Induction heating device having improved indicator structure
US10856369B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2018 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Jan 22, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B40/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An induction heating device includes a case, a cover plate, a working coil, a base plate, a light guide that is located around the working coil and includes a light-emitting surface that indicates an output intensity of the working coil or an operation state of the working coil, and a light-emitting element that emits light toward the light guide. The light guide includes a light-guiding portion that has a lower surface having a parabolic shape and an upper surface including the light-emitting surface in which the upper surface extends in a first direction farther than the lower surface, and a light-guiding support that couples to the base plate, that surrounds at least a portion of the light-guiding portion, and that reflects, toward the light-guiding portion, at least one of light that has been emitted from the light-emitting element or light that has been guided through the light-guiding portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.