LED lighting device and LED lighting fixture

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AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By positioning the cover member's mounting portion between the side plate portion of the frame and the side portion of the fixture body, the LED lighting device addresses the issue of abnormal noise caused by thermal expansion differences, achieving quieter operation.

WO2025057731A1 Publication Date: 2025-03-20PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

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Patent Information

Application Number: PCT/JP2024/030600
Authority / Receiving Office: WO · WO
Patent Type: Applications
Current Assignee / Owner
Priority Date: 2023-09-14
Filing Date: 2024-08-28
Publication Date: 2025-03-20

Application Information

Patent Timeline

14 Sep 2023

Priority

28 Aug 2024

Application

PCT/JP2024/030600

20 Mar 2025

Publication

WO2025057731A1

IPC: F21S8/04; F21S2/00; F21V19/00; F21Y115/10

CPC: F21Y2115/10; F21S8/04; F21S2/00; F21V19/00

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Application Domain

Light fastenings Semiconductor devices for light sources

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AI Technical Summary

Technical Problem

Existing LED lighting fixtures experience abnormal noise due to the contact between the resin cover member's mounting portion and the metal fixture body, caused by thermal expansion differences.

Method used

The LED lighting device is designed with a specific configuration where the cover member's mounting portion is positioned between the side plate portion of the frame and the side portion of the fixture body, preventing direct contact and thus reducing noise.

Benefits of technology

This configuration effectively suppresses abnormal noises generated by the LED lighting device when attached to the fixture body, enhancing operational quietness and reliability.

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Abstract

An LED lighting device (3) is provided with: a light source part (10); an elongate frame (20) having a main plate part (21) to which the light source unit (10) is attached; and an elongate cover member (30) attached to the frame (20). The frame (20) has a side plate part (24) extending toward the side opposite from the light emission side of the light source part (10). The cover member (30) has a main part (31) covering the light source part (10), and an attachment part (33) attached to the side plate part (24) and extending toward the side opposite from the light emission side of the light source part (10). When the LED lighting device (3) is attached to a fixture body (2), the attachment part (33) is positioned between the side plate part (24) and a side surface part (2f) of the fixture body (2). The LED lighting device (3) has a site located closer to the side surface part (2f) side of the fixture body (2) than to the attachment part (33).

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