JP5434871B2 - LED fluorescent lamp fixtures - Google Patents

Description

  The present invention relates to an LED fluorescent lamp (or a fluorescent lamp-type LED) that can be attached to a fluorescent lamp fixture having an existing preheating circuit and can effectively prevent an electric shock at the time of replacement.

  Currently, there is a growing movement to replace and replace existing light sources such as incandescent bulbs and fluorescent lamps with LEDs (light emitting diodes). This is because by using the LED as the light source, it is possible to provide a lighting device having a longer life and energy saving than the existing light source.

Fluorescent lamp lighting methods are roughly classified into three methods, a glow starter method, a rapid start method, and an inverter method, and any one of these lighting circuits is incorporated in the fixture.
In order to replace such a fluorescent lamp fixture with an LED, (1) a method of replacing or remodeling the fixture itself or a lighting circuit incorporated in the fixture with a lighting circuit for LED, (2) LED fluorescence imitating a fluorescent lamp A method of arranging a lighting circuit inside a lamp and replacing only a light source with an LED fluorescent lamp has been proposed. Since the former method involves construction and modification of equipment, it is technically and financially difficult for a general consumer to replace it. On the other hand, the latter method has an advantage that it is easier to introduce than the method (1) because the LED fluorescent lamp whose shape, electrode terminal and the like are adapted to the fluorescent lamp fixture is simply replaced with the conventional fluorescent lamp ( For example, see prior art 1-3).

Patent 3929885 JP 2008-277188 A JP2009-266696A

  However, in the method (2), since the lighting circuit is arranged in the LED fluorescent lamp, for example, if the fluorescent lamp is replaced while the appliance is energized, there is a risk of electric shock compared to the conventional fluorescent lamp replacement. high. This is because the conventional fluorescent lamp is turned on by discharge between the filaments connected to the base, whereas the LED fluorescent lamp is turned on by energizing the LED connected to the base. In other words, the LED fluorescent lamp has a low internal resistance even when it is not lit, when the lamp is not lit before discharge, and the internal resistance is low. This is because it is applied. For this reason, there is a risk of electric shock if the base on the other end is touched during replacement.

  On the other hand, among the three lighting methods described above, the number of fixtures of the glow starter method, which is the simplest and cheapest, is the mainstream lighting method overseas although it is decreasing in Japan. For this reason, with the rapid development of LEDs, there is an urgent need to develop specifications for LED fluorescent lamps suitable for the glow starter method that can be easily implemented at home and abroad by anyone, regardless of the consumer, without requiring remodeling of equipment. It is.

  As described above, an object of the present invention is to provide a specification that allows anyone to easily replace an existing fluorescent lamp of the glow starter type with an LED fluorescent lamp without fear of electric shock.

  The present invention relates to a glow starter type fluorescent lamp apparatus, in which an existing straight tube type fluorescent lamp is replaced with an LED fluorescent lamp having a power supply side base on one end side and a short side base internally short-circuited on the other end side, The most important feature is that the existing glow tube is replaced with an LED lighting tube.

  According to the LED fluorescent lamp apparatus of the present invention, since only the existing fluorescent lamp and the glow tube (lighting tube) are replaced, anyone can easily perform the replacement operation. In addition, power is supplied to the LED fluorescent lamp only from one end side, and the other end side is internally short-circuited, so that the terminals at both ends are insulated in a circuit. For example, when the terminal on one end side is attached to the instrument, There is no risk of voltage being applied, and the risk of electric shock during replacement work is drastically reduced.

FIG. 1 is a schematic external view of the LED fluorescent lamp apparatus of the present invention. FIG. 2 is a schematic circuit diagram of the LED fluorescent lamp apparatus of the present invention. FIG. 3 is a schematic circuit diagram of a conventional glow starter type fluorescent lamp fixture. FIG. 4 is a schematic cross-sectional view in the longitudinal direction of the LED fluorescent lamp of the present invention.

  The LED fluorescent lamp fixture 10 of the present invention includes an LED fluorescent lamp 2, an LED lighting tube 3, and an appliance 1 for mounting them. FIG. 1 shows a schematic diagram of its appearance, and FIG. 2 shows a schematic diagram of its circuit configuration. In this embodiment, the LED fluorescent lamp device 10 is a straight tube type device. FIG. 3 shows a schematic diagram of a circuit with a conventional fluorescent lamp 20 and a glow tube 30 attached before the replacement of the LED fluorescent lamp 2 and the LED lighting tube 3 of the present invention. Furthermore, in FIG. 4, the schematic diagram of the longitudinal direction cross section of the LED fluorescent lamp 2 of this invention is shown.

