JP2013033594A - Straight-tube fluorescent lamp type led lamp for double-sided signboard - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a straight-tube fluorescent lamp type LED lamp suited as a light source for a double-sided signboard where two advertising boards are disposed opposite to each other.SOLUTION: The straight-tube fluorescent lamp type LED lamp for a double-sided signboard is provided with: a narrow-frame support leg part 10 of which a support body 3 extended in a length direction inside a cylindrical cover 2 transmitting light is fitted at an inside bottom part of the cylindrical cover 2 and is extended in a length direction; and a support plate 11 set in continuation to the support leg part 10 and extended upward. A number of LEDs 4 are arrayed on each of side faces of the support plate 11 in a length direction. Further, a reflecting plate 17 is prepared facing a top end of the support plate 11 at an inside top part of the cylindrical cover 2, and a hollow part 15 is formed between both side parts as well as a top end part of the support body 3 and an inside wall face of the cylindrical cover 2.

Description

  The present invention relates to a straight tube fluorescent lamp type LED lamp using an LED (light emitting diode) as a light source, and in particular, a light source and an irradiation surface (advertisement face plate) are close to each other, and two advertisement face plates are opposed to each other. The present invention relates to a straight tube fluorescent lamp type LED lamp for a double-sided signboard suitable for a display lamp for a double-sided signboard.

  Conventionally, various types of illuminating lamps and indicator lamps using LEDs as a light source with extremely low power consumption and a long lifetime have been known. Various types of straight tube fluorescent LED lamps that can be used in place of existing straight tube fluorescent lamps have also been proposed (see Patent Documents 1 to 4).

  The straight tube fluorescent lamp type LED lamps disclosed in Patent Documents 1 to 4 and the like are all for general illumination, and a support body extending in the longitudinal direction is provided in a cylindrical cover that transmits light. A number of LEDs are attached to the body arranged in the longitudinal direction. A large number of LEDs are arranged in a line in order to compensate for the shortage of light quantity of the single LED. However, in the LED lamps described in Patent Documents 1 and 2, the support has a mountain-shaped cross section. Thus, by arranging a large number of LEDs in two rows on two inclined support surfaces, the shortage of the amount of light is compensated, and the light area is widened so that a wide area can be illuminated.

  Such a conventional straight-tube fluorescent lamp type LED lamp can be put to practical use as a general illumination for irradiating downward from 2 m to 3 m from the ceiling. For example, it is installed in a rectangular signboard body frame. When used as a display lamp for a signboard that irradiates the advertising board on the surface (usually milky white made of acrylic resin), there are the following disadvantages.

  Since the support body covers the lower half of the cylindrical cover, the irradiation range irradiated through the cylindrical cover is narrowed, and the distance between the light source and the advertising faceplate is close to 10 cm to 20 cm. As a signboard lamp, it is difficult to irradiate the advertising faceplate over a wide range and evenly. In general lighting where the irradiation is in one direction downward, there is not much influence in use for general lighting, but it is required to irradiate the advertising faceplate close to the light source as widely and evenly as possible. Because it is.

  In addition, the above conventional straight tube fluorescent lamp type LED lamp has a problem in terms of heat radiation generated as LED driving loss because the support is in close contact with or close to the inner wall surface of the cylindrical cover. .

  In view of the above circumstances, an object of the present invention is to provide a straight tube fluorescent lamp type LED lamp suitable as a light source for a signboard, particularly for a double-sided signboard in which two advertising faceplates are located facing each other. .

  In order to solve the above-mentioned problems, a straight tube fluorescent lamp type LED lamp for a double-sided signboard according to the present invention is provided with a support body extending in the longitudinal direction in a cylindrical cover that transmits light, and a plurality of LEDs are provided on the support body. Are straight tube fluorescent lamp type LED lamps arranged in a longitudinal direction, wherein the support is provided on the inner bottom of the cylindrical cover and has a narrow support leg extending in the longitudinal direction; A support plate that is connected to the support leg and extends upward and in the longitudinal direction, and a plurality of LEDs are arranged in the longitudinal direction on both side surfaces of the support plate, and are attached to the inner upper portion of the cylindrical cover. A reflecting plate located opposite to the upper end of the support plate is provided, and a void portion is formed between both side and upper ends of the support and the inner wall surface of the cylindrical cover; Features.

