Illumination Push Button Dome Lens Light Guide Member
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Solution Overview
Problem
Conventional illumination-type push button devices for game machines have a high parts count due to the use of additional components like a douser to prevent light leakage between light sources, which complicates the design and increases complexity.
Innovation Solution
The design incorporates a diffusing lens with a dome shape and a light guide member that directs light from both light sources, reducing the need for additional components by using the lens's shape and structure to prevent light leakage and guide light effectively, while maintaining clear separation of light paths between the first and second light sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a douser (shielding plate) is attached between the first light source and the second light source to prevent light leakage, then light path separation is improved, but parts count increases
Solution Approach 1:
The patent merges the light guide function and the light path separation function into a single integrated light guide member. The light guide member has a specific structure with a first light guide portion and a second light guide portion that are spatially separated, eliminating the need for a separate douser while maintaining effective light path separation between the first and second light sources
Solution Approach 2:
The light guide member serves multiple functions simultaneously: it guides light from both the first and second light sources to their respective display portions, and it acts as a built-in shielding structure to prevent cross-contamination of light paths. This multi-functionality reduces the overall parts count while maintaining reliability
2Reliability
If a douser and light guide plate are used together to prevent light leakage, then light path separation is improved, but device complexity increases
Solution Approach 1:
The patent combines the light guide plate and douser into a single integrated light guide member structure. The light guide member has a body portion that serves as the light guide plate, with integrated light guide portions that extend toward the display portions, eliminating the need for separate components and reducing structural complexity
Solution Approach 2:
The light guide member is segmented into functional regions (first light guide portion, second light guide portion, body portion) that perform different functions, allowing complex light path management to be achieved through a single component rather than multiple assembled parts
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 reduces the parts count, enhances light guidance and diffusion, and allows for clear differentiation of light areas, improving the visual appeal and functionality of the push button device without the need for additional shielding components.
Implementation Method 1
the diffusing lens is configured such that light of the second light source portion enters the diffusing lens from the back surface, and is diffused from the front surface of the diffusing lens, thereby being irradiated to an outside of the device
Implementation Method 2
the light guide member is configured such that light of the first light source portion enters the light guide member from an incident surface opposed to the first light source portion on the one end side of the light guide member to be guided inside the light guide member
Data Source
AI summary
An illumination-type push button device including a board for light source, a diffusing lens having a dome shape, a first light source portion and a second light source portion, and a light guide member, where the diffusing lens is configured such that light of the second light source portion enters the diffusing lens from a back surface, and is diffused from a front surface of the diffusing lens, thereby being irradiated to an outside of the device, and the light guide member is configured such that light of the first light source portion enters the light guide member from an incident surface opposed to the first light source portion on the one end side of the light guide member to be guided inside the light guide member, and exits from an outgoing surface on the other end side of the light guide member, thereby being irradiated to the outside.