  As shown in FIG. 3, the glow starter type lighting circuit mainly includes a fluorescent lamp 20, a glow tube 30, and a ballast 40. When the power is turned on by the switch 60, electric discharge is generated inside the glow tube 30, and this heat causes the bimetal inside the glow tube 30 to operate and current flows. At this time, the filaments at both ends of the fluorescent lamp 20 are preheated. During this time, with the cooling of the bimetal, the circuit inside the glow tube 30 opens and no current flows. Then, a kick voltage of the ballast is generated, a high voltage is generated, and the fluorescent tube 20 emits light by discharging between both filaments.

  The LED fluorescent lamp apparatus 10 of the present invention is configured only by replacing the fluorescent lamp 20 with the LED fluorescent lamp 2 and the glow tube 30 with the LED lighting tube 3. The cap 21 of the LED fluorescent lamp 2 (21a, 21b) and the cap of the LED lighting tube 3 have the same cap shape that is compatible with the fluorescent lamp 20 and the glow tube 30 so that they can be easily replaced with existing parts. Yes. For this reason, the existing instrument 1 can be used as it is for other parts, for example, the instrument 1. In general, the fluorescent lamp 20 and the glow tube 30 are arranged so as to be exposed on the outside of the instrument 1 so that they can be easily exchanged. With the above-described configuration, anyone can easily perform the exchange work.

First, the details of the LED fluorescent lamp 20 will be described.
The LED fluorescent lamp 20 has a shape similar to and compatible with a straight tube fluorescent lamp that is long in one direction, and has a heat-dissipating property on which a cover 23 made of a transparent resin and a mounting board of an LED 26 described later are mounted. The outer shape is constituted by the good casing 24 and the caps 21 (21a, 21b) arranged at both ends thereof.

Moreover, it has the lighting circuit 25, LED26, and the short circuit part 27 in it. The lighting circuit 25 includes a rectification unit 25a formed of a diode bridge circuit, and a current adjustment unit 25b that smoothes the rectified current and supplies a constant current to the LED 26. Note that the short-circuit portion 27 is electrically insulated from the lighting circuit 25 and the LED 26.

The cover 23 is formed so as to have an arcuate cross section, and is slid and fixed in a guide groove provided along the longitudinal direction of the casing 24. Further, the cover 23 is made of a transparent polycarbonate resin, and a light diffusion process is performed on the inner surface of the cover 23 in order to diffuse the light of the LED 26 and reduce the glare feeling felt by the user.
The cover 23 may be made of a material with little light deterioration, and an acrylic resin, a silicone resin, glass or the like may be used in addition to the polycarbonate resin. However, since a fluorescent lamp is generally supported only by a base terminal, a lightweight member is preferable, and it is preferable to use a resin. Furthermore, since it is necessary to shape | mold in elongate shape, either the polycarbonate resin which is a thermoplastic resin among these, or an acrylic resin is preferable.
In this embodiment, the light diffusion treatment is performed on the inner surface, but a known light diffusion material such as silica or titanium oxide may be mixed into the above material to diffuse the light.

  The housing 24 is made of aluminum having high thermal conductivity, and is thermally connected to the back surface of the mounting substrate of the LED 26, and dissipates heat generated by the LED 26 to the outside of the LED fluorescent lamp 2. Examples of members having high thermal conductivity and good heat dissipation include metals such as aluminum and copper, alloys thereof, and ceramics. However, in the present invention, since it is necessary to form in a long shape, it is preferable to form with aluminum, copper, or an alloy containing these as a main component.

As shown in FIG. 4, the lighting circuit 25 is fixed together with a pair of terminals in the power supply side base 21 a on one end side of the LED fluorescent lamp 2. Moreover, the short circuit part 27 is arrange | positioned so that a pair of terminals may be short-circuited in the short circuit side base 21b of the other end side.
Here, in the present embodiment, each circuit board on which the lighting circuit 25 and the short-circuit portion 27 and a pair of terminals are mounted is respectively placed in the both caps 21 so as to be substantially perpendicular to the mounting board on which the LEDs 26 are arranged and mounted. It is arranged. In the lighting circuit 25, the height of each element may be smaller than the mounting area occupying the substrate. With this configuration, the mounting area of the LEDs 26 can be larger, or more LEDs 26 can be mounted. For this reason, the light emission area prescribed | regulated with the cover 23 can be utilized more widely, and it becomes easy to obtain desired illumination light.
In the present embodiment, the example in which the rectifying unit 25a and the current adjusting unit 25b are disposed in the power supply side base 21a has been described. However, in order to improve the heat dissipation of the current adjusting unit 25b including a smoothing capacitor, the current adjusting unit 25b May be arranged on the mounting substrate side of the LED 26.