  The cylindrical cover is preferably made of a flame retardant polycarbonate, and the support is preferably made of an aluminum alloy mold material.

  The straight tube fluorescent lamp type LED lamp for a double-sided signboard according to the present invention is installed in a cylindrical cover, and the support for attaching a large number of LEDs is provided on the inner bottom of the cylindrical cover and extends in the longitudinal direction. The support legs, and the support plates that are connected to the support legs and extend in the upper and longitudinal directions, and a large number of LEDs are arranged in the longitudinal direction on both side surfaces of the support plates. The light emitted from the LED is irradiated laterally on both sides of the cylindrical cover, is diffusely reflected on the inner wall surface of the cylindrical cover, and is further provided on the inner upper portion of the cylindrical cover. The diffused reflection is amplified by the light, and the diffusely reflected light passes through both sides of the cylindrical cover through the space formed between the both sides and the upper end of the support and the inner wall surface of the cylindrical cover. Laterally Is irradiated over have range.

  Therefore, an appropriate number of straight fluorescent lamp type LED lamps for double-sided signboards of the present invention having such a configuration are installed in the signboard frame body, and the two advertising faceplates provided opposite to the signboard frame body In a use state where the LEDs arranged and mounted on both side surfaces of the support plate are arranged close to 10 cm to 20 cm, the irradiation range in the lateral direction on both sides of the LED lamp is wide. The entire advertising faceplate can be illuminated uniformly and brightly.

  In addition, since there is a wide space between the support and the cylindrical cover, the entire heat dissipation area is increased, and the heat generated by the drive loss of the LED can be effectively released. . In particular, when the support is made of an aluminum alloy mold, the heat dissipation efficiency can be greatly improved.

It is a top view which shows one Example of the straight tube | pipe fluorescent lamp type LED lamp for double-sided signboards concerning this invention. It is a side view same as the above. FIG. 3 is an enlarged cross-sectional view taken along line 3-3 in FIG. 1. FIG. 4 is an enlarged cross-sectional view taken along line 4-4 of FIG. It is a partially notched side view which shows the state which mounted | wore the mounting bracket with the straight tube | pipe fluorescent lamp type LED lamp for double-sided signs same as the above. It is explanatory drawing of the double-sided display signboard which uses the straight tube | pipe fluorescent lamp type LED lamp for double-sided signboards same as the above.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings.

  1 and 2 show an embodiment of a straight fluorescent lamp type LED lamp for a double-sided signboard according to the present invention, and the LED lamp 1 is disposed in a longitudinal direction in a cylindrical cover 2 that transmits light. The structure in which the extending support 3 is provided, a large number of LEDs 4 are attached to the support 3 in the longitudinal direction, and the caps 5 and 5 are fitted to the opening portions on both ends of the cylindrical cover 2 is a conventional direct connection. This is the same as a tube fluorescent lamp type LED lamp, and the same is true in that each terminal 5 is provided with two terminals 6 and 6.

  The cylindrical cover 2 is made of flame-retardant polycarbonate in the same manner as an existing straight tube fluorescent lamp, and, as shown in FIG. 3, the bottom portion (a side surface portion of a mounting bracket 20 to be described later facing a main body chassis 21). ), Two locking protrusions 7, 7 extending in the longitudinal direction are provided on the inner wall surface, and a dovetail-shaped engagement that holds and holds the support 3 between the both locking protrusions 7, 7. A joint groove 8 is formed.

