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LED unit

A technology for a cover part and a mounting substrate, which is applied in the field of LED units, can solve the problems of uneven light emission, difficulty in obtaining light emission from LED units, and the like

Inactive Publication Date: 2013-04-10
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In lighting fixtures, only LED units in which LEDs are arranged in a straight line are used instead of straight fluorescent tubes used in conventional lighting fixtures, which tends to cause uneven light emission
That is, even if a plurality of LEDs are arranged in a straight line, it tends to be difficult for the LED unit to obtain uniform light emission equal to or higher than that of a straight-tube fluorescent tube.

Method used

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Embodiment approach 1

[0027] Below, based on Figure 1 to Figure 8 The LED unit 10 of Embodiment 1 will be described. Throughout the drawings, the same reference signs are assigned to the same or similar parts, and explanations thereof are omitted. In addition, the same code|symbol is attached|subjected to the same member in a figure.

[0028] The LED unit 10 of this embodiment has LED1a; The mounting board|substrate 2 is formed in the shape of a long plate, and several LED1a is mounted on the one surface 2aa side along the longitudinal direction. In addition, the LED unit 10 has a bottom 3c1 facing the one surface 2aa of the mounting substrate 2 and sidewalls 3c2, 3c2 extending from the bottom 3c1 to the mounting substrate 2, and has a C-shaped cross section covering the mounting substrate 2. Translucent cover portion 3 .

[0029] In particular, as Figure 1 to Figure 5 As shown, on the inner surface 3b side of the cover part 3 opposite to the LED1a, in the longitudinal direction of the cover ...

Embodiment approach 2

[0064] The difference is that, in the LED unit 10 of this embodiment, instead of covering the mounting substrate 2 with the cover portion 3 formed in a long rectangular box shape as in the first embodiment, a plurality (here, two) are connected. The long rectangular box-shaped cover portions 3 of the cover portions 3A and 3B cover the mounting substrate 2 . In addition, the LED unit 10 of this embodiment omits and demonstrates drawing except the structure of the cover part 3 which differs from the LED unit 10 of Embodiment 1. FIG. In addition, in the LED unit 10 of this embodiment, the same code|symbol is attached|subjected to the same component as Embodiment 1, and overlapping description is abbreviate|omitted suitably.

[0065] Such as Figure 9 as well as Figure 10 As shown, the cover part 3 of the LED unit 10 of this embodiment is comprised by connecting cover part 3A, 3B along the longitudinal direction of the cover part 3. In the cover part 3, the connection part 3Aa...

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Abstract

The invention provides an LED unit (10) which has an LED (1a); an installation substrate (2) which is a long plate shape and where a plurality of LEDs (1a) are installed along the length direction on one surface (2aa);and a shield portion (3) which has a bottom (3c1) facing one surface (2aa) of the installation substrate (2) and sidewall portions (3c2, 3c2) extending from the bottom (3c1) to the installation substrate (2). The section of the shield portion covering the installation substrate (2) is a C shape, and the shield portion (3) is long and translucent. A plurality of first protrusion bar portions (3ba) in width direction of the shield portion (3) is arranged on the internal surface (3b) of the shield portion (3) facing the LED (1a) on the length direction. A plurality of second protrusion bar portions (3aa) in length direction of the shield portion (3) is arranged on at least part of the external surface (3a) of the shield portion (3) on the width direction.

Description

technical field [0001] The invention relates to an LED unit using LED as a light source. Background technique [0002] In recent years, lighting fixtures including LED units using LEDs (Light Emitting Diodes), which have low power consumption, small size, and long life compared with fluorescent lamps, are being used due to increased environmental awareness. [0003] As such a lighting fixture, for example, a lighting fixture having a long mounting base having a U-shaped cross section and a cover fitted to an upper portion of the mounting base and arranging a plurality of LEDs inside is known (for example, Patent Document 1). [0004] In the lighting fixture of Patent Document 1, the cover is fitted to the mounting base so as to cover the upper opening of the mounting base, and is made of a transparent insulating material such as acrylic resin or glass. LEDs mounted on the board are arranged at predetermined intervals on the upper portion inside the cover. With the LED unit...

Claims

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Application Information

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IPC IPC(8): F21S2/00F21V15/02F21V19/00F21Y101/02
Inventor 宫原荣二溝谷彻秋田宽齐藤优子今安一哉村上久典
Owner PANASONIC CORP