WO2009064014A1

WO2009064014A1 - Led illuminating apparatus having fluorescent lamp shape

Info

Publication number: WO2009064014A1
Application number: PCT/JP2008/070972
Authority: WO
Inventors: Yasunobu Nakanishi; Shin Arakawa; Yasukiyo Nakamura
Original assignee: Lead Corporation Ltd.
Priority date: 2007-11-14
Filing date: 2008-11-12
Publication date: 2009-05-22

Abstract

An illuminating apparatus comprises a light source of LEDs having a long service life and an excellent low-temperature start characteristic and has a structure compatible with that of conventional fluorescent lamps. Power is supplied to the LEDs without converting the output of the stabilizer into DC current unlike conventional techniques. Therefore, the illuminating apparatus is free of power loss caused by rectification conversion and has a power usage effectiveness. Inside the apparatus body compatible with fluorescent lamps attached to existing fluorescent lamp illuminating apparatuses, a start assisting capacitor for impelling AC oscillation of the stabilizer installed in the fluorescent lamp illuminating apparatus and printed boards on which LEDs are arrayed. The number of LEDs is such that the LEDs connected in series are operable in each of the positive and negative polarities of the AC output of the stabilizer.

Description

Specification

L E D type fluorescent lamp lighting equipment

The present invention relates to an LED type fluorescent lamp illuminator that can be mounted and used as it is in an existing fluorescent lamp illuminator. Background art

Conventional fluorescent lamp lighting devices discharge high-pressure into a mixed gas of argon gas and mercury vapor sealed inside the glass tube from both end portions of the glass tube, so that ultraviolet rays generated from the gas gas are applied to the inner surface of the glass tube. This is based on the principle that the fluorescent material emits white light when irradiated to the applied fluorescent material. For this purpose, a preheat starting ballast with a glow starter for starting a fluorescent lamp, a gimberter type ballast, etc. are indispensable. In recent years, a structure has been realized in which such an inverter and fluorescent lamp are integrated into the lighting device itself. In addition, fluorescent lamps have a high efficiency (1 m / W) for converting electric power into light, with halogen bulbs and incandescent bulbs around 30%, and fluorescent lamps have a high performance of 50-60%. As a rod-shaped white light source, it is widely used because of its features such as the ability to produce a natural white light intensity uniformly.

However, the biggest drawbacks of fluorescent lamps are flickering due to end of life and non-lighting. Although it has a longer life than halogen bulbs and incandescent bulbs, If it reaches 700 to 10,000 hours, it will reach the end of its life and flickering will occur.

Therefore, recently, as disclosed in Japanese Patent Application Laid-Open No. 200 1-35 1402, a LED type fluorescent lamp illumination device in which white LED is mounted instead of a conventional fluorescent lamp has been invented. According to the present invention, the white LED is lit by generating direct current by means such as rectifying the alternating current output of a conventional fluorescent lamp ballast. The background to the use of LEDs in equipment in this way is the direct current power supply, which can be easily controlled at low voltage and has long-term reliability. Although the luminance deteriorates over time, it is excellent in long-term reliability, such as being difficult to turn off such as a broken ball. It has been attracting attention as a next-generation light source for fluorescent lamps that takes advantage of the properties of LED.

In addition, a prior art on a projector that has a mechanism that can be connected to an existing fluorescent lamp fixture and lights a plurality of LEDs (Japanese Utility Model Publication No. 6-54 103), an existing bulb socket and a fluorescent socket. There is a prior art (Japanese Laid-Open Patent Publication No. 200 1-5 2 504) relating to an LED lighting device that can be mounted on a device.

