Doorbell Light Source Offset for Compact Waterproof Design

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Solution Overview

Problem

Conventional doorbell designs with backlighting suffer from substantial space loss at the rear of the actuating member, limiting the compactness and outdoor durability due to the placement of the light source.

Innovation Solution

The electronic device features a light source offset from the through opening of the interaction facade, using an optical guide zone to illuminate the actuating member, allowing for a more compact design and incorporating a sealed wall to protect against humidity and dust, while the actuating rod transmits force only in the actuation position, optimizing space usage and durability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If the light source is arranged at the rear of the actuating member to backlight it, then the actuating member is illuminated for visibility in the dark, but substantial space is lost at the rear of the actuating member

Engineering Contradiction:

Improvebacklighting of actuating memberVSAvoidspace at rear of actuating member

Core Design Contradiction:

Illumination intensityVSVolume of stationary object

Solution Approach 1:

The light source is positioned laterally offset from the through-opening rather than at the rear, changing the spatial dimension of illumination. The optical guide zone directs light from this lateral position through the actuating member, achieving backlighting效果 while preserving rear space for the buzzer component.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

An optical guide zone is introduced as an intermediary element between the offset light source and the actuating member. This optical guide transmits light radiation from the lateral light source through the actuating member, enabling illumination without requiring the light source to be positioned at the rear.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Illumination intensity

If the light source and actuator are positioned at the rear of the through opening, then the actuating member can be illuminated, but the device bulk increases and waterproofing becomes more difficult

Engineering Contradiction:

Improveillumination of actuating memberVSAvoidprotection against humidity and dust

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The light source is extracted from the rear position of the through-opening and relocated to a lateral offset position. This extraction removes the light source from the space-constrained rear area, reducing device bulk and simplifying the waterproof sealing structure while maintaining illumination functionality through the optical guide zone.

Inventive Principle:

Principle #2Taking out (Extraction)

3Ease of operation

If the actuator is positioned at the rear of the through opening, then it can be actuated by the actuating member, but space efficiency is reduced

Engineering Contradiction:

Improveactuation of buzzerVSAvoidrear space of housing

Core Design Contradiction:

Ease of operationVSVolume of stationary object

Solution Approach 1:

The actuator is positioned laterally offset from the through-opening rather than at the rear, changing its spatial arrangement. The actuating rod extends laterally to connect the actuating member with the offset actuator, maintaining the actuation function while optimizing space utilization in the housing.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration minimizes bulk at the rear of the housing, allows for a waterproof and dust-proof design suitable for outdoor use, and provides efficient illumination of the actuating member, enhancing the device's compactness and functionality.

Implementation Method 1

the actuating member comprises a first optical guide zone extending in the extension of the support interface and opposite from an internal face of the wall of the interaction facade and in the direction of the light source to transmit light radiation emitted by said at least one light source

Methodology Applied

Scientific EffectOptical guidance: Waveguide (optics)

Data Source

PatentEP3367525B1Electronic apparatus such as a doorbell

Publication Date: 2020.06.10 HAGER SECURITY SAS

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AI summary

The present invention relates to an electronic device comprising a housing forming a compartment delimited by a peripheral wall (3), a support face (3') and an interaction face (4), the interaction face (4) comprising a wall (4') in which a through-hole (4") is provided, the actuation member (5) comprising a support interface (6) closing said through-hole (4"), said compartment receiving an electronic board (7) comprising a support (8) on which an actuator (10) and a light source (11) are mounted. The light source (11) is offset from the through-hole (4") in the wall (4') of the interaction face (4), the actuation member (5) is made of at least one transparent material, and the actuation member (5) comprises a first optical guidance zone for transmitting light emitted by said at least one light source (11) to illuminate said support interface (6).