Next, the LED lighting tube 3 will be described.
The LED lighting tube 3 is different from the conventional glow tube 30 in that the terminals are electrically connected (conductive). In this embodiment, the terminals are electrically connected by short-circuiting with the internal wiring. Examples of other forms include current limiting resistors and overcurrent protection fuses. However, if the resistance value is too high, heat generation during energization becomes a problem, and the power consumption of the appliance itself increases. Therefore, it is not preferable. From the viewpoint of circuit protection of the existing socket and connected wiring of the appliance 1 and the LED fluorescent lamp 2, a fuse for overcurrent protection is preferable. The capacity of the overcurrent protection fuse is preferably 7 A or less.

  With the above configuration, the risk of electric shock during replacement work is drastically reduced. Hereinafter, the operation will be described based on an example of replacement work. It is assumed that the glow tube 30 has already been replaced with the LED lighting tube 3.

  When only the power supply side cap 21a is attached to the appliance 1, the short circuit portion 27 is electrically insulated from the lighting circuit 25 and the LED 26, and thus no voltage is applied to the short circuit side cap 21b. At this time, the voltage is applied to the terminal (existing socket) on the side of the instrument 1 to which the short-circuit side base 21b is connected, and merely holding the LED fluorescent lamp 2 does not cause an electric shock. Furthermore, since the terminal on the appliance 1 side is not connected, the LED fluorescent lamp 2 is not lit.

  Next, when only the short-circuit side base 21b is attached to the instrument 1, since the mutual bases are insulated as described above, no voltage is applied to the power supply side base 21a. For this reason, there is no fear of electric shock, and the LED fluorescent lamp 2 is not lit.

  As described above, according to the present configuration, the risk of electric shock during replacement work is drastically reduced. If the glow tube 30 and the LED lighting tube 3 are removed during the operation, the risk of electric shock is further reduced.

Moreover, although the case where the modification by the side of the instrument 1 is not performed is illustrated in the present embodiment, the instrument 1 may be modified to the extent that the effects of the present invention can be obtained in order to optimize the LED fluorescent lamp 2 as an attachment instrument. This will be apparent to those skilled in the art.
For example, the ballast 40 may be removed and short-circuited between them, or the ballast 40 may be short-circuited in parallel without removing the ballast 40. Even in this case, the risk of the above-mentioned electric shock can be reduced, and the power consumption by the ballast 40 can be reduced.

  The present invention includes exchangeable fluorescent lamps such as a round (annular) fluorescent lamp having a four-terminal base (terminal) in which both bases are integrated, in addition to a straight tube fluorescent lamp having a base at both ends, The present invention can be applied to all glow starter fluorescent lamp fixtures each having a replaceable glow tube.

DESCRIPTION OF SYMBOLS 1 Appliance 2 LED fluorescent lamp 21 Base 21a Power supply side base 21b Short-circuit side base 23 Cover 24 Case 25 Lighting circuit 25a Rectification part 25b Current adjustment part 26 LED
27 Short-circuit part 3 LED lighting tube 10 LED fluorescent lamp fixture 20 Fluorescent lamp 30 Glow tube 40 Ballast 50 Commercial power 60 Switch

Claims (2)

Glow starter type appliances that turn on fluorescent lights,
An LED lighting tube that is replaceable with a glow tube provided in the appliance and whose terminals are electrically connected;
An LED fluorescent lamp that is replaceable with the fluorescent lamp and incorporates an LED and a lighting circuit;
The LED fluorescent lamp comprises
On one side, it has a power supply side base comprising a pair of terminals for supplying power to the LED via the lighting circuit,
On the other side, it has a short-circuit side base comprising a pair of terminals short-circuited to each other,
LED fluorescent lamp apparatus characterized by the above. The LED fluorescent lamp apparatus according to claim 1, wherein the LED lighting tube includes an overcurrent protection fuse between its terminals.

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