  As shown in FIGS. 3 and 4, the support 3 includes a narrow support leg 10 that extends in the longitudinal direction along the bottom of the cylindrical cover 2, and a support leg 10 that is connected to the support leg 10 in the upper and longitudinal directions. The LED support arms 12 and 12 protrude from both sides of the base end portion of the support plate 11. Further, screw holes 13 for mounting and fixing to the base 5 are provided at both longitudinal ends of the support leg 10. The support 3 having such a shape is integrally formed of an aluminum alloy mold material, and has a structure in which the surface area is increased to enhance the heat dissipation effect. Further, the support leg 10 has locking protrusions 14 and 14 projecting on both side edges of the lower end, and both the locking protrusions 14 and 14 are engaged with the engagement grooves 8 of the cylindrical cover 2, The support 3 is assembled to the cylindrical cover 2, and in the assembled state, a void portion 15 is formed between both side portions and the upper end portion of the support 3 and the inner wall surface of the cylindrical cover 2. The space 15 may be a wide space so that light radiated from the LED 4 to be described later is diffusely reflected on the inner wall surface of the cylindrical cover 2 so that the cylindrical cover 2 can be irradiated as widely as possible. desirable. For this reason, the support leg portion 10 has a narrow structure, but in the illustrated embodiment, the lateral width A of the support leg portion 10 is 10% to 20% with respect to the diameter of the cylindrical cover 2 in consideration of strength. The dimensions are set.

  On the other hand, two substrates 16, 16 on which a large number of LEDs 4 are arranged are attached and fixed to both side surfaces of the support plate 11, and the lower ends of both substrates 16, 16 are supported by the LED support arms 12, 12. Further, a reflection plate 17 is attached to the inner upper portion of the cylindrical cover 2 via a locking piece 18, and the reflection plate 17 is disposed to face the upper end portion of the support plate 11. The locking piece 18 is formed integrally with the cylindrical cover 2, or a separate locking piece 18 is fixed to the inner wall surface of the cylindrical cover 2.

  When the support body 3 to which the plurality of LEDs 4 are mounted as described above is assembled to the cylindrical cover 2 by engaging the support legs 10 with the engaging grooves 8 of the cylindrical cover 2, both ends of the cylindrical cover 2 are assembled. The base 5 is fitted into the opening, and the support 3 and the base 5 are connected and fixed via the spacer 19a with the retaining screw 19 as shown in FIG. Then, the terminals 6 and 6 of the base 5 are electrically connected to the respective LEDs 4 via both substrates 16 and 16, and the straight fluorescent lamp type LED lamp 1 for double-sided signboard of the present invention is completed.

  The straight tube fluorescent lamp type LED lamp 1 for a double-sided signboard according to the present invention having the above-described configuration, as shown in FIG. 5, has sockets 22 and 22 attached to both ends of the body chassis 21 of the mounting bracket 20 (one in FIG. 5). The sockets 22 are shown) and the terminals 6 and 6 of the metal caps 5 and 5 are fitted to each other, and the support leg 10 is attached to the mounting bracket 20 in a posture facing the main body chassis 21 (see FIG. 6). ), And electrically connected to a power supply unit (stabilizer) 23 attached to the main body chassis 21. Further, a connection terminal block 24 for electrically connecting the plurality of LED lamps 1 is attached to the main body chassis 21.

  The LED lamp 1 attached to the mounting bracket 20 is used by being installed in a signboard frame 30 as shown in FIG. The signboard frame 30 is formed by attaching two advertising face plates 32 and 32 opposite to a rectangular main body frame 31. The main body frame 31 is made of a metal plate, a plastic material, wood, or the like, and the main body chassis 21 of the mounting bracket 20 in which the LED lamp 1 is assembled to a bracket 33 fixed to the main body frame 31 is attached. It is installed at an intermediate position between the advertisement face plates 32 and 32. Thus, although the LED lamp 1 installed in the double-sided signboard frame 30 is located close to a distance of 10 cm to 20 cm with respect to the two advertising face plates 32 and 32 facing each other, the advertising face plate 32 is usually used. Is made of acrylic resin and has a floating white color, the lighted particles of the LED lamp 1 are hardly visible from the outside of the double-sided signboard frame 30. In addition, the LED lamps 1 installed in the double-sided signboard frame 30 are attached at appropriate intervals (two in the illustrated embodiment) at a predetermined interval according to the size of the advertising faceplates 32 and 32, and the both advertising faceplates 32. , 32 is desirably uniformly and evenly irradiated.

