Please show me an expert who knows electronics. How to remove the LED fishing headlight cap?

Conventionally, the lampshade can be unscrewed from the lamp holder (like a flashlight), and the bulb wiring board can be seen when unscrewed, because the EDL bulb is welded on the circuit board, and the wiring board is fixed on the lamp shell with screws. So if you just open the back, you can't pull out this circuit board. I dismantled a blue light for 300 yuan, and this is the structure. I don't know if your lamp is like this, it's for reference only.