Lamp capable of adjusting height and illumination angle

Abstract

The invention provides a lamp capable of adjusting height and an illumination angle, which comprises a base, a holder body, a lamp cap and a movable mechanism, wherein, the holder body is combined with the base and the lamp cap respectively and can move up and down relative to the base; the lamp cap is oppositely equipped with at least two shields with a predetermined open-close degree, and the shields are equipped with a plurality of light source pieces; the movable mechanism is arranged among the base, the holder body and the lamp cap for cooperatively adjusting the illumination angle of the lamp cap and up-and-down displacement of the holder body relative to the base; and the lamp cap is driven by the movable mechanism to change the open-close degree of the shields so as to form the corresponding illumination angle. The lamp of the invention can change the height and adjust the illumination angle of a light source correspondingly at the same time.

Description

technical field [0001] The invention relates to a lamp, in particular to a lamp whose height and irradiation angle can be adjusted. Background technique [0002] In order to avoid the problem that the light is diffused in the space without a focus, the power consumed by the lamp is not proportional to the energy of the light actually projected on the area that needs to be illuminated. The design is like Taiwan Patent Application No. 96221782, "LED device and The lampshade patent of "reflecting cup for light emitting diode device", which is a reflective cup for light emitting diode device, which includes a mounting part and a reflecting part, the mounting part is used to install a light emitting diode component, and the reflecting part has a A high-light reflective film layer formed by a coating method, when the light-emitting diode component is driven by a current to emit light, the reflective part reflects the light so that the light is generally concentrated in the same di...

AI Technical Summary

Problems solved by technology

[0004] However, according to the performance of the light-emitting components installed on the general lamps, a lampshade that can give full play to the performance of the light-emitting components is installed to provide a preset lighting range and brightness per unit area suitable for reading or lighting. When adjusting, the irradiation angle of the light source projected by the lampshade (that is, the angle formed by the intersection of the light and the projection target of the light) will be changed, thereby changing the lighting range and the brightness per unit area. For example, when the lamp is extended, the lighting range will be Relatively magnified, but the brightness per unit area is weakened. When the lamp is lowered, the lighting range will be relatively narrowed, but the brightness per unit area will be increased. In this way, when the user looks at the projected target of the light, the light source will be too concentrated on some specific points. On the projection target, there is a large difference in light and dark areas, which will cause glare to the eyes when watching, or be prone to soreness and affect the sympathetic nerve, causing dizziness and discomfort;

[0005] As can be seen from the foregoing, current lighting fixtures often need to adjust the height of the lamp head in accordance with the difference in the spatial pattern and the location of the lighting target, which often causes the light emitted by the concentrated light-emitting components of the lampshade to change the preset irradiation angle, and cannot form a suitable visual effect. Light sources with lighting range and brightness per unit area may even have adverse effects on the eyes. For the problem of sacrificing lighting quality when adjusting lamps to take into account space constraints, their practicality is poor.

Images