JP3014266U - Lighting unit - Google Patents

Abstract

(57) [Summary] [Provision] To provide a dot matrix display device capable of obtaining a uniform color combination effect. [Structure] The first wiring board 13 is a disk, and has one hole 130 and a large number of green lamps and red lamps 14 mounted around the hole. The second wiring board 17 is a disk,
It has a blue light 15. The first housing 10 has a partition plate 11 that is connected to the inner circumference of the first housing 10 and separates the first housing 10 into a first cavity and a second cavity. The first wiring board 13 is mounted in the first cavity, while the second wiring board 17 is mounted in the second cavity. A boss 12 protruding from the partition plate 11 into the first cavity connects the first cavity and the second cavity. The boss 12 is passed through the hole 130 of the first wiring board 13, and the blue lamp 15 is located in the boss 12 with a part thereof protruding from the opening of the boss. Second housing 2
0 is attached to the first housing 10 and confines the second wiring board 17.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lighting unit which is mounted on a plate and constitutes a dot matrix display device, and in particular, includes a first blue lamp and a plurality of second red and green lamps located around the blue lamp. Regarding the lighting unit.

[0002]

[Prior art]

 Dot matrix display devices using red, green and blue light emitting diodes are becoming increasingly popular in the advertising field. Blue light emitting diodes have low luminous efficiency and are expensive and difficult to manufacture. Dot matrix displays are limited to indoor use due to insufficient brightness for outdoor use. In addition, the light emitting diode type dot matrix display device, when commercialized, uses only red and green light emitting diodes for economic reasons and is not capable of producing all kinds of colors. could not.

In order to reduce the drawbacks of light emitting diodes, cathode ray bulbs (Light bulbs) have been used for outdoor advertising, but cathode ray bulbs generate considerable heat and cause dissipation. And affect its lifespan.

[0004]

[Problems to be solved by the device]

 The present applicant previously applied for Japanese Patent Application No. 4-83842 as a dot matrix display device of this type. In this application, as shown in FIG. 4, a housing provided with a front panel 81 and a rear plate 82, a first wiring board 96, and a second wiring board provided between the front panel 81 and the rear plate 82. 97, a dot matrix display device including a plurality of lighting units mounted on the first wiring board 96 and the second wiring board 97 and arranged in a dot matrix form is disclosed. Further, FIGS. As shown, each lighting unit 9 has a substrate 91, a cathode-ray-type blue bulb 94 mounted in the central hole 92 of the substrate 91, and a large number of red and green light-emitting diodes mounted around the blue bulb 94. The light emitting diode 93 is electrically connected to the first wiring board 96 by the pin 95 on the board 91, and the blue bulb 94 is a board. Ri through the hole 220 of the first substrate 96 extend from 1, and is electrically connected to the second wiring board 97.

The device described above has several drawbacks. First, there is no uniform color combination depending on the angle. This means that blue light can only be seen up to 75 ° with respect to its longitudinal centerline from a cathode ray type bulb, and the light from the emitting diode can be either red or green, as shown in FIG. This is because you can only see the range up to °.

For the above reasons, the light combination is not uniform within the range of 30 ° to 75 ° called the non-uniform range. So people in the non-uniform range can only see blue light. Second, the blue light 94 is firmly fixed to the first wiring board 96 and the second wiring board 97, and it is structurally troublesome to replace the defective blue light 94. Unfortunately, blue lights only last for a few years.

Thirdly, since the housing 90 of the display device is usually installed outdoors, it is apt to be exposed to rainwater, which causes the lighting unit to get wet and the valve therein to fail. There is an unfulfilled need for dot matrix display devices that can alleviate or eliminate the above mentioned problems.

An object of the present invention is to provide a dot matrix display device which can obtain a uniform color light combination effect. Another object of the present invention is to provide a lighting unit that is resistant to rain and moisture.

