公开(公告)号：US10711989B2

公开(公告)日：2020-07-14

申请号：US16073851

申请日：2017-01-31

Applicant: LIGHTBOY CO., LTD.

Inventor： Hirotoshi Ishizawa ,  Atsushi Onishi ,  Taichi Onodera

IPC: F21S6/00 ,  F21V23/02 ,  F21V29/503 ,  F21V29/67 ,  F21V29/83 ,  F21V29/77 ,  F21S2/00 ,  F21V29/508 ,  F21W131/407 ,  F21W131/105 ,  F21Y105/10 ,  F21S8/08 ,  F21W131/10 ,  F21Y115/10 ,  F21V31/00

Abstract: An object is to provide an LED floodlight that enables efficient use of a cooling means, e.g., a heat dissipation fan, and can pursue a reduction in size. Therefore, it is an LED floodlight wherein a panel-shaped floodlight portion formed as a floodlight surface is formed such that a plurality of LEDs is arranged on a front surface, a heatsink having a plurality of heat dissipation plates on a back surface of the panel-shaped floodlight portion, and a cooling fan configured to send air toward a central portion of the heatsink are arranged in this order, the LED floodlight is formed of an appropriate power supply circuit, wherein a plurality of heat dissipation plates of a heatsink is radially arranged from a central portion to a periphery, a central portion of a coupling surface between heat dissipation plates of the heatsink protrudes toward a cooling fan configured to send air and has a curved surface portion from a central portion to a periphery.

公开(公告)号：US20210317973A1

公开(公告)日：2021-10-14

申请号：US17269882

申请日：2019-07-31

Applicant: LIGHTBOY CO., LTD.

Inventor： Norihito YOSHIMORI ,  Hirotoshi ISHIZAWA ,  Koji TSUCHIYA ,  Satomi KUGIMIYA

IPC: F21V21/22 ,  F21V21/30

Abstract: One purpose is to smoothly raise and lower a telescopic post used in a floodlight.
A floodlight according to the present invention includes: a telescopic post 2 that has a plurality of posts 21 to 25 whose outer diameters are made gradually smaller, into which the posts 21 to 25 can be loosely fitted, and that can be extended and contracted in an up-down direction; a lighting unit 3 attached to the post 25 located on the innermost side; a raising and lowering unit 26 that extends and contracts, in the up-down direction, the posts 21 to 25 in conjunction with each other; a base 4 that the post 21 located on the outermost side is fixed to; and dampers 27a, 27b that connect a side surface of the post 21 located on the outermost side and a side surface of the post 22 located on the second outermost side.

公开(公告)号：US20190041049A1

公开(公告)日：2019-02-07

申请号：US16073851

申请日：2017-01-31

Applicant: LIGHTBOY CO., LTD.

Inventor： Hirotoshi ISHIZAWA ,  Atsushi ONISHI ,  Taichi ONODERA

IPC: F21V29/503 ,  F21V29/67 ,  F21V23/02 ,  F21V29/77 ,  F21S6/00 ,  F21V29/508 ,  F21V29/83 ,  F21V31/00

Abstract: An object is to provide an LED floodlight that enables efficient use of a cooling means, e.g., a heat dissipation fan, and can pursue a reduction in size. Therefore, it is an LED floodlight wherein a panel-shaped floodlight portion formed as a floodlight surface is formed such that a plurality of LEDs is arranged on a front surface, a heatsink having a plurality of heat dissipation plates on a back surface of the panel-shaped floodlight portion, and a cooling fan configured to send air toward a central portion of the heatsink are arranged in this order, the LED floodlight is formed of an appropriate power supply circuit, wherein a plurality of heat dissipation plates of a heatsink is radially arranged from a central portion to a periphery, a central portion of a coupling surface between heat dissipation plates of the heatsink protrudes toward a cooling fan configured to send air and has a curved surface portion from a central portion to a periphery.