On the other hand, for LED fluorescent lamps that are structurally compatible with the current fluorescent lamps, there is no unified standard for LED fluorescent lamps. In order to ensure the reliability and quality of products, it is essential to take sufficient quality measures in terms of structure. Disclosure of the invention

One of the challenges of conventional fluorescent lamps is that when the life of the discharge electrodes of fluorescent lamps is reached, Symptoms such as flickering appear, eventually leading to no lighting. Defective fluorescent lamps, especially in public places, can cause accidents and so on, so there is a large maintenance cost for replacing fluorescent lamps.

The second problem is the problem of the principle of fluorescent lamps. Fluorescent lamps apply high pressure to the gas sealed inside the tube to generate ultraviolet rays and cause the fluorescent material applied to the fluorescent tube to emit white light. However, due to the presence of gas inside, if the outside air temperature becomes low, the gas becomes inactive and it becomes difficult to light up. For this reason, in cold districts, there have been issues such as special measures such as heating with a heater so that fluorescent lamps do not light up if the brightness deteriorates.

The third challenge is ensuring the reliability and quality of newly developed products. In the current situation where there is no uniform standard for LED fluorescent lamps, this is the most important issue in mass production.

Therefore, according to the present invention, in order to ensure the reliability and quality of the product in mass production, the joint member developed by the company is interposed between the JIS standard base, the cylindrical cover, and both ends of the printed circuit board. Thus, an object of the present invention is to provide an LED type fluorescent lamp illumination device that can securely fix a printed circuit board and prevent solder cracks mounted on the printed circuit board.

Further, the present invention provides an illumination device that is structurally compatible with an existing fluorescent lamp using an LED having a long lifetime and excellent low temperature startability as a light source. As in the prior art shown in Documents 1 to 3, by supplying power to the LED without converting the output of the ballast to DC, It is possible to realize a lighting device with no power loss and high power utilization rate. Furthermore, according to the present invention, the fluorescent material applied to the inner surface of the fluorescent tube is caused to emit light by the ultraviolet LED that emits short-wavelength ultraviolet light in the vicinity of the wavelength of 25 3.7 nm, thereby allowing each white LED to emit light. As a result, it is possible to suppress the uneven color at the time of the entire light emission due to the color temperature, and to solve the problem as an illumination device that can be replaced with the current fluorescent lamp. In addition, since the printed circuit board mounting / demounting structure of the present invention can replace only the printed circuit board on which the LED whose luminance has deteriorated significantly over time is mounted, the unnecessary components to be discarded can be reduced and the cost can be reduced. It provides an ecological LED-type fluorescent lamp lighting device that can be used for a long time.

The LED-type fluorescent lamp illumination device according to the present invention is a pair of LEDs that are directly mounted on an existing fluorescent lamp illumination device using LED as a light source and seal an illumination main body structurally compatible with the current fluorescent lamp. Installed with a pair of joint members between the JIS standard base and both ends of the printed circuit board on which the cylindrical cover of the illumination body and the LEDs inside thereof are arranged, and the base side mounting part of the joint member Includes a fitting portion that is fitted inside the base, and a pair of insertion holes through which the lead wires connected to the pair of terminals are inserted are formed in the fitting portion. A pair of recesses are formed at the upper end and lower end of the part, and the rotation of the base is completely suppressed by fitting with the recess of the base, and the mounting direction of the joint member on the cylinder cover side is lateral. A pair of slits with cuts The printed circuit board is fitted to both ends of the slip board to firmly fix the printed circuit board and prevent solder cracks mounted on the printed circuit board. A configuration is adopted in which an O-ring is mounted on the outer periphery of the cylindrical cover-side mounting portion of the front member, and the O-ring provides a waterproof effect and firmly fixes the cylindrical cover. As a result, sufficient measures can be taken to ensure the reliability and quality of products during mass production. In addition, if there is a dimensional tolerance in mass production work, it can be absorbed by the joint member.

Further, a T-type column base is provided on the back surface side of the printed circuit board in the illumination body, and the printed circuit board is stably held at a substantially center of the cylindrical cover by the T-type column base.

