LED emergency bulb, as the name implies, is used for emergency lighting bulbs of a kind, a wider use, while easy to install. The following I give you specific knowledge related to the LED emergency bulb, including LED emergency bulb working principle, LED emergency bulb how long can light and LED emergency bulb use three aspects of the content.
A. LED emergency light bulb working principle
LED emergency bulb working principle is mainly rely on the electronic control board to play a role. The electronic control board includes the power supply circuit, charging circuit, power failure detection circuit and power switching circuit.
AC power is input to the power circuit, which converts AC power to DC power to provide the charging circuit, power switching circuit and power failure detection circuit; AC power also has another input to the power failure detection circuit to detect whether the AC power has reached a true power failure.
The charging circuit charges the rechargeable battery, which is a power supply for the power switching circuit; the other power supply for the power switching circuit is the power supply circuit, and when the power failure detection circuit does not output a signal to the power switching circuit, the power switching circuit directly outputs the DC power provided by the power supply circuit to the light source.
When the power failure detection circuit output signal to the power switch circuit, the power switch circuit that is from the rechargeable battery output DC power to the light source; through the light bulb head connected to the housing and then connected to the lamp shade composed of the housing space, which houses the electronic control board, battery and light source, and each other through the wire connection.
LED emergency light bulb when the power is off or after a power outage, can still be normal lighting in more than three hours, give full play to the function of emergency lighting power outages.
B. How long can LED emergency bulb light
LED emergency light bulb is also known as power storage light bulb, delay light bulb, non-stop light bulb, power outage lamp, it combines the general lighting function and power outage emergency lighting function, and lighting color can be designed according to different needs, has the advantages of wide applicability, easy to install or replace.
The structure of LED emergency bulb is bulb head, shell, battery, light source, lampshade and electronic control board. By the bulb head connected to the shell and then connected to the lamp shade composed of the space, which houses the electronic control board, battery and light source, and each other through the wire connection.
The electronic control board can change the AC power into DC power, and provide to the light source, and the electronic control board can detect whether this AC power reaches the real power off, and choose whether to switch power for the battery power.
As for how long LED emergency light bulb can light, * is more than three hours, very good to achieve the function of emergency lighting power outage.
C . LED emergency light bulb use method
LED emergency light bulb includes: a light bulb head; a shell, the shell for the ring-shaped hollow nose, and its end can be connected to the light bulb head; a battery, the battery for rechargeable batteries; a light source; a lampshade, the lampshade for a hollow nose, similar to a hood, which has only one opening, and the opening and the shell end can be compatible.
LED emergency light bulb is generally with a battery, not in use is usually in the road charging or has been fully charged, power disconnected, the light bulb began to work.
In fact, LED emergency bulb emergency battery should be placed in the lamp head, so the lamp lighting process is the charging process.
In short, LED emergency bulb use is relatively simple, the key is that its charging process requires more attention to the user.
Post time: Mar-30-2022