JP3176787U - Fluorescent lamp type LED lighting tube - Google Patents

Abstract

The present invention provides a fluorescent lamp type LED illumination tube capable of obtaining an irradiation angle similar to that of a fluorescent lamp.
An irradiation angle of the LED is provided by providing a light transmission diffusion film that diffuses and diffuses the light on the inner peripheral wall of an exterior facing the light emitted from the LED, and transmits the light with a predetermined transmittance. Are formed radially with respect to the axial direction of the exterior 13 to form the fluorescent lamp type LED lighting tube 1.
[Selection] Figure 6

Description

  The present invention relates to a fluorescent lamp type LED (light emitting diode) lighting tube, and more particularly to a fluorescent lamp type LED lighting tube capable of obtaining the same irradiation angle as a conventional fluorescent lamp.

  In general, a cylindrical straight tube fluorescent lamp is provided with energizing pins at both ends, and the pins at both ends are connected to both ends of the U-shaped illumination tube mounting portion previously installed on the ceiling or the like. Each of the holes (attachment portions) is electrically inserted to allow current to flow through the fluorescent lamp and enable illumination. The energizing pins provided at the end of the fluorescent lamp are, for example, two round pins, and the holes at both ends correspond to the round pins.

  By the way, in recent years, with the widespread use of LEDs (light emitting diodes), fluorescent lamp type LED lighting tubes have come to be marketed. Here, the fluorescent lamp type LED illuminating tube has a structure that can be mounted on an illuminating tube mounting portion where a conventional fluorescent lamp is installed, and is processed into a cylindrical straight tube type. Each energizing pin is provided. Thereby, the fluorescent lamp type LED lighting tube can be mounted as it is on the lighting tube mounting portion on which the conventional fluorescent lamp is mounted, and is supplied to the market as an alternative to the conventional fluorescent lamp.

  Here, as a technique using the LED, for example, in Japanese Patent Application Laid-Open No. 2006-164928 (Patent Document 1), in order to make the illumination in the curtain behind the stage such as a theater uniform, a base to which the LED is attached is provided. A technique for adjusting the irradiation angle of the LED by making it movable is disclosed.

  Japanese Unexamined Patent Application Publication No. 2002-150803 (Patent Document 2) discloses a line-of-sight illumination device and a surgical illumination system using LEDs.

  Furthermore, Japanese Unexamined Patent Application Publication No. 2002-008023 (Patent Document 3) discloses a face information matching system using LEDs.

  The Nikkan Kogyo Shimbun (Non-patent Document 1) discloses a fluorescent lamp type LED lighting tube that is a conventional fluorescent lamp in which a plurality of LEDs are arranged in an axial direction on a straight fluorescent lamp. .

JP 2006-164928 A JP 2002-150803 A JP 2002-008023 A

Nikkan Kogyo Shimbun (Posted July 08, 2011)

  By the way, LED can obtain light with linearity by the light emission principle (electroluminescence effect). Therefore, the fluorescent lamp type LED illumination tube has a feature that the illuminance in the direction in which the LED emits light is remarkably high (bright) and the illuminance in other directions is low (dark) as compared with the conventional fluorescent lamp. That is, in the fluorescent lamp type LED lighting tube using the LED, only a specific direction becomes extremely dazzling.

  On the other hand, in a conventional fluorescent lamp, discharge is performed inside a glass tube, and ultraviolet rays generated by the discharge are applied to a phosphor previously applied to the inner peripheral wall of the glass tube and converted into visible light. Thereby, the visible light (light) is emitted radially with respect to the axial direction of the glass tube, and uniformly irradiates the periphery of the fluorescent lamp.

  That is, the fluorescent lamp type LED lighting tube has a problem that the conventional fluorescent lamp cannot be substituted because the irradiation angle of light is significantly different from that of the conventional fluorescent lamp.

  Accordingly, the present invention has been made to solve the above-described problems, and an object thereof is to provide a fluorescent lamp type LED lighting tube capable of obtaining the same irradiation angle as that of a conventional fluorescent lamp.