Further, in the LED-type fluorescent lamp illumination device, the fluorescent lamp is installed in an illumination main body that is directly attached to an existing fluorescent lamp illumination device equipped with a ballast for starting the fluorescent lamp and is compatible with the fluorescent lamp. A starting auxiliary capacitor for promoting AC oscillation of the ballast installed in the lamp lighting device, and the number of series that can be lit in each of the positive phase side and the negative phase side of the alternating current output from the ballast It is equipped with a printed circuit board on which LEDs are arranged, and the AC output of the ballast can be connected without DC conversion. This makes it possible to turn on the LEDs via a ballast installed in a conventional fluorescent lamp lighting device, and arrange them so that they are lit only in the positive phase of the AC output from the ballast. The circuit configuration that allows current to flow through each of the multiple LEDs wired in series and the LEDs wired in the direction that lights only in the reverse phase, while eliminating the need for a rectifier circuit or ACZDC inverter, It is possible to provide an illumination device that can be connected to a ballast for a fluorescent lamp tube.

In addition, the illumination main body has a casing and a lighting power that is detachably attached thereto. And a luminance detection means for detecting the brightness of the normal phase side LED or the reverse phase side LED, while allowing the print board to be installed in a removable manner. The feature is that only the printed circuit board on which the LED whose luminance has deteriorated due to aging is mounted can be easily replaced.

In addition, the illumination body is composed of a casing coated with a wavelength converting fluorescent material and an illumination cover, and an ultraviolet light emitting LED is mounted on the printed circuit board, and color unevenness at the time of light emission of the LED is reduced to emit light uniformly It is characterized by.

As described above, according to the present invention, a pair of JIS standard caps for sealing an illumination body that is directly mounted on an existing fluorescent lamp illumination device using LED as a light source and is structurally compatible with the current fluorescent lamp. And a cylindrical cover of the lighting body and a pair of joint members between the two ends of the printed circuit board on which the LEDs inside are arranged, ensuring product reliability and quality stability during mass production Since the product value can be contributed to, the product value can be increased, and when a dimensional tolerance occurs in the operation at the time of mass production, it can be absorbed by the joint member, so that the work efficiency can be improved.

In addition, inside the lighting body compatible with conventional fluorescent lamps, a starting auxiliary capacitor for starting oscillation of the ballast installed in the existing fluorescent lamp lighting device, and the positive output of the AC output from the ballast An existing fluorescent lamp illumination device equipped with a ballast for starting a fluorescent lamp by having a structure with printed circuit boards arranged in series that can be lit in the direction of the phase side and the opposite phase side. It can be used as it is to realize an illuminating device that has a lifetime that is several times longer than conventional fluorescent lamps. is there. Furthermore, according to the present invention, since the circuit is formed without rectifying the AC output of the ballast, there is no power loss, the number of parts of the rectifier circuit can be reduced, and an inexpensive lighting device can be realized.

In addition, even if it is necessary to replace the LED fluorescent lamp lighting device itself due to the deterioration of the brightness of the LED itself due to long-term use, only the printed circuit board can be replaced. It can be used continuously. As a result, no waste is generated and a very ecological lighting device can be realized.

Furthermore, an ultraviolet LED capable of emitting short wavelengths is mounted on the printed circuit board, a fluorescent material is applied to the housing and the lighting cover, and the fluorescent material is emitted by the ultraviolet LED, thereby mounting a white LED or the like. Color unevenness during light emission due to the color temperature difference of each LED that occurs when a direct light source is used can be reduced, and a lighting device that emits light uniformly over the entire housing can be realized. Brief Description of Drawings

