KEYCHAIN ​​FOR A VEHICLE

The key fob illuminates the manufacturer's emblem using an inductively powered LED within an electromagnetic field, addressing visibility and energy efficiency issues, enhancing user experience and brand aesthetics.

DE102024139136A1Pending Publication Date: 2026-05-21MERCEDES BENZ GROUP AG
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
MERCEDES BENZ GROUP AG
Filing Date
2024-12-20
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

Existing key fobs struggle to make the manufacturer's brand emblem visible in poor lighting conditions inside a vehicle, consume excessive energy for continuous illumination, and do not efficiently conserve battery life when the engine is off.

Method used

A key fob with a transparent section, an integrated emblem, and a wireless, inductively coupled LED that illuminates via an electromagnetic field generated by a coil in the vehicle's predefined slot, powered by a PCB to conserve energy and flash when the engine is off.

Benefits of technology

Enables easy location of the key fob in poor lighting, enhances brand aesthetics, and conserves battery life by illuminating only when needed, fostering a sense of ownership and pride.

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Abstract

A key fob (100) for a vehicle comprises a housing (102) with a transparent section (102A). The key fob (100) includes an emblem (104) located inside the housing (102) behind the transparent section (102A), and at least one light source (106) located behind the emblem (104) to illuminate the emblem (104). The illumination of the emblem (104) through the transparent section (102A) enables a user of the vehicle to locate the key fob (100) in poor lighting conditions inside the interior (200) and also allows the user to find the key fob (100) again.
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Citation Information

Patent Citations

  • Vehicle key for wireless access system

    DE102009019629B4