LED lighting devices and LED lighting fixtures
The LED lighting device addresses the issue of darkening at the cover member ends by using a frame design with extended portions to ensure uniform illumination and improved aesthetics.
JP7863758B2Active Publication Date: 2026-05-22PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
- Filing Date
- 2024-04-25
- Publication Date
- 2026-05-22
AI Technical Summary
Technical Problem
Conventional LED lighting devices experience darkening at the widthwise ends of the cover member due to protruding frame portions, which affect the lighting fixture's appearance.
Method used
The LED lighting device incorporates a frame design with protruding portions that extend towards the light emission direction, featuring an outer and inner extended portion of the cover member to overlap with the frame's gap, ensuring light transmission and minimizing darkening.
Benefits of technology
This design effectively suppresses darkening at the widthwise ends of the cover member, enhancing the lighting fixture's uniform illumination and aesthetic appeal.
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Smart Images
Figure 0007863758000001 
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Figure 0007863758000003
Abstract
To provide an LED illuminating device that can restrain end parts in a width direction of a cover member from becoming dark.SOLUTION: An LED illuminating device 3 is housed in a concave part 2a of an appliance body 2, and comprises a board 11 on which an LED 12 is arranged, a frame 20 comprising a main plate part 21 fitted with the board 11, and a cover member 30 fitted to the frame 20. The frame 20 comprises protruding parts 22 located on both sides of the main plate part 21 in a short direction of the frame 20, and protruding toward a side of a first direction from the main plate part 21. The cover member 30 comprises a main part 31, and extended parts 32 protruding toward the LED 12 from an inner surface of the main part 31. The extended parts 32 comprise outer extended parts 32a, and inner extended parts 32b extending toward the side of the LED 12 so as to cover at least a portion of the protruding parts 22 from the outer extended parts 32a. Gaps G exist between the cover member 30 and an inner surface of the concave part 2a. The outer extended parts 32a comprise parts overlapping with the gaps G in the first direction.SELECTED DRAWING: Figure 3
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