Door Intercom Label Illumination via Button Window

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Solution Overview

Problem

Vandal-proof labels used in electric door entry systems pose challenges with illumination due to their non-translucency, requiring direct lighting which complicates manufacturing and makes the label holder block more susceptible to vandalism.

Innovation Solution

A label holder block design featuring a call button with a window in its side face and a lighting device positioned inside, allowing light to pass through for direct illumination without additional protrusions, using a light guide and screen to enhance illumination and legibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If direct lighting is used to illuminate vandal-proof labels, then illumination of the label is achieved, but the label holder block becomes more susceptible to vandalism and manufacturing complexity increases

Engineering Contradiction:

Improvelabel illuminationVSAvoidvandalism susceptibility

Core Design Contradiction:

Illumination intensityVSObject-affected harmful factors

Solution Approach 1:

The lighting device is nested inside the call button, with the light source housed within the button body and the light beam exiting through a window in the button's front face. This nesting eliminates the need for external protrusions while maintaining direct illumination capability, thereby reducing vandalism susceptibility without compromising lighting effectiveness.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The call button is designed to serve multiple functions: it acts as both the illumination device (housing the light source and directing light through its window) and the calling mechanism (with its pressable structure for triggering the intercom). This multi-functionality eliminates the need for separate protruding lighting elements, simplifying the block structure and reducing vulnerability to vandalism.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Illumination intensity

If a protrusion is added to house the light source, then direct illumination of the label is achieved, but the manufacturing complexity of the label holder block increases

Engineering Contradiction:

Improvelabel illuminationVSAvoidblock structure

Core Design Contradiction:

Illumination intensityVSDevice complexity

Solution Approach 1:

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The lighting function is merged with the call button structure. The button body houses the light source, the button's front face provides the light exit window, and the button's pressing mechanism remains functional. This merging eliminates the need for additional protrusions and reduces manufacturing complexity by utilizing existing structural elements for dual purposes.

Inventive Principle:

Principle #5Merging (Combining)

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

Enables effective direct illumination of the label without additional protrusions, simplifying manufacturing and reducing vulnerability to vandalism, while ensuring high legibility and uniform lighting.

Implementation Method 1

the guide comprises an input face facing the light source and an output face received in the window of the button

Methodology Applied

Scientific EffectTotal internal reflection: Total Internal Reflection

Implementation Method 2

the entry face is a collimating lens

Methodology Applied

Scientific EffectCollimation: Lens

Implementation Method 3

the guide comprises reflecting internal faces to direct the beam from the entrance face towards the exit face

Methodology Applied

Scientific EffectReflection: Reflection

Implementation Method 4

one of the internal faces being concave shape to increase the concentration of the rays of the light beam in a first portion of the exit face

Methodology Applied

Scientific EffectConcentration of light rays: Focusing

Implementation Method 5

the block comprises a screen comprising a reflecting face facing the front face of the label, the screen being arranged on the side of the label opposite the side where the call button is located so that the reflecting face reflects the beam radiated by the lighting device towards the front face of this label

Methodology Applied

Scientific EffectReflection: Reflection

Data Source

PatentEP2456188B1Label holder for door intercom

Publication Date: 2013.03.27 COGELEC

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AI summary

The block has a call button (78a) moving between rest and retracted positions. A lighting device directly radiates a light beam on a front face (79) of a label (74a), where the device is sufficiently powerful such that illumination produced by the device is greater than 30 lux. The call button has a window (88) arranged in an upper part of a side face (84) of the button. The lighting device is partially located inside the button facing the window, so that the light beam passes through the window. An independent claim is also included for an electrical door opener of house, comprising a label holder block.