JP4398818B2 - Discharge lamp illumination device - Google Patents

Description

The present invention relates to an integrated discharge lamp illuminating device in which a discharge lamp is held in a cylindrical case having a built-in inverter circuit for lighting a discharge lamp.

FIG. 1 of registered utility model No. 3012136 shows the use of a frame and a bush for holding a socket connected to a terminal of a discharge lamp. In the description of the article and the design drawing according to the design of Design Registration No. 11025046 Shows a discharge lamp illuminating device including an inverter and wiring inside a hollow body square.

By the way, this kind of discharge lamp illuminating device uses a frame with a socket attached to hold the discharge lamp 13 or a hollow square case to constitute the discharge lamp illuminating device to form a wall surface, an electric signboard, a showcase, etc. It is attached to and used.

Registered Utility Model No. 3012136 Design registration No. 1150246

However, the discharge lamp illumination device using the above-described frame is difficult to secure the strength of the frame 18 as shown in FIG. 9, so that the installation work is difficult, and the strength is increased in order to secure the strength. In addition, a discharge lamp lighting device using a hollow case with a hollow body requires a special mounting hole with a special shape and dimensions for mounting the case body, so it is not versatile. There was a problem that the degree of freedom could not be obtained.

By the way, as shown in FIG. 10, most of the discharge lamp lighting devices for electric signboards are mainly composed of the discharge lamp lighting inverter section 17 and the holder 14 of the discharge lamp 13 which are separately formed. Each component configured separately in the interior of the electric signboard can be arranged relatively freely in the electric signboard by attaching the inverter unit 17 for lighting the discharge lamp individually or on the frame 18. On the other hand, since each was attached separately, it was troublesome.

Furthermore, the inverter part for lighting the discharge lamp and the step-up chopper circuit for improving the power factor generate heat when the switching element and the transformer generate heat. Therefore, it is necessary to take heat dissipation measures such as providing a radiator, resulting in high costs.

An object of the present invention is to provide a discharge lamp illumination device that solves the problems existing in such background art.

In the discharge lamp lighting device in which the discharge lamp lighting inverter circuit board 10 is built in the cylindrical case 6, fins and / or concave-shaped grooves 1 are formed on the surface of the cylindrical case 6 in the longitudinal direction of the cylindrical case 6. The holder 14 and the mounting bracket 4 for holding the discharge lamp 13 can be held at any position in the longitudinal direction of the cylindrical case 6 using the groove of the concave shape 1.

The periphery of the discharge lamp lighting inverter circuit board 10 is covered with an insulating sheet 11 having excellent thermal conductivity to ensure insulation from the inner wall of the cylindrical case 6.

The discharge lamp lighting inverter circuit board built in the cylindrical case has a width of 60 mm or less, and the elongated board shape disperses the heat generating components almost in a row on the discharge lamp lighting inverter circuit board. Dissipate heat through the case.

The concave shape 1 is formed by extending ribs r1 and r2 from both sides of the opening of the groove of the concave part, and providing a nut 2 or bolt 3 inside the concave part, and by means of the bolt 3 or nut 2 corresponding to the nut 2 or bolt 3, The discharge lamp holder 14 and / or the mounting bracket 4 are fixed to the cylindrical case 6.

Since the cylindrical case 6 is not provided with a screw hole leading to the inside of the cylindrical case 6 in order to fix the holder 14 and the mounting bracket 4, the sealing member 15 and the end face through which the electric wires are inserted at both ends of the cylindrical case 6, respectively. It can be easily sealed by the cover metal fitting 16.

The cylindrical case is made of metal, specifically, an aluminum drawn material.

According to such a discharge lamp illumination device according to the present invention, the following remarkable effects can be obtained.

(1) By providing fins and / or concave grooves on the surface of the cylindrical case in the longitudinal direction of the cylindrical case, holders and mounting brackets for holding the discharge lamp can be used for the cylindrical case by using the concave grooves. It can be held at any position in the longitudinal direction, and if a concave groove is provided on each surface of the cylindrical case, the holder and mounting bracket can be similarly held on each surface. Contributes to installation flexibility and ease of installation.

(2) Fins and concave grooves are provided on the surface of the cylindrical case in the longitudinal direction of the cylindrical case to secure a sufficient heat dissipation area. Distributing and disposing a discharge lamp lighting inverter board can realize a discharge lamp lighting device in which heat generation does not partially concentrate, contributing to ensuring high reliability and extending the life.

(3) Both ends of the cylindrical case can be easily sealed with the sealing member and the end face covering metal fitting through which the electric wires are inserted, respectively, and contribute to ensuring moisture resistance.

(4) The metal cylindrical case contributes to the realization of a cylindrical case excellent in heat dissipation, moisture resistance, mechanical strength, and ultraviolet resistance.

  Next, the best embodiment according to the present invention will be given and described in detail with reference to the drawings.

First, in order to facilitate understanding of the present invention, an overall outline of a discharge lamp illumination device will be described with reference to FIGS.