[0009]

[Means for solving the problem]

 According to one aspect of the present invention, a plurality of lighting units are provided in the dot matrix display device, and each lighting unit has a disk-shaped first wiring board having one hole and a plurality of lighting units around the holes. It consists of a number of green and red lights installed. The second wiring board is disk-shaped and has a blue lamp attached. The first housing has a partition plate on its inner periphery that separates the first housing into first and second cavities. The first wiring board is provided in the first cavity, while the second wiring board is provided in the second cavity. A boss projects from the partition plate into the first cavity and connects the first cavity and the second cavity.

The first wiring board is located at a predetermined position and surrounds the boss with the peripheral edge of the hole. The blue light is located inside the boss, and part of it protrudes beyond the opening of the boss. A second housing is attached to the first housing and encloses the second wiring board. Other advantages and novel features of the present invention will be apparent from the following detailed description and the accompanying drawings.

[0011]

【Example】

 1 and 2, the lighting unit 1 according to the present invention comprises a first housing 10 and a second housing 20. The first and second housings 10 and 20 are substantially cylindrical tube portions, and the first housing 10 has a partition plate 11 formed near one end thereof, so that it is relatively large on both sides thereof. Form a cavity that is relatively small with the cavity. An annular protrusion 18 extends from one side of the partition plate 11 to separate the relatively small cavity into an inner first recess and an outer second recess. That is, the second recess is defined between the annular protrusion 18 and the edge of the first housing 10.

The boss 12 projects from one side of the partition plate 11 into a relatively large cavity. The protrusion 101 extends from one end of the first housing 10 so as not to scatter light emitted from a relatively large cavity. The first wiring board 13 has holes 130 for receiving the bosses 12 at appropriate positions, and a large number of light emitting diodes 14 including red and green light emitting diodes are provided on the first wiring board 13 around the holes 130. And a large number of conductive pins 13 project from the first wiring board 13. A cathode ray type blue bulb 15 is inserted into the boss 12, the bulb 15 having a body portion 152 and a neck 150 projecting therefrom, forming a shoulder therebetween. Also protruding from the body portion 152 are two pins 151, substantially parallel to the neck 150.

A ring-shaped seal 16 surrounds the body portion 152 of the cathode ray type bulb 15 and is securely mounted within the boss 12 to prevent water from entering the boss 12. The second wiring board 17 is provided in the first recess of the first housing 10 and has a hole 170 for receiving the neck portion 150 of the valve 15. The shoulder of the valve 15 hits the second wiring board 17 when the neck 150 of the valve 15 is inserted into the hole 170 of the second wiring board 17. The partition plate 11 and the second wiring board 17 each have a small hole (not shown) through which the electrically conductive pin 13 protruding from the first wiring board 13 and electrically coupled to the second wiring board 17 is inserted. )have.

The second housing 20 has two bosses 21 formed at diametrically opposed positions on the periphery, and each boss 21 has a hole. Two screw holes 110 are formed in the partition plate 11 corresponding to the bosses 21, respectively, and two holes 172 are formed in the peripheral edge of the second wiring board 17 corresponding to the bosses 21. Two screws 22 connect the first and second housings 10 and 20, and are respectively screwed into the two screw holes 110 through the two bosses 21 and the holes 172.

Although the first and second housings 10 and 20 are connected by two screws 22, water may enter between the housings. Then, a ring-shaped seal 180 is mounted in the second recess of the first housing 10 so that water does not enter between the first and second housings 10 and 20. The second housing 20 has an annular groove 23 (see FIG. 3) on the outer bottom surface for receiving a ring-shaped seal 24.

Also in FIG. 3, waterproof sealing materials 102 are applied to both surfaces of the first wiring board 13, respectively. It can be seen that the heads of the light emitting diodes 14 are both in an imaginary plane that traverses the opening edge of the first housing 10. On the other hand, the blue valve 15 is recessed inside the first housing 10. In other words, the head of the light emitting diode 14 is at a relatively front physical level, and the head of the cathode ray bulb 15 is at a relatively rear physical level. This structure does not produce unwanted blue light. This is because the visible angle of the cathode ray bulb 15 is limited to the inside of the first housing 10.