  In order to solve the above-mentioned problems and achieve the object, the fluorescent lamp type LED lighting tube according to the present invention corresponds to the semi-cylindrical string of the semi-cylindrical base material having a substantially semi-circular cross section. The plurality of LEDs that emit light in the vertical direction from the planar portion are arranged along the axial direction of the base material on the planar portion. Next, the fluorescent lamp type LED lighting tube is fixed to a flat portion of the base material, a semi-cylindrical transparent exterior, and a pair of holders attached to both ends of the base material and the exterior, A current-carrying pin that is electrically connected to each LED is provided. Further, the following configuration is adopted.

  The fluorescent lamp type LED lighting tube is provided with a light transmissive diffusion film that diffuses the light by irregularly reflecting and diffusing the light on the entire inner peripheral wall of the exterior facing the light emitted from the LED. Thus, the irradiation angle of the LED is made radial with respect to the axial direction of the exterior.

  According to the fluorescent lamp type LED illumination tube according to the present invention, it is possible to obtain an irradiation angle similar to that of a conventional fluorescent lamp.

It is a top view of the fluorescent lamp type LED illumination tube which concerns on this invention. It is a bottom view of the fluorescent lamp type LED illumination tube according to the present invention. It is a front view of the fluorescent lamp type LED illumination tube according to the present invention. It is a left view of the fluorescent lamp type LED illumination tube according to the present invention. It is a perspective view of the fluorescent lamp type LED illumination tube according to the present invention. It is an AA line sectional view of a fluorescent lamp type LED lighting tube concerning the present invention.

  Embodiments of a fluorescent lamp type LED lighting tube according to the present invention will be described below with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: The thing of the character which limits the technical scope of this invention is not.

  FIG. 1 is a plan view of a fluorescent lamp type LED lighting tube 1 according to the present invention, and FIG. 2 is a bottom view of the fluorescent lamp type LED lighting tube 1 according to the present invention. FIG. 3 is a front view of the fluorescent lamp type LED lighting tube 1 according to the present invention. In addition, since the rear view of the fluorescent lamp type LED lighting tube 1 according to the present invention appears in the same manner as the front view, it is omitted. 4 is a left side view of the fluorescent lamp type LED lighting tube 1 according to the present invention, and FIG. 5 is a perspective view of the fluorescent lamp type LED lighting tube 1 according to the present invention. FIG. 6 is a cross-sectional view taken along line AA of the fluorescent lamp type LED lighting tube 1 according to the present invention.

  As shown in FIG. 1 to FIG. 6, the fluorescent lamp type LED lighting tube 1 according to the present invention includes a base material 11, a plurality of LEDs (light emitting diodes) 12, an exterior 13, and a pair of holders 14 a and 14 b. I have.

  The base material 11 has a semi-cylindrical shape with a substantially semicircular cross section, and emits light in a vertical direction from the flat surface part 11a to the flat surface part 11a corresponding to the substantially semicircular string of the base material. A plurality of LEDs 12 are arranged in two rows along the axial direction of the substrate 11.

  As a result, all the light emitted from the LED 12 travels outward in a direction perpendicular to the flat surface portion 11a, so that the illuminance of the surface (portion) facing the flat surface portion 11a becomes extremely high (bright). .

  In the embodiment of the fluorescent lamp type LED lighting tube according to the present invention, as shown in FIG. 6, the flat surface portion 11 a of the base material 11 is recessed in a substantially trapezoidal shape, and the LED 12 is provided at the center of the recess. Has been placed.

  Moreover, the said base material 11 consists of metal, such as aluminum, for example, The printed wiring board 12a for arrange | positioning the said LED12 is provided in the plane part 11a of the said base material 11, for example. Further, the curved surface portion 11b corresponding to the substantially semicircular arc of the base material 11 is appropriately formed with a cavity, and functions as a light non-transmissive cover that cannot transmit light.

  The exterior 13 is configured to be transparent and formed in a semi-cylindrical shape, and can be obtained, for example, by dividing a glass tube of a conventional fluorescent lamp in half in the axial direction. The exterior 13 is fixed to the flat portion 11 a of the base material 11.