FIG. 6 shows the entirety including the cylindrical case 6, the discharge lamp 13, the mounting bracket 4, and the holder 14 of the discharge lamp 13. In the present invention, the above-described components are integrated with a cylindrical case as a base. For this reason, the attachment of the discharge lamp illumination device is completed simply by attaching the cylindrical case 6 to the wall surface or the interior of the electric signboard.

The fixing of the mounting bracket 4 and the holder 14 to the cylindrical case 6 will be described with reference to FIG. A nut 2 sandwiched between the ribs r1, r2 extending from both sides of the groove 1 of the concave shape 1 of the cylindrical case 6 and having a shape larger than the opening width of the groove is provided inside the concave shape 1, The discharge lamp holder 14 and the mounting bracket 4 a are attached to the cylindrical case 6 with the bolt 3 and the nut 2. Naturally, the bolt 3 and the nut 2 can be interchanged, the head of the bolt 3 can be put inside the concave shape 1, and the nut 2 can be fixed via the mounting bracket 4 a and the holder 14. In this case, since the bolt 3 and the nut 2 can be slid along the groove of the concave shape 1 to any position in the longitudinal direction of the cylindrical case 6, the mounting bracket 4 a and the holder 14 can be mounted at an arbitrary position. The convenience of mounting the discharge lamp 13 and mounting the cylindrical case 6 on an electric signboard, a wall surface, etc., has been dramatically improved.

A mode of the discharge lamp 13 according to the present embodiment will be described with reference to FIGS. 4, 5, and 8.

First, FIG. 4 shows a state in which three discharge lamps 13 are attached to the cylindrical case 6, and holders 14 are attached to the both sides of the cylindrical case 6 via attachment brackets 4 b, respectively. An electric lamp 13 is attached. The remaining one of the discharge lamps 13 is shown in a state where it is directly attached to the cylindrical main body with the holder 14 without the attachment bracket 4b. In both cases where the holder 14 is directly attached and via the attachment metal fitting 4b, the concave shape 1 groove of the cylindrical case 6 is used to fix the holder 14 with a common configuration of the bolt 3 and the nut 2. Standardization can be achieved.

  Next, FIG. 5 shows a state in which the holder 14 of the discharge lamp 13 is directly fixed to the cylindrical case 6 and three discharge lamps 13 are attached. 4 and 5 both show the state in which three discharge lamps 13 are attached. However, the number of discharge lamps 13 to be attached can be selected as needed according to need. It is a matter.

A preferred embodiment in which a plurality of discharge lamp illumination devices are arranged and illuminated will be described with reference to FIG.

When uniform illuminance is required for a large electric signboard or indoor lighting, the end portion of the discharge lamp 13 and the portion of the socket connected to the end portion do not emit light, and the surface corresponding to that portion is different from the other surface. It becomes darker than that. In order to improve this illumination unevenness, the discharge lamps 13 are arranged with the two lamps arranged side by side and the portions where the respective discharge lamps 13 do not emit light (the end portions of the discharge lamps 13 and the socket portions) are relatively shifted to provide uniform illumination. It is possible to get. In this case, as shown in FIG. 8, the non-light emitting portions of the opposing discharge lamps 13 including the adjacent discharge lamp illuminating devices are arranged at a certain distance. Similarly, the holders 14 for holding the discharge lamps 13 are also required to be fixed to the cylindrical case 6 while being shifted from each other by a certain distance, and this is easily realized by the fixing means using the concave 1 groove of the present invention. it can.

Next, an embodiment suitable for heat dissipation of the discharge lamp lighting inverter circuit board 10 will be described with reference to FIGS.

A discharge lamp lighting inverter board 10 shown in FIG. 7 mainly includes a boost chopper circuit for power factor improvement, an inverter circuit for lighting a discharge lamp, and a control circuit for controlling them, among which switching elements ( FET) 9, rectifier 7, and coil components (transformer, choke) 8 generate heat by operation. In the present invention, a heat-generating component is installed in the longitudinal direction of the elongated rectangular substrate after securing a width that allows at least one coil component 8 that is a large component mounted on the discharge lamp lighting inverter circuit substrate 10 to be mounted. The rectifier 7, the coil component 8, and the switching elements 9 are distributed. Thereby, since local concentration of heat generation can be avoided, the lifetime of the entire apparatus can be extended without deteriorating the reliability of the electronic components mounted on the discharge lamp lighting inverter circuit board 10.

In this case, the necessary width of the discharge lamp lighting inverter circuit board 10 needs to be large enough to mount the coil component 8, and the coil component 8 has a size of 40 watt three-lamp type discharge lamp illumination device. Since the coil component 8 of the step-up chopper needs to supply about 130 watts, the length of one side of the coil component 8 that satisfies this requirement is approximately 40 mm. Therefore, the width of the discharge lamp lighting inverter circuit board 10 can be designed to be about 60 mm in consideration of the fitting portion of the board holding rib 12 shown in FIG.