FIG. 1 is a diagram showing a configuration of an embodiment of an LED type fluorescent lamp illumination device. Fig. 2 is a diagram showing the circuit configuration of an LED type fluorescent lamp illumination device. FIG. 3 is a diagram for explaining the AC output of the existing fluorescent light ballast and the direction of the current flowing in the LED mounted on the printed circuit board according to the embodiment. FIG. 4 is a diagram for explaining the connection relationship between the number of LEDs connected in series and the number of parallel connections. FIG. 5 is a diagram for explaining a method for detecting the deterioration of brightness of an LED. FIG. 6 is a perspective view showing an example of a base and a joint member. Fig. 7 is a side view of the joint member shown in Fig. 6. It is. FIG. 8 is a front view of the joint member shown in FIG. FIG. 9 is a view showing an LED type fluorescent lamp illumination device in which the joint member shown in FIG. 6 is interposed. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing the configuration of an embodiment of an LED type fluorescent lamp illumination device of the present invention. In the figure, 1 is a printed circuit board on which an LED is mounted, 2 is an LED, 3 is a fixed board for terminally connecting the printed circuit board, 4 is a base for sealing the lighting body, and 5 is a ballast for a fluorescent lamp. Terminal for receiving electric power, 6 is a housing of the main body, 7 and 8 are socket terminals A and B and 9 for fixing the printed circuit board, and the other socket is for fixing the socket terminal. Joint board for electrical connection with terminals, 10 is a board fixing column for placing the printed board, 1 1 is a lighting cover, and 1 2 is a board fixed to the terminal fixing board. Socket terminals C and 13 are board socket terminals D to be inserted into the socket terminals C provided on the printed board.

The main unit can be installed directly in the fluorescent lamp tube outlet by making it compatible with the dimensions of existing fluorescent lamp lighting devices. The terminals shown in 5 are the same size as the existing fluorescent lamp tube. In addition, according to the size of the existing fluorescent lamp tube according to the electric power, the direct size and length of the cylindrical tube are the same compatible dimensions. The details will be described below on the premise that a part of the basic structure that can replace the existing fluorescent lamp tube is included. A terminal fixing board 3 and a printed board 2 that can be installed inside the terminal 5 and the base 4, and another set of printed boards placed in a symmetrical position via the joint board 9, and the terminal fixing board, the base and the terminal Are jointed and electrically connected. The AC power supplied from the ballast of the fluorescent lamp lighting device through the terminal 5 is supplied to the LED 2 mounted on the printed circuit board 1 through the terminal fixing board 3. LED 2 on this printed circuit board 1 consists of a plurality of LEDs arranged so that current flows when the positive phase of AC power is applied, as shown in Fig. 2, and when reverse phase is applied. The circuit is formed by a plurality of LEDs arranged so that a current flows through them. When each PCB 1 is significantly inferior in brightness, it is possible to remove PCB 1 from PCB socket B and B PCB socket 12 on joint substrate 9 and replace them with new ones. is there. Therefore, the illumination cover 11 is a lid so that it can be detached from the housing 6. This structure eliminates the need to discard the fluorescent tube when it is not lit as in a conventional fluorescent lamp.

Here, as a result of diligent efforts to fully take measures to ensure product reliability and quality stability, which are the most important issues during mass production, the applicant of the present application is a new joint member that replaces the fixed substrate 3 described above. Was successfully developed. Hereinafter, an example of the joint member of the present invention will be described with reference to FIGS.

The joint member 100 is composed of a pair of JIS standard caps 200 for sealing the lighting body, a cylindrical cover 30 0 of the lighting body, and both ends of the printed circuit board 400 on which the LEDs in the interior are arranged. (See Fig. 9) See)

