JPH0750434A - Led aggregate lamp - Google Patents

Abstract

PURPOSE:To adjust an overhag part to the optimum position according to the mounting place of a lamp and to make it possible to fulfill always the superior light-shielding function of the lamp even if to which direction the optical axes of LEDs are slanted. CONSTITUTION:A printed board 4 with a multitude of elliptical wide-angle LEDs 3 arranged in housed in a cylindrical casing 2. The mounting surface 5 for modifying the direction of irradiation from the wide-angle LEDs 3 is formed on the base end of the casing 2. A ring member 11 molded as a member different from the casing is fitted in the point of the casing 2. An overhang part 12 to project to the outside of the casing 2 and an anchor part 13 to project to the inside of the casing 2 are formed integrally with the member 11. The member 11 is rotated to adjust the position of the overhang part 12 to that of the mounting surface 5, the gaps between the LEDs 3 are filled with an insulating sealer 14 in such a way that the part 13 is buries in the sealer 14 and board 4 and the member 11 are mounted integrally with the casing 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp constituting a large-sized display device such as an electronic display board, and more specifically, a printed circuit board having a large number of LEDs arranged therein is housed in a cylindrical casing, and the LED is provided at the base end of the casing. The present invention relates to an LED collective lamp in which an inclined mounting surface for changing the irradiation direction of is formed.

[0002]

2. Description of the Related Art As an LED collective lamp of this type, conventionally, the technologies shown in FIGS. 7 and 8 are known. A conventional collective lamp 31 includes a casing 32 formed of a synthetic resin material in a cylindrical shape with a bottom, and a printed circuit board 34 in which a large number of LEDs 33 are arranged is accommodated inside the casing 32. An inclined mounting surface 35 for changing the irradiation direction of the LED 33 is formed at the base end of the casing 32, and an eaves portion 36 for blocking light from the outside is integrally provided at the tip end so as to project. Then, a bolt (not shown) is fastened to the nut 37 embedded in the inclined mounting surface 35, and the optical axis of the LED 33 is tilted in any direction according to the mounting position of the collective lamp 31,
The casing 32 is attached to the mounting plate 38, and a large number of collective lamps 31 are arranged in parallel on the mounting plate 38 so that an electronic display board or the like can be configured.

[0003]

However, according to the conventional collective lamp 31, the eaves portion 36 is formed integrally with the casing 32, so that the optical axis of the LED 33 is changed to, for example, FIGS. 8 (b) and 8 (c). When tilted in the direction shown, there is a problem that the eaves 36 as well as the casing 32 are laid sideways, and the light-shielding function thereof is significantly reduced.

Therefore, an object of the present invention is to provide an LED collective lamp in which the eaves portion can be adjusted to an optimum position according to the mounting location of the lamp and which can always exhibit an excellent light-shielding function regardless of the direction of the optical axis of the LED. To provide.

[0005]

In order to solve the above problems, the LED collective lamp of the present invention accommodates a printed circuit board in which a large number of LEDs are arranged in a cylindrical casing, and the LED is mounted at the base end of the casing. An inclined mounting surface for changing the irradiation direction is formed, and a ring member molded separately from the casing is fitted to the tip of the casing. The ring member protrudes to the outside of the casing and the protrusion to the inside of the casing. The anchor part is integrally formed, the ring member is rotated to adjust the position of the eaves part with respect to the inclined mounting surface, the gap between the LEDs is filled with an insulating sealer so that the anchor part is filled, and the printed circuit board and the ring member. Is integrally assembled with the casing.

[0006]

In the collective lamp of the present invention, during manufacture, the ring member is rotated to adjust the position of the eaves,
The insulating sealer is filled to embed the LED and the anchor part. In this way, the eaves can be adjusted to the optimum position according to the mounting location of the lamp, and the printed board and the ring member can be easily and firmly assembled to the casing using the insulating sealer.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the collective lamp 1 of the present embodiment includes a casing 2 formed of a weather-resistant synthetic resin material such as polycarbonate in a bottomed cylindrical shape, and an elliptical wide-angle LED 3 is provided inside the casing 2. A large number of printed circuit boards 4 are housed. An inclined mounting surface 5 for changing the irradiation direction of the wide-angle LED 3 is formed at the base end of the casing 2.

The inclined mounting surface 5 is provided with a protrusion 8 positioned in the hole 7 of the mounting plate 6, a nut 9 into which a mounting bolt (not shown) is screwed, and a rubber packing 10. The casing 2 is mounted on the mounting plate 6 with the optical axis of the wide-angle LED 3 tilted in an arbitrary direction according to the mounting position of the collective lamp 1.
A plurality of collective lamps 1 are mounted side by side on a mounting plate 6 so that an electronic display board or the like can be constructed.