  As described above, the LED lamp 1 installed in the double-sided signboard frame 30 is irradiated with the light emitted from each LED lamp 4 in the lateral direction on both sides of the cylindrical cover 2 as described above. 2 is diffusely reflected on the inner wall surface of the cylindrical cover 2, and the diffused reflection is amplified by the reflecting plate 17 provided on the inner upper portion of the cylindrical cover 2, and the diffused light is diffused to both sides and the upper end of the support 3 and the cylindrical cover. It irradiates over the wide range to the both sides lateral direction of the cylindrical cover 2 through the cavity 15 formed between two inner wall surfaces. Therefore, the irradiation range of each LED lamp 1 is widened, and the two advertising face plates 32 and 32 facing each other can be irradiated uniformly and brightly.

  In addition, since the wide space portion 15 exists between the support 3 and the cylindrical cover 2, the heat radiation area of the entire LED lamp 1 is increased, and the heat generated by the LED can be effectively released. Also excellent in terms of sex.

  The straight tube fluorescent lamp type LED lamp for a double-sided signboard according to the present invention is particularly suitable as a display lamp for a double-sided signboard in which two advertising faceplates are provided facing each other.

DESCRIPTION OF SYMBOLS 1 Straight tube fluorescent lamp type LED lamp for double-sided signs 2 Cylindrical cover 3 Support body 4 LED (light emitting diode)
DESCRIPTION OF SYMBOLS 5 Base 6 Terminal 7,7 Locking protrusion 8 Locking groove 10 Supporting leg part 11 Support plate 12 LED support arm 13 Screw hole 14 Locking protrusion 15 Space part 16 Board | substrate 17 Reflecting plate 18 Locking piece 19 Stop screw 19a spacer 20 mounting bracket 21 body chassis 22 socket 23 power supply (ballast)
24 Connection Terminal Block 30 Double-sided Signboard Frame 31 Body Frame 32 Advertising Face Plate 33 Bracket

JP 2007-280739 A Utility Model Registration No. 3139714 Japanese Patent No. 4328379 JP 2010-16567 A

Claims (4)

A straight fluorescent tube type LED lamp in which a support extending in the longitudinal direction is provided in a cylindrical cover that transmits light, and a plurality of LEDs are arranged and attached to the support in the longitudinal direction,
The support body has a narrow support leg provided on the inner bottom of the cylindrical cover and extending in the longitudinal direction; and a support plate connected to the support leg and extending upward; both sides of the support plate A large number of LEDs are arranged on the surface in the longitudinal direction,
A reflecting plate located opposite to the upper end of the support plate is provided on the inner upper portion of the cylindrical cover,
A straight tube fluorescent lamp type LED lamp for a double-sided signboard, wherein a void portion is formed between both side portions and an upper end portion of the support and an inner wall surface of the cylindrical cover.   The straight tube fluorescent lamp type LED lamp for a double-sided signboard according to claim 1, wherein the cylindrical cover is made of a flame-retardant polycarbonate and the support is made of an aluminum alloy mold material.   The straight tube fluorescent lamp type LED lamp for a double-sided signboard according to claim 1 or 2, wherein LED support arms project from both sides of the base end portion of the support plate.   The straight tube fluorescent lamp type LED lamp for double-sided signboards according to any one of claims 1 to 3, wherein a width of the support leg portion is 10% to 20% with respect to a diameter of the cylindrical cover.

Images