Drum Image Projection System Using Internal Mirror Reflection
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Solution Overview
Problem
Current percussion instruments, such as bass drums, lack a means to dynamically project images or videos onto their surfaces without requiring disassembly or obstructing their functionality, limiting creative expression and advertising opportunities for manufacturers.
Innovation Solution
A projection system for a drum that includes a projector and adjustable stand, which can be placed inside the drum through a hole in the drumhead, using a mirror to reflect the image onto the exterior surface, allowing for still or moving images to be displayed, and can be connected to various devices for real-time or stored image playback.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a projector is installed inside the drum to project images onto the drumhead, then visual display capability is improved, but the drum's structural integrity and functionality may be compromised
Solution Approach 1:
The projector and mirror assembly is nested within the drum's existing structure, utilizing the drum's internal cavity space. The projector mounts to the rear drumhead and the mirror attaches to the front drumhead, creating a compact nested arrangement that fits within the drum's cylindrical body without requiring structural modifications to the drum shell or compromising its integrity.
Solution Approach 2:
The projection system is segmented into separate components: the projector unit, the mirror assembly, and the mounting hardware. This segmentation allows each component to be independently installed and adjusted, and enables the system to be removed or modified without affecting the drum's core functionality. The projector can be mounted to the rear drumhead while the mirror is separately attached to the front drumhead.
2Ease of operation
If the projector and stand are made collapsible to fit through the drumhead hole, then ease of installation is improved, but device complexity increases
Solution Approach 1:
The stand incorporates collapsible and telescoping elements that allow it to transition between extended and compact states. During installation, the stand can be collapsed to fit through the drumhead access hole, then extended and adjusted to provide stable support for the projector and mirror assembly once inside the drum. This dynamic structure enables easy installation while maintaining operational stability.
3Area of stationary object
If the projector is positioned close to the front drumhead to maximize image size, then image visibility is improved, but access for installation and adjustment becomes difficult
Solution Approach 1:
The mirror is extracted as a separate component that can be attached to the front drumhead from the outside, while the projector remains inside the drum. This extraction allows the mirror to be positioned at the optimal location on the front drumhead to maximize image size and visibility, while the projector can be installed and adjusted from within the drum through the rear drumhead access. The mirror mounting is designed to be removable, facilitating installation and adjustment without requiring access to the interior space between the drumheads.
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 the projection of dynamic images onto the drumhead without disassembling the instrument, enhancing visual performance and advertising capabilities while maintaining the drum's functionality, accommodating various drum sizes and types, and integrating with different devices for versatile use.
Implementation Method 1
The projector is placed in the interior of the drum, close to the front resonant drum head end which projects an image to a mirror, located in the interior of the drum, close to the batter drum head. The projected image is reflected by the mirror to the interior back side of the resonant drum head to produce still or moving images capable of being seen by the audience.
Data Source
AI summary
An image projection system for a drum, including a batter drum head and a resonant drum head. The image projection system includes a projector support configured to support an image projector providing an image, a mirror; and a mirror support. The mirror support is configured to support the mirror, wherein the projector support and the mirror support are adjustably coupled to each other. An image is projected toward the mirror and reflected toward an interior surface of the resonant drum. The projected image is configured to provide an image viewable on an exterior surface of the resonant drumhead.