A ring member 11 molded separately from the same synthetic resin material as the casing 2 is fitted to the tip of the casing 2. As shown in FIGS. 5 and 6, the ring member 11 is integrally formed with an eaves portion 12 for blocking light from the outside in a range of about 180 ° so as to project to the outside of the casing 2 and has a T-shape. The four anchor portions 13 are integrally formed so as to project inward of the casing 2.

When manufacturing the collective lamp 1,
As shown in FIGS. 2 and 3, in consideration of the mounting location of the lamp 1, the printed circuit board 4 is housed inside the casing 2 at an angle with the major axis of the wide-angle LED 3 horizontal, and a ring is attached to the tip of the casing 2. The position of the eaves portion 12 with respect to the inclined mounting surface 5 is adjusted by fitting the member 11 and rotating the ring member 11. Then, as shown in FIG. 4, the wide-angle LED 3 is filled so that most of the anchor portion 13 is filled.
An insulating sealer 14 made of silicon or the like is filled in the gap of 1. Thus, the collective lamp 1 is configured by integrally assembling the printed board 4 and the ring member 11 into the casing 2.

According to the collective lamp 1 of the present embodiment configured as described above, since the ring member 11 is formed separately from the casing 2, the eaves portion is rotated by rotating the ring member 11. 12 can be adjusted to the optimum position according to the mounting location of the collective lamp 1. Therefore, no matter which direction the optical axis of the wide-angle LED 3 is tilted, an excellent light-shielding function can always be exerted. In particular, the elliptical wide-angle LED 3 is more susceptible to the disturbance light than the perfect circular LED 33 (see FIG. 8), but according to the collective lamp 1 of the present embodiment, the disturbance light from any direction is shielded. Since it is reliably shielded by the portion 12, the excellent light emitting performance peculiar to the wide-angle LED 3 can be fully exhibited.

Since the anchor portion 13 of the ring member 11 is embedded with the insulating sealer 14,
By using the insulating sealer 14 for sealing, the printed board 4 and the ring member 11 can be firmly assembled to the casing 2 at the same time in the filling process, so that assembly parts such as screws can be omitted and the manufacturing process can be performed. There is also an advantage that it can be simplified.

The present invention is not limited to the above embodiment, and may be, for example, the casing 2 or the ring member 1.
The shape and configuration of each part may be arbitrarily changed and embodied, for example, by appropriately changing the shape of No. 1 or by applying it to a collective lamp in which true-circular LEDs are arranged. It is possible.

[0014]

As described above in detail, according to the present invention, the eaves portion and the anchor portion are integrally formed on the ring member formed separately from the casing, and the L portion is embedded so that the anchor portion is buried.
Since the printed circuit board and the ring member are integrally assembled to the casing by filling the gap between the EDs with the insulating sealer, the eaves portion is adjusted to the optimum position according to the mounting location of the collective lamp, and the optical axis of the LED is It has an excellent effect that it can always exhibit an excellent light-shielding function regardless of which direction it is tilted, and that each component can be easily and firmly assembled by using the insulating sealer.

[Brief description of drawings]

FIG. 1 is a sectional view of an LED collective lamp showing an embodiment of the present invention.

2 is a front view of the LED collective lamp of FIG. 1. FIG.

FIG. 3 is a front view of an LED collective lamp showing a mounting form different from that of FIG.

FIG. 4 is a partial cross-sectional view taken along the line AA of FIG.

5 is a cross-sectional view showing a ring member of the LED collective lamp of FIG.

6 is a front view of the ring member of FIG.

FIG. 7 is a cross-sectional view showing a conventional LED collective lamp.

8 is a front view showing a problem of the LED collective lamp of FIG. 7. FIG.

[Explanation of symbols]

1 ... Collective lamp 2. Casing 3. Wide-angle LE
D, 4 ... Printed circuit board, 5 ... Inclined mounting surface, 11 ...
Ring member, 12 ... eaves part, 13 ... anchor part, 14
..Insulating sealers

Claims (1)

[Claims] 1. A printed circuit board having a large number of LEDs arranged therein is housed in a cylindrical casing, and the LED is provided at the base end of the casing.
Form an inclined mounting surface to change the irradiation direction of, and fit a ring member molded separately from it to the tip of the casing,
The ring member has an eaves portion protruding to the outside of the casing,
An anchor portion protruding inward of the casing is integrally formed, the ring member is rotated to adjust the position of the eaves portion with respect to the inclined mounting surface, and the gap between the LEDs is filled with an insulating sealer so that the anchor portion is filled, An LED collective lamp comprising a printed circuit board and a ring member integrally assembled in a casing.