The LED external control point light source is controlled by the external system, and the internal control is internal ram, and the program cannot be changed. Generally speaking, the single definition is that the external controller is called external control
The LED surface light source is generated by the point light source. The light of the surface light source is emitted in parallel, and the point light source is emitted to the surrounding in a spherical shape.
The LED external control point light source and the LED surface light source are both LED lights, so in addition to the common advantages of LEDs, their specific differences are as follows:
1. The surface light source is easy to dissipate heat and has low technical requirements
2. The surface light source is arranged in an array, which is easy to double image, that is, the so-called "ghost image" is formed
3. The input power of the surface light source is DC12V, and the external transformer is purchased separately, and the compatibility is poor; the input power of the LED external control point light source is DC12V-24V, and the system is formed in a complete set, with good compatibility, with over-current protection, over-voltage protection, over-heat protection and Lightning protection.
4. The light-emitting angle of the surface light source is 60-110°, forming an "apple-shaped" light distribution curve, so the central point LUX is relatively high, but limited by the linear projection of the LED, the illumination range is limited; the light-emitting angle of the externally controlled point light source of the LED>120° , Forming a "bat wing" light distribution curve, targeted control of the light emitted by the LED within the required range and a wide range of illumination.