LED lamp with light-diffusing end cap

摘要

An LED lamp includes a plurality of LED modules arranged in direction x, a tubular enclosure for housing the LED modules that is open at ends spaced from each other in direction x, and end caps respectively closing the ends of the tubular enclosure in direction x. Each of the end caps is configured to diffuse light from the LED modules while transmitting the light, and includes an emission surface for emitting light in a direction z perpendicular to direction x. This arrangement ensures that the LED lamp has a good appearance even when it is made long.

主权项

1. An LED lighting apparatus comprising:
an LED module that comprises a substrate, and a plurality of LED chips disposed on the substrate, wherein the LED chips are arranged in a first direction and form a plurality of rows spaced from each other in a second direction perpendicular to the first direction, and the LED chips in one of two adjacent rows and the LED chips in the other one of the two adjacent rows are deviated from each other in the first direction to form a staggered arrangement; a support member supporting the substrate and elongated in the first direction; and a diffusion cover connected to the support member and covering the LED chips for diffusing light from the LED chips and emitting the light to outside; wherein the diffusion cover includes a strong diffusion region that includes a portion closest to the LED chips as viewed in the first direction and that diffuses light from the LED chips to a higher degree than an average for an entirety of the diffusion cover, and the strong diffusion region is lower in light transmittance than other portions of the diffusion cover.