The base-side mounting portion 1 0 1 of the joint member 100 includes a fitting portion 1 0 2 that is fitted inside the base 2 0 0, and a pair of terminals 2 are included in the fitting portion 1 0 2. A pair of insertion holes 10 3 through which the lead wire connected to 01 is inserted is formed. In addition, a pair of recesses 10 4 are formed at the upper end and lower end of the base-side mounting portion 10 1, and the base 2 0 0 is rotated by fitting with the recess 2 0 2 of the base 2 0 0. It is completely suppressed. In addition, the cylindrical cover side mounting portion 105 of the joint member 100 is formed with a pair of slits 10 6 that are cut in the lateral direction, and the printed circuit board 400 is formed in the slit 10 06. The both ends of are fitted and fixed. As a result, the printed circuit board 400 can be firmly fixed and solder cracks mounted on the printed circuit board 400 can be prevented. Furthermore, an O-ring 10 07 is attached to the outer periphery of the cylindrical cover side mounting portion 10 5 of the joint member 100, and the inside of the cylindrical cover 3 0 0 is waterproofed by the O-ring 1 0 7. In addition to exhibiting the effect, the cylindrical cover 300 can be firmly fixed by being attached in close contact with the cylindrical cover 300.

In addition, by adopting the joint member 100 described above, the overall length needs to conform to the JIS standard, but if there is a dimensional tolerance in mass production work, the joint part 100 Because it can be absorbed by the material, work efficiency can be improved. Furthermore, by attaching an O-ring 10 07 to the outer periphery of the cylindrical cover one-side mounting portion 10 5 of the joint member 100, the tolerance of the inner diameter of the cylindrical cover 300 can be absorbed by the O ring.

As shown in Fig. 9, on the back side of the printed circuit board 400 in the lighting body, A T-shaped column base 500 is provided, and the printed circuit board 400 can be stably held at substantially the center of the cylindrical cover 300 by the vertical column base 500.

Next, the circuit configuration will be described with reference to FIG. 20 and 2 1 are input terminals for receiving power from existing fluorescent ballasts, 2 2 is a starting auxiliary capacitor for promoting AC oscillation of the ballast, 2 3 is the positive phase side of the supplied AC power The positive phase side LED arranged to light at, 24 is the negative phase side LED arranged to light on the negative phase side of the supplied AC power, and 25 is the positive phase side for reasons such as aging. 26 The brightness detection means 26 generates a signal that the brightness of the LED and reverse phase side LED has deteriorated, and 26 6 is a life detection means configured to indicate the LED. It is a luminance detection means that detects the brightness of the side LED. The quantity of LEDs arranged on the positive LED and the negative side is determined by the amount of power that can be output from the ballast. For example, in the case of a general-type FL 20 S fluorescent lamp tube according to the JIS standard written as 20 W and a ballast compatible therewith, the actual power supply to the fluorescent lamp tube is about 18 W, and the duty ratio is about 50 Assuming that% pulse AC is applied, 300 mA to 400 mA at maximum in the running average current consumption, and 160 V to 200 V in peak to peak voltage value are applied. Therefore, in the case of a white LED as in the case of a conventional fluorescent lamp, if the forward start voltage of the LED is about 3.2 V, about 25 white LEDs on each of the positive phase side and the reverse phase side are provided. Can be connected in series. At this time, the emission color of the LED may be other than the white LED, but since the LED has a different forward voltage depending on the color, the quantity that can be connected in series differs depending on the color. For example, in the case of red LEDs, the forward voltage is around 1.8 V, so about 50 units can be connected in series. On the other hand, the parallel connection Determined by the flow.

Next, in the present invention, a series circuit and a parallel circuit of LEDs are formed on the printed circuit board 1 as shown in FIG. 4 in the size of a conventional fluorescent lamp tube, and a plurality of similar printed sheets are formed. Board 1 is connected by connecting joints vertically with socket terminals. At this time, the number of LEDs in series and the number in parallel are as described above. Also. This joint structure makes it possible to replace the printed circuit board 1 when the LED brightness deteriorates, and also serves to jointly connect the printed circuit boards vertically. According to the present invention, by using these means, the conventional fluorescent lamp tube and its ballast can be used as they are to obtain an LED type lighting device, which has an unprecedented long life LED type lighting device. Can be provided.

