Today, down lights have experienced these two phases of traditional era and LED era.
Traditional lamp era has gone through three generations. The first generation of the traditional lamp is used to embed the form of an upright, the light source directly to the vertically mounted lamp cup. This first generation there are some disadvantages Down: ceiling spacing occupied, reducing the height of the space of the house, the light source is prone to deviate from the phenomenon of leakage phenomenon, thereby reducing the efficiency of the light source and the like.
The second generation is the use of traditional down lights tap embedded form, although this problem solved down lights in terms of height, but transverse embedded form is somewhat widened in width. And the second generation of down lights using light tap form, on the one hand, reducing the use of surface light source, reducing the light source utilization, energy is a waste; hand, tapped original form also disrupted Down the optical design.
The third generation of the traditional lamp to achieve the perfect combination of light and lighting, to solve the shortcomings of the first generation and second-generation down lights, the traditional down light advantage in luminous efficiency and structure together.
Subsequently, LED down lights ushered in the era.
If you follow the light source to count replacement, LED down lights can now be said to be the fourth generation, the first alternative straw hat lamp beads, the second-generation high-power lamp beads, beads third generation SMD LED (SMD) and section four generations of LED integrated light source (COB); If you follow the style to count, then numerous.