A screw hole 25 and a protrusion 26 are formed on the bottom of the second housing 20. A bundle of cables 171 extends from one side of the second wiring board 17, and a hole 27 for passing the cables 171 is formed in the bottom of the second housing 20. The rear plate 30 is used to fix the lighting unit 1, and has a large number of attachment points for fixing the lighting unit 1.

Corresponding to the bottom structure of the second housing 20, each attachment point corresponds to a recess 32 for receiving the projection 26 and a screw hole 25 of the second housing 20, and the rear plate. A hole 31 into which a screw 34 for fixing the lighting unit 1 is engaged, and a hole 33 corresponding to the hole 27 and through which a cable 171 connected to a power source (not shown) is inserted. .

The ring-shaped seal 24 can prevent water from entering between the bottom of the second housing and the rear plate 30. Since the dot matrix display device is usually mounted on a building or other relatively high place, the bottom of the second housing 20 is inclined, and the light emitted from the lighting unit 1 is cast on the ground at an appropriate angle.

The protrusion 101 of the lighting unit 1 can block sunlight that reduces the visibility of light from the lighting unit 1. While the present invention has been described in terms of its preferred embodiment, many other possible changes and modifications can be made without departing from the spirit and scope of the invention as set forth in the claims for utility model. To be understood.

[Brief description of drawings]

FIG. 1 is a perspective view of a lighting unit according to the present invention.

FIG. 2 is an exploded perspective view of the lighting unit shown in FIG.

FIG. 3 is a sectional view of the lighting unit shown in FIG.

FIG. 4 is a schematic diagram of a dot matrix display device including a conventional lighting unit.

FIG. 5 is a sectional view of a conventional lighting unit.

FIG. 6 is a view showing a visible angle between a cathode ray bulb and a light emitting diode.

[Explanation of symbols]

1 ... Lighting unit 10 ...
First housing 11 ... Partition plate 12 ...
Boss 13 ... First wiring board 14 ...
Light-emitting diode 15 ... Bulb 16 ...
Seal 17 ... Second wiring board 18 ...
Protrusion 20 ... Second housing 21 ...
Boss 22 ... Screw 23 ...
Annular groove 24 ... Seal 101 ...
・ Protruding part 102 ・ ・ ・ Sealing material 110 ・ ・
・ Screw hole 130 ・ ・ ・ hole 131 ・ ・
・ Pin 150 ・ ・ ・ Neck 151 ・ ・
・ Pin 152 ・ ・ ・ Body part 170 ・ ・
・ Hole 171 ・ ・ ・ Cable 172 ・ ・
・ Hole 180 ・ ・ ・ Seal

Claims (5)

[Scope of utility model registration request] 1. A disk-shaped first wiring board having one hole and a large number of green and red lights mounted around the hole, and a disk-shaped second wiring board to which a blue light is mounted. A first partition means having a first housing means, the first housing means being coupled to an inner circumference of the partition wall for separating the first housing means into a first cavity and a second cavity; A boss projecting into the cavity of the first wiring board, connecting the first and second cavities to each other, and passing through a hole of the first wiring board located at a predetermined position,
It consists of an annular protrusion extending from the partition plate and dividing the second cavity into an inner first recess and an outer second recess, and a blue lamp partially covers the boss. The second wiring substrate is located in the first recess, and the second wiring substrate is located in the first recess. The ring-shaped seal is received in the second recess. A lighting unit having a second housing means securely attached to one housing means for enclosing the second wiring board. 2. The second housing means has two second bosses on its inner circumference, each of which has a hole facing and penetrating each other, and the first housing means is provided on the second boss. Correspondingly, there are two screw holes formed in the partition plate, and two screws are screwed into the corresponding holes, respectively, whereby the first housing means is firmly attached to the second housing means. The lighting unit according to claim 1. 3. The lighting unit according to claim 1, wherein the first housing means has a protrusion protruding from one end thereof so as not to scatter the light generated therefrom. 4. The lighting unit according to claim 1, wherein the green light and the red light are light emitting diodes. 5. The lighting unit according to claim 1, wherein the blue lamp is a cathode ray type bulb.