By the way, multiple printed circuit boards 1 can be connected vertically in accordance with the output of the ballast, and the number of parallel LEDs can be increased. Also, in cases where it is not necessary to replace the printed circuit board due to LED brightness deterioration, such as installation in places where people cannot enter or exit, or installation where there is no impact even if the brightness deteriorates, It is not possible or necessary to replace the printed circuit board. Therefore, a series circuit or a parallel circuit may be formed on a single printed board. And you can connect and fix directly to terminal 5 without using joints and sockets. In this case, it is not necessary to have the board sockets for joint boards 9, 7, 8, 12 and 13 and the illumination cover 11.

Next, an embodiment of the LED life detection means 25 will be described with reference to FIG. The LED brightness detection means 26 is a light detection element for converting the brightness of the LED into an electrical signal. For example, existing phototransistors are photodiodes However, since these elements can only output light intensity as a signal with high output impedance, luminance detection means 26 and lifetime display means 27 including the semiconductor elements can be used. In some cases, it may be difficult to provide drive power for operating all of the voltage determination means 28 with these elements. Therefore, according to the present invention, a solar cell is used as the light receiving element of the luminance detecting means 26 shown in FIG. Generates an electromotive force, and the generated current is converted into a voltage by a resistor 29. Then, when the voltage judgment means 28 is below a certain voltage, the LED judges that the life has expired, and the life display means 27 is turned off. If the LED brightness is normal, turn on the life display means 27. By the way, an amorphous solar cell having high short wavelength sensitivity may be used as the solar cell. As a result, even if the color variation of the white LED is biased toward the emission color of blue, it is possible to detect fluctuations in the brightness of the LED. In addition, although the sensitivity at low illuminance is low, a single crystal solar cell or other types of solar cells may be used.

As described above, according to the present invention, since the driving power of the life detecting means 25 itself is provided by the solar cell, it is necessary to supply the power received from the fluorescent light ballast by performing DC conversion or the like. It is possible to realize life detection that is very simple and has almost no power loss.

Here, the principle of operation for detecting the luminance deterioration of LE when the luminance detecting means 26 shown in FIG. 2 is a solar cell will be described with reference to FIG. A resistor 41 connected in parallel to the solar cell 40 is connected. At this time, the generated voltage 43 is generated in the resistor 41 by the generated current 42 generated by the solar cell 40. This solar It is possible to detect the brightness of light as a voltage by converting the current to voltage at the operating point 44 of the pond. If the LED reaches the end of its life and the brightness is significantly reduced, naturally the generated current 42 generated by the solar cell also decreases, so the operating point 44, which is the intersection with the resistor 41, also decreases. When the generated voltage 4 3 at the operating point 44 becomes a voltage equal to or lower than the threshold value set by the voltage detection means shown in FIG. 2, the visual indication can be determined by operating the life display means. It is.

By the way, if the brightness of the LED due to the lifespan further decreases, naturally, the power that can be generated by the solar battery 40 also decreases, and the necessary driving power is not supplied to the entire life detection means. Since the life display means is not lit in general, it is a problem if you define it as a life.

Also, in situations where strong external light such as outdoor light during the day is radiated, under conditions of use where lighting devices are kept on, the solar cells generate electricity with the strong external light, and the LED In some cases, it may not be possible to correctly determine whether the product has reached the end of its service life. However, if there is no extraneous light at night and the illuminator starts to light up, it can be judged as usual if the ED output is detected. If the generated voltage of the solar cell is detected as a voltage below the threshold even once after the lighting device has started to turn on, the life display means is immediately turned off and continues until the LED is replaced. And keep it off. This is because even if the output of the solar cell temporarily increases due to outdoor light, etc., even if a voltage exceeding the threshold value is generated, the life display means is continuously turned off, so the LED can be determined to be at the end of its life. Because of this. By the way, this life indication means can be recognized without confusion with the illumination color of the main unit if LED other than white is used, and the LED can be driven with low power consumption. Therefore, the solar cell of the luminance detecting means 26 is also small and can cover the power of the entire life detecting means.