Further, the cylindrical case 6 is required to have a minimum width capable of incorporating the discharge lamp lighting inverter circuit board 10, but the cylindrical case 6 itself is preferably as slim as possible so as not to interfere with illumination. . For this reason, it is desirable to make the width of the inverter circuit board 10 for discharge lamp lighting as narrow and narrow as possible.

FIG. 1 shows a case where the insulating sheet 11 is wound around the discharge lamp lighting inverter circuit board 10 for insulation. In this case, since the insulating sheet 11 needs to be a sheet having excellent thermal conductivity, polycarbonate, PET (Poly Ethylene Terephthalate), and polyethylene can be suitably used. Further, by fixing the discharge lamp lighting inverter circuit board 10 and the wound insulating sheet 11 with a silicon rubber-based adhesive or a resin-based adhesive, the insulating state can be reliably maintained in the cylindrical case 6. it can.

Next, according to the present invention, the holder 14 and the mounting bracket 4 are attached by the groove 1 having the concave shape 1 provided in the cylindrical case 6, so that the holder 14 and the mounting bracket 4 are fixed inside the cylindrical case 6. There is no need to make a threaded hole. For this reason, when a moisture-proof and drip-proof structure is required, it is sufficient to seal only both ends of the cylindrical case 6.

The sealing member 15 shown in FIG. 6 and the end surface covering metal fitting 16 that presses and holds the sealing member 15 against the end surface of the cylindrical case 6 can be surely sealed. The electric wire connecting the discharge lamp lighting inverter circuit board 10 and the discharge lamp 13 incorporated in the cylindrical case 6 is held without gaps when the seal member 15 is inserted.

And the cylindrical case 6 can also use a resin of polycarbonate, PET (Poly Ethyl Terephthalate), polyethylene, preferably by using an aluminum drawing material, heat dissipation, moisture resistance, mechanical strength, It can be made lightweight and inexpensive with excellent ultraviolet resistance. Of course, iron or copper metal can be used instead of aluminum.

Although the best embodiment has been described in detail above, the present invention is not limited to such an embodiment, and the detailed configuration, shape, quantity, numerical value, and the like do not depart from the spirit of the present invention. You can change, add, or delete as you like.

For example, in FIG. 1, the cross-sectional shape of the cylindrical case 6 has been described as a square shape, but a circular shape, a polygonal shape, or the like may be used. Moreover, when attaching the cylindrical case 6 to a wall surface or an electrical decoration signboard, an end covering metal fitting may be used, or the attachment metal fitting 4 may be attached and fixed at an arbitrary position of the concave groove.

It is sectional drawing which shows the 1st Example of this invention. It is an enlarged view of the mounting bracket mounting part of this invention. It is sectional drawing which shows the 2nd Example of this invention. 1 shows a first embodiment equipped with a discharge lamp of the present invention. 2nd Embodiment which attached the discharge lamp of this invention is shown. It is a figure which shows one Example of the whole external appearance of this invention. One Example of the inverter circuit board used for this invention is shown. An embodiment in which a plurality of the present inventions are connected is shown. A conventional example is shown. A conventional example is shown.

Explanation of symbols

1 Concave shape 2 Nut 3 Bolt 4, 4a, 4b Mounting bracket
DESCRIPTION OF SYMBOLS 5 Fin 6 Cylindrical case 7 Rectifier 8 Coil component 9 Switching element 10 Inverter circuit board 11 Insulation sheet 12 Board holding rib 13 Discharge lamp 14 Holder 15 Seal member 16 End surface covering metal fitting 17 Separate inverter part 18 Frame r1, r2 Rib part

Claims (6)

In a discharge lamp lighting device in which an inverter circuit board for discharge lamp lighting is built in a cylindrical case, the cylindrical case has fins and / or concave grooves on its surface in the longitudinal direction of the cylindrical case and holds the discharge lamp A discharge lamp illumination device comprising a plurality of holders for holding a discharge lamp by the holders. The discharge lamp lighting device according to claim 1, wherein the discharge lamp lighting inverter circuit board is covered with an insulating sheet and insulated from the cylindrical case. The discharge lamp lighting device according to claim 1, wherein the discharge lamp lighting inverter circuit board built in the cylindrical case has a width of 60 mm or less. The concave shape includes a rib portion extending from both sides of the opening of the groove of the concave portion, a nut and / or a bolt provided inside the concave portion, and a bolt and / or a nut corresponding to the nut and / or the bolt, thereby providing a discharge lamp bracket. 4. The discharge lamp illumination device according to claim 1, wherein a mounting bracket is fixed to the cylindrical case. The discharge lamp illumination device according to claim 1, wherein both ends of the cylindrical case are sealed by a sealing member and an end surface covering metal fitting through which electric wires are inserted, respectively. 6. The discharge lamp lighting device according to claim 1, wherein the cylindrical case is made of metal.

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