Integrated design of building curtain wall and lighting
The light color and the color and texture of the curtain wall material have a complementary relationship. Generally speaking, the bricks and yellow-brown stone materials are more suitable for irradiation with warm light, using high-pressure sodium lamps or halogen lamps; High cool white light (complex metal lamp) is used for irradiation, but high pressure sodium lamp is also possible. In terms of lamps, generally speaking, the light distribution angle of square floodlights is larger, and the wide angle of circular lamps is smaller. The effect of wide-angle lamps is relatively uniform, but it is not suitable for long-distance projection.
In recent years, LED lamps have been widely used in the facade lighting of buildings. The basic form of combination of LED lamps and curtain wall facades:
1. Install LED lights on the skeleton and support structure. Hide the lamps under the beams or slabs of the building to create a backlight effect on the solid wall lighting.
2. The way of light transmission in the double epidermis. The use of light-transmitting lighting in the cavity not only achieves a suitable lighting effect, saves light energy, but also avoids glare and shields the lamps well. For example, the Water Cube, with blue LED lights, highlights the function of the venue and gives a novel interpretation to it.
3. Facade material embedding method and façade lighting method.
4. Sky curtains, such as the World Trade Fair in Beijing. With a length of 200m and a width of 30m, it breaks the traditional screen mode and brings a new visual experience.
The main points of curtain wall and lighting integration design:
point
Point LED, also known as LED smart light, each pixel point is completely independent and has independent control signals. Points can be distributed in any form, size and shape. Points can be used to highlight nodes, and points can be used to form unique graphics and changes. Showing a prosperous effect.
Wire
When a number of LED pixels are installed on the strip member, it becomes a line, which is what people call a strip light. Lines can be used to emphasize the outline of the building, making the shape more flexible.
noodle
On the building facade, let the lights appear in the form of faces, use the face to create a commercial atmosphere, use the face to distinguish the functional areas of the building, and make the entire face three-dimensional.
However, in the specific curtain wall design, the lighting design needs to be considered in coordination with the curtain wall design.
a. Stone curtain wall: You can consider setting spotlights at the top or bottom to highlight the texture of the stone and the momentum of the building, or set up hidden light strips on the facade or use the light strips as the decorative lines of the stone curtain wall to be combined with the curtain wall.
b. Aluminum panel curtain wall: It is more convenient to route the light strips on the stone curtain wall and the aluminum panel curtain wall. You can directly route the wires and install the switch on the inner side of the panel, and you can set different light types according to different facade requirements.
c. Glass curtain wall: The glass curtain wall can be divided into frame type and unit type, among which the frame type can be divided into open frame and hidden frame.
1) Hidden frame frame glass curtain wall: It is generally not recommended to install light strips on the hidden frame curtain wall. On the one hand, the exposed light strip affects the appearance of the curtain wall, and on the other hand, the installation of light strips will affect the watertightness of the hidden frame curtain wall. have a greater impact.
2) Open frame frame glass curtain wall: The light strip should be reasonably connected to the main stress structure of the curtain wall, and the setting of the light strip should not destroy the overall effect of the curtain wall. In the design of the façade, the light strip can be considered as part of the exterior decoration , both horizontally and vertically, an outlet hole should be set every 20m, and the size of the hole is related to the power of the lamp used. Fixtures of lamps cannot destroy the watertightness of the curtain wall.
3) Unitized curtain wall: It is not recommended to make light strips directly on the curtain wall layer. This is because the unit plate is a whole, any drilling on the profile will destroy the isobaric cavity of the aluminum alloy profile and affect the overall watertightness of the curtain wall. performance. Generally, indoor flood lighting is considered, which can also achieve the effect of night scene decoration of buildings. For example, the lamps are integrated into the curtain wall system, and the lights are projected on the reflective surface of the aluminum plate on the inner layer through computer control, and finally presented on the building in the form of a glossy surface.
While pursuing the beauty of the building, we should also consider whether the light environment is damaged and light pollution is caused. In order to avoid the glare caused by light pollution, we can change the position and height, angle and shape of the lamps to avoid the normal activities of people. For the visual range, indirect lighting can also be used, so that the light source no longer enters the field of view and avoids glare.
