Vehicle lighting unit control device
US-10813190-B2 · Oct 20, 2020 · US
Cooling of lighting devices
Cooling of lighting devices · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F21S45/40 |
| Official title | Cooling of lighting devices |
| Display label | Cooling of lighting devices |
| Total patents | 106 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 8 |
| 2017 | 8 |
| 2018 | 14 |
| 2019 | 18 |
| 2020 | 8 |
| 2021 | 8 |
| 2022 | 5 |
| 2023 | 11 |
| 2024 | 16 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat Sink and Vehicle Headlight
US-2020232621-A1 · Jul 23, 2020 · US
Lighting device having an LED, thermistor and resistor connected in series with a heat conduction suppressor configured to suppress heat to the thermistor
US-10677413-B2 · Jun 9, 2020 · US
Vehicle lamp assembly having an improved heat sink with light shield
US-10544915-B2 · Jan 28, 2020 · US
Lighting device
US-2019376662-A1 · Dec 12, 2019 · US
Vehicular lamp
US-2019376659-A1 · Dec 12, 2019 · US
Vehicle lighting device and vehicle lamp
US-10502389-B2 · Dec 10, 2019 · US
Vehicular headlight
US-2019368682-A1 · Dec 5, 2019 · US
Rotary light module
US-10393358-B2 · Aug 27, 2019 · US
Vehicle lighting unit control device
US-2019200430-A1 · Jun 27, 2019 · US
Device for preventing dewing of headlamp
US-10330278-B2 · Jun 25, 2019 · US
Vehicle lighting fixture
US-2019170316-A1 · Jun 6, 2019 · US
Lighting module for motor vehicle projector
US-2019154226-A1 · May 23, 2019 · US
Light device for a vehicle
US-2019145602-A1 · May 16, 2019 · US
Low and high beam LED lamp
US-10260684-B2 · Apr 16, 2019 · US
Rotary light module
US-10260728-B2 · Apr 16, 2019 · US
Vehicle lamp with articulated multi-piece heat sink
US-10247383-B2 · Apr 2, 2019 · US
Vehicle headlamp
US-10247379-B2 · Apr 2, 2019 · US
Vehicle Lighting Device and Vehicle Lamp
US-2019093850-A1 · Mar 28, 2019 · US
Headlamp and mobile object
US-10239443-B2 · Mar 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F21S45/40?
- CPC F21S45/40 is the Cooperative Patent Classification code for “Cooling of lighting devices.”
- How many patents are filed under CPC F21S45/40 (Cooling of lighting devices)?
- Our database includes 106 publications tagged with this CPC code.
- Is patent activity under CPC F21S45/40 growing?
- Publication counts under this code: 16 in 2024 vs 2 in 2025 (latest complete years).