  The pair of holders 14a and 14b are made of a synthetic resin such as plastic, and are attached to both ends of the base 11 and the exterior 13, respectively. The pair of holders 14a and 14b are respectively provided with energizing pins 15 that are electrically connected to conductive wires (not shown) of the base material 11 that are electrically connected to the respective LEDs 12. . The energizing pins 15 are electrically connected (inserted) into holes at both ends of an illumination tube mounting portion (not shown) installed in advance on a normal building ceiling, for example. Then, power is supplied to the LED 13 and the LED 12 emits light. Of course, the power supply is controlled to be turned ON / OFF by a switch connected in advance to the illumination tube mounting portion.

  Here, in the fluorescent lamp type LED lighting tube 1 according to the present invention, the light is diffused by being diffusely reflected and diffused on the inner peripheral wall of the exterior 13 facing the light emitted from the LED 12 and transmitted at a predetermined transmittance. A transmission diffusion film 16 is provided.

  Thereby, a part of the light emitted from the LED 12 is transmitted through the light transmission diffusion film 16 and travels in the vertical direction with respect to the planar portion 11a due to its straightness. On the other hand, the remainder of the light is diffusely reflected on the inner peripheral wall of the exterior 13 via the light transmission diffusion film 16 and travels in all directions.

  Here, the light traveling in all directions irradiates the light transmission diffusion film 16 again, and a part of the irradiated light travels as it is due to its straightness, and the remainder of the light further The irregular reflection is repeated on the inner peripheral wall (inside) of the exterior 13. Of course, the remaining portion of the light is also reflected on the surface of the flat portion 11a of the base 11 fixed to the exterior 13.

  By going through such a process, the irradiation angle of the LED 12 that goes in a specific direction with respect to the axial direction of the exterior 13 is changed to an angle in any direction and is made radial with respect to the axial direction of the exterior 13 is there. As a result, in the fluorescent lamp type LED lighting tube according to the present invention, it is possible to obtain an irradiation angle similar to that of a conventional fluorescent lamp.

  Here, the transmittance of the light transmission diffusion film 16 may be any value as long as the irradiation angle of the LED 12 is radial with respect to the axial direction of the exterior 13. If it is in the range of 1-0.8, it is preferable, and if it is in the range of 0.2-0.6, it is more preferable. A value obtained by subtracting the transmittance from 1 corresponds to the diffusivity (reflectance).

  The light transmission diffusion film 16 may have any configuration, for example, a configuration in which a diffusible protrusion is provided on one or both surfaces of a synthetic resin film having excellent transparency, or the film. A configuration in which particles having diffusibility are interspersed inside is mentioned.

  As described above, the fluorescent lamp type LED lighting tube 1 according to the present invention diffuses the light diffusely on the inner peripheral wall of the exterior 13 facing the light emitted from the LED 12 and transmits the light with a predetermined transmittance. A light transmission diffusion film 16 is provided.

  Thereby, it becomes possible to make the irradiation angle of the LED 12 radiate with respect to the axial direction of the exterior 13 and obtain the same irradiation angle as that of a conventional fluorescent lamp.

  As described above, the fluorescent lamp type LED lighting tube according to the present invention is useful for lighting tubes installed inside and outside various buildings, and can obtain the same irradiation angle as that of a conventional fluorescent lamp. It is effective as an LED lighting tube.

DESCRIPTION OF SYMBOLS 1 Fluorescent lamp type LED lighting tube 11 Base material 12 LED
13 Exterior 14a, 14b, Holder 15 Pin 16 Light transmission diffusion film

Claims (1)

A plurality of LEDs that emit light in the vertical direction from the plane portion are arranged in a plane direction corresponding to the substantially semicircular string of the semi-cylindrical substrate having a substantially semicircular cross-sectional shape in the axial direction of the substrate. A semi-cylindrical transparent exterior is fixed to the flat portion of the base material, and a pair of holders attached to both ends of the base material and the exterior are electrically connected to each LED. Fluorescent lamp type LED illuminating tubes each provided with a pin for energization to be connected,
The inner peripheral wall of the exterior facing the light emitted by the LED is provided with a light transmission diffusion film that diffuses and diffuses the light, and transmits the light at a predetermined transmittance, so that the irradiation angle of the LED can be changed. A fluorescent lamp type LED lighting tube characterized by being made radial with respect to the axial direction.