LED bulb with transparent lampshade

[0014] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0015] Such as Figure 1-4 As shown, the LED bulb includes a lamp body 1, a transparent lamp cover 2, a light source 3, a reflective cover 4, and a power source (not shown). The light source 3 is a columnar light-emitting column, including a heat-conducting column 31, an aluminum substrate 32 and an LED lamp bead 33.

[0016] The lamp body 1 includes a connecting part 10, a screw mounting part 11 and a light source fixing plate 12. The connecting portion 10 is made of high-temperature resistant plastic, and is used to connect the threaded mounting portion 11 and the light source fixing plate 12 fixed at both ends thereof, and separate the threaded mounting portion 11 from the heat on the light source fixing plate 12 to improve the power supply Working temperature improves the service life of the power supply. The threaded mounting part 11 constitutes a standard interface for connecting with the lamp holder of the prior art. The power supply provided in the threaded mounting part 11 converts the AC mains provided by the lamp holder into low-voltage DC power required by the light source 3, and then drives the LED lamp beads 33 Glow. The heat generated by the power supply is dissipated through the screw mounting portion 11. The light source fixing plate 12 is made of a heat-conducting material, and a heat-conducting pillar 31 is fixed at the center of the upper part, and a transparent lampshade 2 made of glass material is fixed at the edge of the light source fixing plate 12 to transfer the heat on the heat-conducting pillar 31 The external heat exchange is performed on the transparent lampshade 2 to realize the function of the radiator, reduce the installation of the radiator, and reduce the manufacturing cost.

[0017] Six SMD LED lamp beads 33 are arranged in a single row along the axial direction of the light-emitting column 3 and fixed on the aluminum substrate 32 and electrically connected to the aluminum substrate 32 to form a group of light-emitting components. The radial cross-section is a square heat-conducting column 31 A set of light-emitting components are arranged on each radial surface of the, the aluminum substrate 32 is fixed on the radial surface of the heat-conducting pillar 31 by heat-dissipating silicone grease, and the bottom end of the heat-conducting pillar 31 is fixed at the center of the light source fixing plate 12 And transfer the heat of the heat-conducting column 31 to the light source fixing plate 12.

[0018] In order to enhance the luminous effect of the LED lamp beads 33, avoid the light emitted by the LED lamp beads 33 from being reflected back or being interfered by the light emitted by the LED lamp beads 33 on the adjacent side of the heat-conducting column 31, causing mutual cancellation. And the upper part of the connecting portion 10 is equipped with a reflective cover 4, the reflective cover 4 includes a cylinder 41 and a bottom plate 42, wherein the cylinder 41 is sleeved on the radial outer contour of the light-emitting column 3, and the adjacent two groups of light-emitting components The LED lamp beads 33 are separated, and a light-transmitting hole 410 is provided at the position corresponding to the LED lamp beads 33. The top of the barrel 41 is closed to avoid discomfort caused by human eyes looking directly at the LED lamp bead 33 directly in front of the LED bulb. It should be noted that LED bulbs are generally installed in the lamp tube for use. LED bulbs, human eyes will not directly see the LED lamp beads 33.

[0019] The radial edge of the bottom end of the cylinder 41 extends outward to cover the horn-shaped bottom plate 42 of the upper connecting portion 10 of the lamp body 1. The horn-shaped structure of the bottom plate 42 enables the light to be reflected directly outside the LED bulb, thereby avoiding The light rays in the transparent lampshade 2 are mutually offset. The bottom plate 42 is also provided with a convex portion 420. The convex portion 420 is set corresponding to the position of the light transmission hole 410. Specifically, the convex portion 420 is set directly in front of the light transmission hole 410 toward the bottom plate. 42 on the projection surface, so that the convex portion 420 can function as a convex mirror, and the light energy emitted by the light-transmitting hole 410 is diffused and reflected through the convex portion 420, so that the light emitted by the LED bulb is softer and uniform, in order to further enhance the reflection As a result, a reflective film is provided on the reflective cover 4 to reduce light loss.

[0020] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the technical solution of the present invention.