Lighting Apparatus Reflector Spiral Guide Compact Design
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Solution Overview
Problem
The existing lighting apparatus requires a large number of parts for light distribution control, vertical rotation, and horizontal rotation mechanisms, leading to increased manufacturing costs and a bulky design, which complicates assembly and hinders the achievement of a slim, compact form.
Innovation Solution
A simplified lighting apparatus design featuring a light source unit with a reflector having a spiral guide portion, a movable body with an engaging projection, and a support that allows for light distribution angle adjustment, along with a gear train-based mechanism for horizontal and vertical angle adjustments, reducing the number of components and eliminating the need for bulky parts like geared belts and tension pulleys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple mirror pieces and control mechanisms are used to change the shape of the concave mirror for light distribution control, then the light distribution can be adjusted, but the number of parts increases and manufacturing cost increases
Solution Approach 1:
The patent combines multiple mirror pieces into a single integrated reflector with a rotationally symmetric cross-sectional shape. This unified reflector structure eliminates the need for separate mirror pieces and their associated control mechanisms, thereby reducing the number of parts while maintaining light distribution control capability through the reflector's geometric design
Solution Approach 2:
The patent uses a reflector with a specific rotationally symmetric cross-sectional shape where parameters such as the curvature radius R1 of the first curved surface and R2 of the second curved surface are optimized. By changing the geometric parameters of the reflector, light distribution control is achieved without requiring multiple adjustable mirror pieces
2Adaptability or versatility
If a mechanism with gear, geared belt, and tension pulley is used for vertical rotation control, then the lamp body can be rotated vertically, but the arm outer shape becomes bigger and the arm thickness increases
Solution Approach 1:
The patent extracts the tension pulley and geared belt from the arm structure and relocates them to the base portion. This extraction eliminates the need for additional space within the arm, allowing the arm to maintain a slim profile while still achieving vertical rotation control through the relocated mechanism
Solution Approach 2:
The patent relocates the vertical rotation control mechanism from the arm dimension to the base portion dimension. By moving the mechanism to a different spatial location (the base), the arm structure is freed from accommodating these components, enabling a slimmer arm design
3Adaptability or versatility
If a mechanism with gear, geared belt, and tension pulley is used for horizontal rotation control, then the arm can be rotated horizontally, but the number of parts increases and manufacturing cost increases
Solution Approach 1:
The patent combines the horizontal rotation control mechanism with the vertical rotation control mechanism by locating both in the base portion. This merging of functions into a single location eliminates the need for separate mechanisms in different locations, reducing the overall number of parts and simplifying the structure
Solution Approach 2:
The base portion is designed to serve multiple functions: it houses both the vertical rotation control mechanism and the horizontal rotation control mechanism. This multi-functional design allows a single structural element to perform multiple control functions, reducing the total number of components needed
4Adaptability or versatility
If multiple parts are used in the horizontal rotation mechanism, then the rotation control can be achieved, but the mechanism becomes less compact and the appearance is compromised
Solution Approach 1:
The patent merges the horizontal rotation mechanism with the vertical rotation mechanism into a single integrated system in the base portion. This consolidation reduces the total volume occupied by these mechanisms while maintaining their rotational control functions, achieving a more compact overall design
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
The solution results in a cost-effective, compact, and slim lighting apparatus with reduced manufacturing costs and improved design aesthetics by minimizing the number of parts and simplifying assembly processes.
Implementation Method 1
a reflector provided with a spiral guide portion in a peripheral surface of the reflector and configured to reflect light emitted from the light source
Data Source
AI summary
A lighting apparatus includes a light source unit having a light source portion configured to mount a light source thereon, and a light distribution angle adjusting means coupled to the light source portion and configured to change an irradiation range of the light source. The light distribution angle adjusting means includes a reflector provided with a spiral guide portion in a peripheral surface thereof and configured to reflect a light emitted from the light source, a movable body having an engaging portion configured to slidably engage the guide portion and a control portion configured to limit a direction of a movement to a rotation axis direction of the reflector, a support configured to support a movement of the movable body in the rotation axis direction of the reflector, and an optical component secured to the movable body and configured to change a light path of the light.