addressee. If you have received this message in error, please inform us immediately and delete its contents.

Top of Message | Previous Page | Permalink

Advanced Options


Options

Log In

Log In

Get Password

Get Password


Search Archives

Search Archives


Subscribe or Unsubscribe

Subscribe or Unsubscribe


Archives

September 2020
August 2020
July 2020
May 2020
April 2020
March 2020
February 2020
January 2020
December 2019
November 2019
October 2019
September 2019
August 2019
July 2019
June 2019
May 2019
April 2019
March 2019
February 2019
January 2019
December 2018
November 2018
October 2018
September 2018
August 2018
July 2018
June 2018
May 2018
April 2018
March 2018
February 2018
December 2017
November 2017
October 2017
September 2017
August 2017
July 2017
June 2017
May 2017
April 2017
March 2017
February 2017
January 2017
December 2016
November 2016
October 2016
September 2016
August 2016
July 2016
June 2016
May 2016
April 2016
March 2016
February 2016
January 2016
December 2015
November 2015
October 2015
September 2015
August 2015
July 2015
June 2015
May 2015
April 2015
March 2015
February 2015
January 2015
December 2014
November 2014
October 2014
September 2014
August 2014
July 2014
June 2014
May 2014
April 2014
March 2014
February 2014
January 2014
December 2013
November 2013
October 2013
September 2013
August 2013
July 2013
June 2013
May 2013
April 2013
March 2013
February 2013
January 2013
December 2012
November 2012
October 2012
September 2012
August 2012
July 2012
June 2012
May 2012
April 2012
March 2012
February 2012
January 2012
December 2011
November 2011
October 2011
September 2011
August 2011
July 2011
June 2011
May 2011
April 2011
March 2011
February 2011
January 2011
December 2010
November 2010
October 2010
September 2010
August 2010
July 2010
June 2010
May 2010
April 2010
March 2010
February 2010
January 2010
December 2009
November 2009
October 2009
September 2009
August 2009
July 2009
June 2009
May 2009
April 2009
March 2009
February 2009
January 2009
December 2008
November 2008
October 2008
September 2008
August 2008
July 2008
June 2008
May 2008
April 2008
March 2008
February 2008
January 2008
December 2007
November 2007
October 2007
September 2007
August 2007
July 2007
June 2007
May 2007
April 2007
March 2007
February 2007
January 2007
December 2006
November 2006
October 2006
September 2006
August 2006
July 2006
June 2006
May 2006
April 2006
March 2006
February 2006
January 2006
December 2005
November 2005
October 2005
September 2005
August 2005
July 2005
June 2005
May 2005
April 2005

ATOM RSS1 RSS2



LISTS.UFL.EDU

CataList Email List Search Powered by the LISTSERV Email List Manager