By the way, the resetting of the life detection means 25 shown in FIG. 2 makes it impossible to generate power for the solar cell due to extinguishing the fluorescent lamp itself, and the electromotive force is completely zero or below the threshold value. By having means 30 for resetting voltage judgment means 2 8 only when the voltage becomes lower, the life of LED can be judged again when the fluorescent lamp starts to light up again.

Further, according to the present invention, an ultraviolet LED having a light emission characteristic of short wavelength: near 25.73.7 nm is mounted on the printed circuit board 1, and a fluorescent material is applied to the illumination cover 11 and the casing 6. An effect similar to that obtained by emitting ultraviolet light by gas discharge of a conventional fluorescent lamp can be produced. As shown in Fig. 2, the same circuit as shown in Fig. 2 can be used even if ultraviolet LED is used. Therefore, the same definition holds true for the ultraviolet LED as to the number of LEDs connected in series as described in the above embodiment. According to this device, the fluorescent material can emit light without possessing the filament structure of a conventional fluorescent lamp, and it is not necessary to enclose gas inside the tube. In addition, there is a disadvantage that it is not necessary to form a glass tube as in conventional fluorescent lamps.

Claims

6

Claims A pair of JIS standard caps for sealing an illumination body that is directly mounted on an existing fluorescent lamp illumination device using LED as a light source and is structurally compatible with the current fluorescent lamp, and a cylindrical cover of the illumination body and its A pair of joint members are interposed between both ends of the printed circuit board on which the internal LEDs are arranged, and the fitting side fitting portion of the joint member has a fitting portion fitted inside the die, A pair of insertion holes through which the lead wires connected to the pair of terminals are passed in the fitting portion, and a pair of recesses are formed in the upper end portion and the lower end portion of the base side attachment portion. By fitting with the recess of the base, the rotation of the base is completely suppressed, and a pair of slits cut in the lateral direction are formed in the cylindrical cover side mounting portion of the joint member, Sritsu Both ends of the printed circuit board are fitted to firmly fix the printed circuit board, and solder cracks mounted on the printed circuit board are prevented, and an O-ring is attached to the outer periphery of the joint cover side mounting portion of the joint member. An LED-type fluorescent lamp illuminating device that is mounted and provides a waterproof effect by the O-ring and firmly fixes the cylindrical cover.

A T-type column base is provided on the back side of the printed circuit board in the illumination body according to claim 1, and the printed circuit board is stably held at a substantially center of the cylindrical cover by the T-type column base. It is characterized by doing.

The LED-type fluorescent lamp illumination device according to claim 1 or 2, wherein the existing fluorescent lamp illumination device has stability for starting the fluorescent lamp. 7

A start-up capacitor for promoting AC oscillation of a ballast installed in the fluorescent lamp lighting device, and an AC output output from the ballast inside the lighting body that is mounted as it is and compatible with the fluorescent lamp. LED type fluorescent lamp equipped with a printed circuit board with a series number of LEDs that can be lit in the direction of the positive phase side and the reverse phase side, respectively, so that the AC output of the ballast can be connected without DC conversion Lamp-type lighting device.

The lighting body according to claim 3 is composed of a housing and a lighting cover that is detachably attached thereto, and the printed circuit board can be detachably installed inside the housing. In addition, the brightness detection means to detect the brightness of the LED of the positive phase or the LED on the opposite phase side is provided, and only the printed circuit board on which the LED whose brightness has deteriorated due to aging is mounted can be easily replaced. LED-type fluorescent lamp type lighting device.

The lighting body according to claim 3 or 4 comprises a casing and a lighting cover coated with a wavelength converting fluorescent material, and an ultraviolet light emitting LED is mounted on the printed circuit board, An LED-type fluorescent lamp illumination device that features uniform color emission with reduced color unevenness.