General requirements
(1) the main library in the visual task is reading, find books, etc.. Lighting design shall meet the illumination standards, efforts should be made to improve the quality of lighting, with particular attention to reduce glare and light screen reflection.
(2) reading room, stack lights installed quantity, the design should consider from the lamps, lighting, control programs and equipment, management, maintenance and other energy-saving measures.
(3) The Library should set up Emergency lighting, the duty of lighting or security lighting. Emergency lighting, duty lighting or security lighting should be part of the general lighting,:, and should be individually controlled. On duty or security lighting can also use part of the emergency lighting or all.
(4) The Library of public lighting and work (office) area lighting should be separated from the power distribution and control.
(5) of lamps and lighting equipment selection, installation, layout, and so should pay attention to safety, fire.
2, reading lighting
(1) lighting the way
Reading in general can be general lighting or mixed lighting. Larger reading room should be a district general lighting or mixed lighting the way. Lighting the way shown in Figure 1.
When the district general lighting way, non-access to the illumination of the area, generally 1/2 to 1/3 of the Reading Area average desktop illuminance.
When the hybrid lighting method, general lighting illuminance should be the total illumination of the 1/3 to 1/2.
(2) light source and lighting options
1) light source selection. L read mining exclusion of attention to the selection of high quality ballast fluorescent lighting, such as the use of high quality electronic ballasts or low noise, energy-saving inductance ballast inductance ballast should be moved to the outdoor centralized setup requirements of a higher place. The anti-ballast generated noise.
2) Lamp Selection below.
â' should be selected to limit the glare performance good open-type lighting, with a grille or with diffuse hood, lights, etc. as diffuse plate.
The â'¡ lamp grille and the reflector is not passed away a full mirror, high-brightness material, to use the semi-specular low brightness material.
â'¢ should use the bat-wing light even lamps.
The â'£ selection of lamps should be coordinated with the interior decoration.
(3) lamps layout
Lighting layout of the lighting effects. Reading room lighting layout - general principles:
I) lamps should not be arranged in the interference area, or easy to produce light curtains reflection jamming area easy job on the light screen reflection area lighting such as layout should be left in the reader on both sides (one side) formed on both sides of the desktop (or left) to join the light, as shown in Figure 3, the effect is better
2) To reduce direct glare effects, lighting the long side should be parallel to the main line of sight of the reader, generally parallel to the direction of the lateral window layout.
3) larger reading room, when conditions permit, should be used two or more tubes embedded fluorescent light with or block-shaped cloth light program, its purpose is to increase the non-interference zone, to reduce the number of ceiling lamps, increase lighting light output area of ??lower surface brightness of the lamps, and to improve the quality of indoor lighting.
4) reading mixed lighting. Read the table of local lighting should be used fluorescent lamps. Local lighting Chi chalk set should not be set in front of the reader, should be located in the left front, to avoid the serious reflection of Hong Kong, to improve visibility.
3, stack lighting
(1) General requirements for stacks lighting
1) stacks lighting, visual any scythe to take place on a vertical surface, the spine at the vertical illuminance is 2001x.
The way street lighting) between shelves should be used the special lamps;, and set up a separate switch control. The open-shelf stacks with research a study car at an additional local lighting.
(2) Lamp Selection
1) stacks lighting generally use indirect lighting or fluorescent lamps with multi-level exit light, filter UV lamps should b e used for rare books and antiquities stacks.
2) Bookshelves way street lighting special lamps should be narrow with optical intensity distribution, as shown. Lamps in horizontal ((AA direction) the Xu amount as possible to reduce 30 to 60. Light intensity distribution within the region, the lower part of the bookcase vertical illuminance, in general it is desirable to
1 - 3 where, Io-lamps at 0. The direction of the light intensity value (max), cd:
130 -; - Lighting at 30. The direction of the light intensity value, cd.
3) stacks lighting is usually installed at low altitudes, should be limited glare measures, open-type lighting protection angle of not less than the distance of the lamps, books and other combustibles should be greater than o. 5m.
4) stacks lamps should not use a sharp cut-off light fixtures, otherwise it will cast a shadow on the shelf top, should not be used to cover the direct lighting and specular lighting, because it can cause a reflection of the bright pages or light print handwriting, visual interference.
(3) lighting installation
Frame-way street lighting special lighting is usually installed way street over the stacks of books, mostly for ceiling installation, see Figure 5 (a). Conditions can be embedded installation, shown in Figure 5 (b). Lighting installation to the formation of one: one on the shelf, see Figure 5 (c), with greater flexibility, but should take the necessary electrical safety and fire prevention measures. Open-shelf stacks and reading room within the unilateral arrangement of shelves, can be non-symmetrical light intensity distribution of the lamps of the Temple of the projection to the shelves tomorrow, see 5 (d) such installation, not only can the bookshelf lighting to achieve good results, nor The reading will have indoor glare interference.
(4) stacks ground decoration
In order to improve the vertical illumination of the bottom shelves, stacks the ground should adopt the reflection finishes than winning material. Both increase the ground reflection, does not produce reflected glare.
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